PPE / IPEFINAL COACHING

A vertical turbine pump with the jump and motor closed coupled and design to be installed underground, as in the case of a deepwell pump.

C. Submersible pump

A. Horizontal split case pumpB. Booster pump

D. Vertical shaft turbines pump

An underground formation that contains sufficient saturated permeable material to yield significant quantities of water.A. Aquifer

C. Wet pitB. Ground water

D. Well water

A timber, concrete or masonry enclosure having a screened inlet kept partially filled with water by an open body of water such as pond, lake, or steams.

C. Wet pit

A. Aquifer B. Ground water

D. Well water

Water which is available from well, driven into water bearing subsurface strata (aquifer)

B. Ground waterC. Wet pit

A. Aquifer

D. Well water

Imparts velocity to the liquid, resulting from centrifugal force as the impeller is rotated.A. Impeller

C. CasingB. Stuffing box

D. Shaft sleeve

A means of throttling the leakage which would otherwise occur at the point of entry of the shaft into the casing.A. Impeller

C. CasingB. Stuffing box

D. Shaft sleeve

Protect the shaft where it passes through the stuffing box.A. Impeller

C. CasingB. Stuffing box

D. Shaft sleeve

The ratio of the actual vapor density to the vapor density at saturation

D. Saturation ratio

B. Absolute humidityC. Humidity ratio

A. Relative humidity

An expression of the mass of water vapor per unit mass of dry air

D. Saturation ratio

B. Absolute humidityA. Relative humidity

C. Humidity ratio

Which of the following is equivalent to 1lb?

D. 8000 grains

B. 6000 grainsA. 5000 grains

C. 7000 grains

The bypass factor for large commercial units

D. Around 50%

B. Around 30%A. Around 20%

C. Around 10%

Sometimes called specific humidity

D. Saturation ratio

B. Absolute humidityA. Relative humidity

C. Humidity ratio

For any given barometric pressure, the humidity ratio is a function of the

C. Dry bulb temperature

A. Critical temperature

D. Wet bulb temperature

B. Dew point temperature

The humidity ratio corresponding to any given dew point temperature varies with the total barometric pressure, increasing as the barometric pressureA. Increases

D. ConstantC. VariesB. Decreases

A closed channel excavated through an obstructiuon such as a ridge of higher land between the dam and the powerhouse is calledA. CanalB. HeadraceC. PenstockD. Tunnel

The small reservoir in which the water level rises or falls to reduce the pressure swings so that they are not transmitted to the closed conduit is calledA. PenstockB. Power reservoirC. Pressure tankD. Tunnel

A structure used to relieve the reservoir of excess water

B. Diversion channelC. Butress damD. Arch dam

A. Spillway

The fluid pressure difference created by column of heated gas, as by chimney is called

B. Forced draftC. Induce draftD. Required draft

A. Natural draft

The pressure rise from greater to a lesser vacuum, created in a gas loop between stream generator outlet and chimney by means of a fan is calledA. Forced draft

D. Balanced draftC. Required draftB. Induced draft

Also known as Francis turbines or radial flow turbinesA. Impulse turbines

D. Axial flow turbines

B. Tangential turbinesC. Reaction turbines

The turbine, draft tube and all related parts comprise what is known asA. Powerhouse

D. Surge chamber

B. ForbayC. Setting

When a forbay is not part of the generating plant’s design, it will be desirable to provide a _________ in order to relieve the effects of rapid changes in flowrate.A. Forbay

D. Penstock

B. Draft tubeC. Surge chamber

To keep the deflected jet out of the way of the incoming jet, the actual angle is limited to approximatelyA. 90 deg.

D. 175 deg.

B. 135 deg.C. 165 deg.

The minimum fluid energy required at the pump inlet for satisfactory operation is known as

C. Velocity headD. Friction head

B. NPSHA.A. NPSHR

Throttling the input line to a pump and venting or evacuating the receiving tank

C. Both eliminate cavitationD. Both drive cavitation

B. Both decrease cavitationA. Both increase cavitation

Traditional reciprocating pumps with pistons and rods can be either single-acting or double acting and are suitable up to approximately

C. 8000 psiD. 10,000 psi

B. 4000 psiA. 2000 psi

In a sensible heating process the final humidity ratio is: A. Increased

D. Cannot be determined

B. DecreasedC. The same

Cooling and dehumidifying process is commonly used for:

C. Winter coolingD. Heat pumping

B. Ice makingA. Summer air conditioning

An adiabatic saturation process is also known as:

C. Constant DP temperature processD. Constant vapor temperature process

B. Constant DB temperature processA. Constant WB temperature process

The process of simultaneous heating and dehumidifying is known as:

B. Cooling and dehumidifyingC. Sensible cooling

A. Sensible heating

D. Chemical dehumidifying

The process in increasing the dry-bulb temperature without changing the humidity ratio is known as:

B. Cooling and dehumidifyingC. Sensible coolingD. Heating and dehumidifying

A. Sensible heating

The process of simultaneous cooling and decreasing of humidity ratio is known as:A. Sensible coolingB. Cooling and humidifying

D. Heating and dehumidifyingC. Cooling and dehumidifying

The process of cooling without changing the humidity ratio is known as:A. Sensible coolingB. Cooling and dehumidifying

D. Heating and humidifyingC. Sensible cooling

The process of simultaneous heating and humidifying ratio is known as:A. Sensible coolingB. Cooling and humidifying

D. Heating and dehumidifyingC. Heating and humidifying

Which of the following cycle is bulky and involves toxic fluids hence it is unsuitable for home and autocoolingA. Carnot refrigeration cycle

C. Vapor and compression cycleD. Air refrigeration cycle

B. Absorption cycle

Which of the following refrigeration cycle is practical when large quantities of waste or inexpensive heat energy are available?

D. Air refrigeration cycle

B. Absorption cycleC. Vapor compression cycle

A. Heat driven refrigeration cycle

A product of computer-aided manufacturing and precision machining were introduce commercially in the late 1980’s as replacements for reciprocating compressors in small residential air conditioners

B. Centrifugal compressorsC. Rotary compressors

A. Reciprocating compressors

D. Scroll compressors

Condensers used in small and medium sized up to approximately 100 tons refrigerators.

D. Low side condensers

B. Water cooled condensersC. High side condensers

A. Air-cooled condensers

For efficient operation, the condensing temperature should not be lower than

D. 20 C

B. 17 CC. 10 C

A. 5 C

For efficient operation, the condensing temperature should not be more than

D. 20 C

B. 17 CC. 10 C

A. 5 C

An evaporator in a refrigeration unit makes use of which heat transfer modes?

B. Convection

D. All of the aboveC. Radiation

A. Conduction

An evaporator in a refrigeration unit makes use of which heat transfer modes?

B. Convection

D. All of the aboveC. Radiation

A. Conduction

Energy added to a vapor is known as a latent heat of vaporization

B. Sensible heat of vaporC. SuperheatD. B and C

A. Latent heat of vaporization

The vaporization process that occurs at temperature below the triple point of a substance is called.

B. BoilingC. SublimationD. Condensation

A. Evaporation

As the pressure increases, the amount of work it can do increases and its enthalpy

B. Remained the sameA. Increases

D. Pressure and enthalpy has no relation at allC. Decreases

During the compression process, the internal energy of the refrigerant vapor

B. DecreasesA. Increases

D. Internal energy has no relation to the compression process

C. Remain the same

The measure of the amount of thermal energy transfer occurring within the evaporator per unit mass under stated conditions.A. Refrigeration capacity

C. Refrigeration effectD. Heat absorptivity

B. Heat capacity

The peak power that can be produced on an occasional basisA. BrakepowerB. Intermittent rating

D. Power ratingC. Continous duty rating

A value of a property that includes the effect of friction is known as:

B. Indicated valueA. Brake value

D. Actual valueC. Friction value

Forced draft fans are run at relatively high speeds in the range of

B. 1500 to 2000 rpmA. 1200 to 1800 rpm

D. 900 to 1500 rpmC. 1000 to 1600 rpm

Chimneys that rely on natural draft are sometimes referred to as

B. Normal chimneyC. Gravity chimneyD. Stack

A. Natural chimney

For realistic problems, the achievable stack effect probably should be considered to be

B. Equal to the idealC. 80 % of the idealD. Half the ideal

A. 75% of the ideal

In a balanced system, the available draft is

B. 100C. ZeroD. Infinite

A. Unity

It is a device used for atomizing or cracking fuel oil and through which the fuel oil is injected into the working cylinders of Diesel engines

B. InjectorA. Atomizer

D. CrackerC. Fuel spray nozzle

The device that transfer thermal energy from one fluid to another

B. Feedwater

D. Heat exchangerC. Evaporator

A. Condenser

Undergrounds system of hot water and / or steam

C. Hot water resource

A. Hydrothermal resource

D. High pressure water system

B. Geothermal resource

The process of returning spent geothermal fluids to the subsurface Is called

C. Rejection

A. Injection

D. Exhaustion

B. Returning

The simultaneous demand of all customers required at any specified point in an electric power system is called

C. Power demand A. Load

A. DemandB. Electrical demand

The electricity generating plants that are operated to meet the peak or maximum load on the system are called

C. High demanding plants

A. Peaking plants

D. Add-on plants

B. High-load plants

The capacity of a substance to transmit a fluid is called

C. PorosityB. Permeability

D. Smoothness

A. Fluidity

The ratio of the aggregate volume pore spaces in rock or soil to its total volume is called

B. SphericityA. Porosity

C. PermeabilityD. Salinity

Cooling efficiency is typically

C. 80 to 85%B. 50 to 70%

D. 90 to 95%

A. 75 to 80%

Forced draft towers can cool the water to within

C. 20 to 24 FB. 5 to 6 F

D. 2.5 to 3 F

A. 10 to12 F

The higher the wet bulb temperatures

C. The efficiency is limitedB. The lower the efficiency

D. The efficiency is maximum

A. The higher the efficiency

Define the relative difficulty in cooling, essentially the relative amount of contact area or fill volume requiredA. Heat load

D. Rating factor

B. Tower loadC. Cooling duty

Evaporation loss can be calculated from the humidity ratio increase and is approximately _________ decrease in water temperature

D. 0.30% per C

A. 0.18% per CB. 0.25% per CC. 0.10% per C

Water lost in small droplet and carried away by the air flowA. Range

C. DriftB. Approach

D. Bleed-off

The ratio of total dissolved solids in the recirculating water to the total dissolved solids in the make-up water.

C. Coil efficiency

A. Ratio of concentrationB. Cooling efficiency

D. Bypass factor

A dry-cooling tower where steam travels through large diameter “trunks” to a cross-flow heat exchanger where it is condensed and cooled by the cooler air

C. Evaporative cooling tower

A. Direct condensing towerB. Indirect condensing dry cooling tower

D. Atmospheric cooling tower

The minimum fluid energy required at the pump inlet for satisfactory operation is known as

C. Velocity head

A. NPSHRB. NPSHA

D. Friction head

The actual fluid energy at the inlet

C. Velocity headB. NPSHRA. NPSHA

D. Friction head

Throttling the input line to a pump and venting or evacuating the receiver tank

C. Both eliminate cavitation

A. Both increase cavitationB. Both decrease cavitation

D. Both drive cavitation

Traditional reciprocating pumps with pistons and rods can be either single-acting or double acting and are suitable up to approximately

C. 8000 psi

A. 2000 psiB. 4000 psi

D. 10,000 psi

Plunger pumps are only single-acting and are suitable up to approximately

C. 8000 psiD. 10,000 psi

B. 4000 psiA. 2000 psi

The ratio of the actual to the ideal heat transfer coefficient.

D. Biot numberC. Cleanliness factorB. Sensible heat ratioA. Fouling factor

The ratio of the maximum to minimum mass steam flow rates at which the temperature can be accurately contained by the desuperheater.

D. Fouling factorC. Turndown ratioB. Capacity factorA. Cleanliness factor

With a reversible regenerator, the thermal efficiency of the Ericsson cycle is ______ to that of the Carnot cyle

C. ProportionalD. Equal

B. Greater thanA. Less than

The electro magnetic radiation emitted from the daughter nucleus when an alpha particles leaves the patent atom

D. K-captureC. Gamma rayB. PositionA. Neutron

Which of the following statement is a scheme for energy storage?

C. Thermal energy storageD. All of the above

B. Magnetic energy storageA. Pumped hydro

A reactor that employs fast or high energy neutrons and contains no moderator is called

C. High speed reactorB. Fast reactor

D. Turbo reactor

A. High energy reactor

A reactor that utilizes slow moving neutronsA. Slow reactor

C. Thermal reactorD. Slow speed reactor

B. Intermediate reactor

The water bearing stratum of permeable san, rock, or gravel is calledA. Reservoir

C. AquiferD. Well

B. Water source

The electricity generating units that are operated to meet the constant or minimum load on the system is calledA. Constant load plantsB. Baseload plants

D. Steady load plantsC. Invariable load plants

The effectiveness of a body as a thermal radiator at a given temperature.A. Absorptivity

C. EmissivityD. Reflectivity

B. Conductivity

What are the main components in a combined cycle power plant?A. Diesel engine and air compressor

C. Gas engine and waste heat boilerD. Nuclear reactor and steam boiler

B. Steam boiler and turbine

The size of a steam reciprocating pumps is generally designed by a three-digits number size as 646. The first digit designates

D. Number of cylinder

B. Inside diameter of the steam cylinder measured in inchesC. Percent clearance

A. Stroke of the pump in inches

The power required to deliver a given quantity of fluid against a given head with no losses in the pump is calledA. Wheel power

C. Hydraulic powerD. Indicated power

B. Brake power

Fluid that are pumped in processing work are frequently more viscous than water. Which of the following statement is correct?A. Reynolds number varies directly as the viscosity

C. Increased fluid friction between the pump parts and the passing fluid increases useful workD. Working head increases as the viscosity

B. Efficiency of a pump increases as the viscosity increases

The law that states “Entropy of all perfect crystalline solids is zero at absolute zero temperature”A. Zeroth law of thermodynamic

D. Third law of thermodynamicsC. Second law of thermodynamicsB. First law of thermodynamics

An expression of the mass of water vapor per unit mass of dry airA. Relative humidity

C. Humidity ratioD. Saturation ratio

B. Absolute humidity

Which of the following is equivalent to 1 lb?

A. 5000 grains

C. 7000 grainsD. 8000 grains

B. 6000 grains

The locus of states that the same value of stagnation enthalpy and mass flux is called.

C. Willian’s line

A. Fanno line

D. Mollier’s line

B. Rayleigh line

Combining the conservation of mass and momentum equations into a single equation and plotting it on the h-s diagram yield a curve called

C. Willian’s lineB. Rayleigh line

D. Mollier’s line

A. Fanno line

Across the shock, the stagnation temperature of an ideal gas

B. DecreasesC. Remains constantD. Proportional

A. Increases

Which of the following types of air dryers works by absorbing moisture on a solid dessicant or drying material such as activated alumina, silicon gel or molecular sieve?

B. Spray dryerC. Deliquescent dryerD. Refrigerated dryer

A. Regenerative dryer

When two bodies, isolated from other environment, are in thermal equilibrium with a third body, the two are in thermal equilibrium with each other.

B. First law of thermodynamicsrA. Zeroth law of thermodynamic

D. Third law of thermodynamicsC. Second law of thermodynamics

The sum of the energies of all the molecules in a system where energies appear in several complex forms is theA. Kinetic energyB. Internal energy

D. Friction energyC. Potential energy

The Carnot refrigeration cycle includes all of the following process exceptA. Isentropic expansionB. Isenthalpic expansion

D. Isentropic compressionC. Isothermal expansion

The maximum possible work that can be obtained a cycle operating between two reservoirs is found fromA. Process irreversibilityB. Carnot efficiency

D. Reversible workC. Availability

The following factors are necessary to define a thermodynamic cycle expectA. The working substance

C. The time it takes to complete the cycleD. The means of doing work on the system

B. High and low temperature reservoirs

A temperature above which a given gas cannot be liquefiedA. Cryogenic temperature

D. Critical temperatureC. Vaporization temperatureB. Absolute temperature

The geometrical electricity generating plants that employs a closed-loop heat exchange system in which the heat of the primary fluid is transferred to a secondary fluid, which is thereby vaporized and used to drive a turbine generator set

D. Cascade cycle

A. Binary cycle plant

C. Double cycle plantB. Dual cycle plant

The geothermal solution which contains appreciable amounts of sodium chloride or other salts is calledA. Sulfur dioxide

D. BrineC. Sea waterB. Potassium silicate

The quantity of heat required to raise the temperature of one pound of water one degree Fahrenheit at standard conditions.

D. Centigrade

A. Btu

C. JouleB. Calorie

The process that uses a stream of geothermal of hot water or stream to perform successive task requiring temp is called

D. Negative gradient processC. Cascading heat

A. Diminishing heatB. Decreasing heat

The water formed by condensation of steam is called

D. Condenser

B. CondensateA. Distilled water

C. Dew

A structure that removes heat from condensate is called

D. Condenser

B. Cooling towerA. Desuperheater

C. Evaporator

In a typical hydroelectric generating plant using reaction turbines, the turbine is generally housed in a

D. Setting

A. PowerhouseB. PenstockC. Forbay

After the water passes through the turbine, it is discharges through the draft tube to the receiving reservoir known as the

D. Setting

B. TailwaterA. Tail race

C. Draft tube

If a draft tube is not employed, water maybe returned to the tailwater by way of a channel is known as the

D. Setting

A. tail raceB. tailwaterC. Draft tube

The turbine, draft tube and all related parts comprise what is known as

D. Surge chamberC. SettingB. ForbayA. Powerhouse

When a forbay is not part of the generating plant’s design, it will be desirable to provide a ________ in order to relieve the effects of rapid changes in flowrate.

D. PenstockC. Surge chamberB. Draft tubeA. Forbay

To keep the deflected jet out of the way of the incoming jet, the actual angle is limited to approximately

D. 175deg.C. 165 deg.B. 135 deg.A. 90 deg.

The spontaneous vaporization of the fluid, resulting in a degradation of pump performance

D. Net head

A. CavitationB. Vapor lockC. Available head

A dry cooling tower where steam is condensed by cold water jets (surface or jet condenser)

D. Atmospheric cooling tower

B. Indirect condensing dry cooling towerA. Direct condensing tower

C. Evaporative cooling tower

If the heat is being removed from water, the device is known as

D. Air cooler

A. Chiller B. CoolerC. Air conditioner

Which of the following is the refrigerant “of choice” in uniting air conditioners?

D. R-502

A. R-22B. R-123C. R-11

In new equipment, which of the following replace R-11?

D. R-22

B. R-123A. R-12

C. R-502

The mass flow rate produces by the compressor is

D. Greater that the mass of the suction vapor that the compressor takes in at the suction inlet per unit time

B. Equal to the mass of the suction vapor that the compressor takes in at the suction inlet per unit time

A. Proportional to the mass of the suction vapor that the compressor takes in at the suction inlet per unit time

C. Less than the mass of the suction vapor that the compressor takes in at the suction inlet per unit time

A boiler operated at pressure not exceeding 1.055kg/cm2 gage steam, or water temperature no exceeding 121˚C.

D. Power boiler

A. Low pressure heating boilerB. Hot water supply boilerC. Miniature

The very hot steam that doesn’t occur with a liquidA. Pure steam

D. Dry steam

B. Saturated vaporC. Critical steam

The steam produced when the pressure on a geothermal liquid is reducedA. Low pressure steam

D. Flashed steam

B. High quality steamC. Sub pressure steam

The vent or hole in the Earth surface, usually in a volcanic region, from which, gaseous vapors, or hot gasses issue.

D. Hot spring

A. FumarolesB. CraterC. Hot spot

The earth interior heat made available to man by extracting it from hot water or rocks.

D. None of these

B. Geothermal heatA. Geological heat

C. Volcanic heat

Device that takes advantage of the relatively constant temperature of the Earth’s interior, using it as a source and sink of heat for both heating and cooling.

D. Geothermal turbinesC. Geothermal heat pumps

A. Geothermal devicesB. Geothermal generator

The spring that shoots jets of hot water and steam into the air is called

D. Guyshen

A. Geyser

C. Thermal jetB. Hot jet

What is the power seat width of a spray valve?

D. 1/4 in.

A. 1/16 in.

C. 1/8 in.B. 1/32 in.

A device which automatically governs or controls the speed of an engine.

D. SpeedometerC. Governors

A. ServomotorB. Indicator

The useful energy transfer in Btu/hr divided by input power in watts. This is just the coefficient of performance expressed in mixed units.

D. Sensible heat ratio

A. Energy efficient ratio

C. Bypass factorB. Coil efficient

If EER is the energy efficiency ratio, and COP is the coefficient of performance then

D. 3.41EERxCOP=1

A. EER=3.41COP

C. EERxCOP=3.41B. COP=3.41EER

Which of the following is a reversed Rankine vapor cycle?

D. Absoption cycle

B. Vapor refrigeration cycleC. Air refrigeration cycle

A. Carnot refrigeration cycle

The most common type of refrigeration cycle, finding application in household refrigerators, air conditioners for cars and houses, chillers and so on.

D. Absoption cycle

B. Vapor refrigeration cycleC. Air refrigeration cycle

A. Carnot refrigeration cycle

Which of the following is a reserved Brayton cycle?

D. Absoption cycleC. Air refrigeration cycleB. Vapor refrigeration cycleA. Carnot refrigeration cycle

A 100kg is at 0˚C is heated by supplying 2000KJ of heat to it. If the heat of fusion is 335kJ/kg how many kilograms of ice will melt into water?

D. 3 kgC. 6 kgB. 10 kgA. 8 kg

Determine the quantity of latent heat transferred to an evaporator when 5 kg of water undergoes those changes from a liquid at 0˚C to ice at 0˚C.

D. 1,800 kJ

B. 1,675 kJC. 1,450 kJ

A. 1,300 kJ

Compute the rate of water transfer by melting an ice at a rate of 50 kg/hr.

D. 12 kJ/secC. 5 kJ/secB. 10 kJ/secA. 8 kJ/sec

10 kg of water at 60˚C receives 42,000kJ of heat coming from the surrounding. Assuming it is open to the atmosphere, how many kilograms of water will be vaporized?

D. 20 kg

A. 18 kgB. 15 kgC. 10 kg

As the liquid changes phase to vapor, its enthalpy

D. Enthalpy has no relation to phase change

A. IncreasesB. DecreasesC. Remains constant

Which of the following processes does not alter the kinetic energy level of a substance?

D. Superheating a vapor

A. FusionB. Adding sensible heat to a solidC. Adding sensible heat to a liquid

Condensers used for larger capacities refrigerators.

D. Low side condenser

B. Water-cooled condensersA. Air-cooled condersers

C. High side condensers

Coolers and chillers for water generally operate with an average temperature difference of

D. 10 to 16 C

A. 3 to 11 CB. 5 to 8 CC. 6 to 22 C

To avoid freezing problems, entering refrigerant should be

D. 0 C

B. Above-2 CA. Below-2 C

C. Equal to-2 C

Suction lines should not be sized too large, as reasonable velocity is needed to carry oil from the evaporator back to the compressor. For horizontal suction lines, the recommended minimum velocity is

D. 4.8 m/s

A. 3.8 m/sB. 6.1 m/sC. 7.1 m/s

Type of turbine used for low heads, high rotational speeds and larger flow rates

D. Impulse turbines

A. Axial flow turbinesB. Reaction turbinesC. Radial flow turbines

To keep the deflected jet out of the way of the incoming jet, the actual angle is limited to approximately

D. 175 deg.C. 165 deg.B. 150 deg.A. 135 deg.

Which of the following turbines are centrifugal pumps operating in reverse?

D. Axial flow turbines

A. Reaction turbinesB. Impulse turbinesC. Tangential turbines

Weight per unit volume is termed as:

D. PressureC. Weight densityB. Specific densityA. Specific gravity

Measure of hotness or coldness of the body

D. Entropy

B. TemperatureC. Energy

A. Pressure

The temperature at which the water vapor in the air begins to condensed, or the temperature at which the relative humidity of air becomes 100%.

D. Freezing pointC. Dew pointB. Boiling pointA. Flash point

It consists of a wet and dry bulb thermometers mounted on a strip of metal

C. PyrometerD. Sling psychrometer

B. GyrometerA. Manometer

A manometer is an instrument that is used to measure:

D. Air volume

A. Air pressure

C. Heat radiation B. Condensate water level

The relationship of water vapor in the air at the dew point temperature to the amount that should be in the air if the air were saturated at the dry-bulb temperature is:

D. Run faster

A. Partial pressure actual dew point

C. Relative humidityB. Percentage humidity

All of the following statements about wet bulb temperature are true, EXCEPT

D. Wet bulb temperature equals both dry-bulb and dew point temperature at 100% relative humidity

C. Wet bulb temperature lies numerically between dew point and dry bulb temperature for unsaturated systems

A. Wet bulb temperature aequals adiabatic saturation temperatureB. Wet bulb temperature is the only temperature necessary to determine grains water per lb of dry air

Heat added to or removed from a substance that cause a change of temperature:A. Absolute heat

D. Sensible heatC. Specific heatB. Latent heat

Plunger pumps are only single-acting and are suitable up to approximatelyA. 2000 psi

D. 10,000 psiC. 8,000 psiB. 4000 psi

The ratio of the actual to the ideal heat transfer coefficient.

A. Fouling factor

C. Cleanliness factorD. Biot number

B. Sensible heat ratio

The ratio of the maximum to minimum mass steam flow rates at which the temperature can be accurately contained by the desuperheater.A. Cleanliness factor

C. Turndown ratioD. Fouling factor

B. Capacity factor

Used to described the act of blowing the exhaust product out with the air-fuel mixtureA. SuperchargingB. Scavenging

D. ChokingC. Honing

Which of the following compresses and increases the amount of air that enters the cylinder per stoke

B. ScavengingA. Supercharging

D. ChokingC. Honing

A form of supercharging in which the exhaust gases drive the supercharger

B. HoningC. TurbochargingD. Blower charging

A. Lugging

The maximum speed of the turbine under no and no governing action is called

B. Pre governing speedA. Runaway speed

D. No load governingC. Governing speed

Which of the following statements is false when gasoline is used as diesel fuel.

B. Gasoline wears the fuel-injection pumps because of its low viscosityC. Addition of lubrication oil to gasoline will just severe the situation D. All of the above

A. Gasoline does not ignite

Which of the following is an advantage of hydro-plants?A. Hydro plants provide ancillary benefits like irrigation, flood control, aquaculture navigation etc.B. Modern hydro generators give high efficiency over considerable range of load. This helps in improving the system

D. All of the above

C. Due to its great ease of taking up and throwing off the load, the hydro power can be used as the ideal spinning reserve in a system mix of the thermal, hydro and power station

The hole area behind the dam draining into a stream or river across which dam has been constructed is called

B. ForebayC. Catchment areaD. Reserve potential

A. Lake

Dams constructed primarily to store flood waters called

B. Diversion damsC. Detention damD. None of the above

A. Storge dams

A channel which lead water to a turbine is called

B. Tailrace

D. HeadraceC. Penstock

A. Canal

Sometimes called percentage humidity

B. Absolute humidity

D. Saturation ratioC. Humidity ratio

A. Relative humidity

When measuring ____________ of air, the bulb of the thermometer should be shaded to reduce the effect of direct radiation

B. Wet bulb temperatureA. Dry bulb temperature

C. Critical temperatureD. Saturation temperature

An ordinary thermometer whose bulb is enclosed in a wetted cloth sac or wickA. Dry bulb thermometerB. Wet bulb thermometerC. Ordinary thermometerD. Mercury thermometer

To obtain an accurate reading with a wet bulb thermometer, the wick should be saturated with

B. VaporA. Clean air

C. MoistD. Clean water

The amount by which the wet bulb temperature is reduced below the dry bulb temperature depends on the relative humidity of the air and is collectiveA. Range

D. Wet bulb depression

B. ApproachC. Drift

The measure of the relationship between the dry bulb and dewpoint temperature of the air and as such, it provides a convenient means of Dewpoint temperature of the air when the dry bulb temperature is known

D. Relative humidity

A. Wet bulb temperatureB. Saturation temperatureC. Humidity ratio

An index of the total heat (enthalpy) of the air

B. Saturation temperatureA. Wet bulb temperature

C. Dry bulb temperatureD. Dewpoint temperature

The sensible heat of the air is a function of theA. Wet bulb temperatureB. Dry bulb temperatureC. Dewpoint temperatureD. Saturation temperature

The latent heat of the air is a function of theA. Wet bulb temperature

C. Dewpoint temperatureB. Dry bulb temperature

D. Saturation temperature

The total heat of air is a function of the

C. Dewpoint temperature

A. Wet bulb temperatureB. Dry bulb temperature

D. Saturation temperature

A single suction pump having its suction nozzle on the opposite side casing from the stuffing box and having the face of the suction perpendicular to the longitudinal axis of the shaft.

D. Horizontal pumpC. End suction pumpB. In line pumpA. Centifugal pump

A centrifugal pump with one or more impellers discharging into one or more bowls and a vertical educator or column pipe used to connect the bowls to the discharge head on which the pump driver is mounted.

C. End suction pumpD. Vertical shaft turbine pump

B. In line pumpA. Horizontal split case pump

A pump that takes suction from a public service main or private use water system for the purpose of increasing the effective water pressure.

D. Vertical shaft turbine pump

B. Booster pumpC. Submersible pump

A. Horizontal split case pump

The measure of the ability of a goal to withstand exposure to the environment elements without excessive crumbling

D. attrition coefficient

B. weatherabilityC. cohensiveness

A. crumbling coefficient

A type of coal that tends to break apart as it burns thereby exposing the unburned coal to the combustion air.

D. aggregate

B. free burning coalC. non-cohensive coal

A. loose coal

A type of coal that produced a fused coal mass as it burns.

D. high-moisture coal

B. caking coalC. soft coal

A. plastic coal

A combustible coal content that produces a major atmospheric pollutant consequently, it is important that coal has a low percentage of this component.

D. hydrogen

B. sulfurC. carbon

A. nitrogen

Which of the following statement is/are true regards to the first law of thermodynamics for a change in state of a control mass

B. Q-W is an inexact differential

D. Q-W is a point functionC. A and B

A. since heat and work are path function Q-W must also be a path function

Which of the following statements is/are true with regards to heat and work.

B. both heat and work are boundary phenomena

D. all of the aboveC. both heat and work are path function

A. heat and work are both transient phenomena

The height of the surface of the water above the gage point

B. velocity head

D. static headC. dynamic head

A. pressure head

The head required to produced a flow of the water.

B. pressure headC. velocity headD. dynamic head

A. static head

The sum of the pressure head and velocity head.

B. pressure head

D. dynamic headC. velocity head

A. static head

The dynamic pressure of the liquid at pump section less the corresponding to the temperature at the same point, converted to liquid.

B. specific headA. NPSH

C. pump operating headA. suction head

The algebraic difference of the discharge and suction heads.

B. TDHC. A and B

A. pump operating head

D. NPSH

The transfer of the heat energy from exhaust gases to compressed air flowing between the compressor and combustion chamber.

B. convectionC. regeneration

A. intercooling

D. economics

The removal of heat from compressed air between stages of compression.

B. exhaustion

D. intercooling

A. regeneration

C. heat evacuation

As a general rule, the cooling water side of the condenser should be schedule for inspection for every:

D. year

B. 3 monthsA. month

C. 6 months

If the compressor runs continually, the cause might be the:

D. scale trap is clogged

B. low pressure switch is jammed shutA. high-pressure cutout switch is jammed shut

C. thermal bulb is not operating properly

If the temperature in the icebox is too high, the trouble could be:

D. insufficient cooling water to the condenserC. automatic controls not functioning properly

A. a clogged scale trapB. air in the system

If frost forms on the cylinders, the cause would be:

D. dehydrator not working properlyC. expansion valve open too wide

A. expansion valve not open wide enoughB. charging valve open too wide

The most likely cause of high superheat would be:

D. back-pressure valve set too highC. expansion valve closed in too much

A. too much refrigerantB. expansion valve open too wide

Short-cycling means that the machine:

C. runs too fastB. stops and starts frequentlyA. grounds out frequently

D. runs too slow

If the cooling water to the condenser should suddenly fail:

C. the expansion valve will closeB. the compressor will shut downA. the solenoid valve will close

D. an alarm will ring to notify the engineer

Calculate the net radiation heat flux exchange of two bodies with surface temperature of 25 deg C. The radiation heat transfer coefficient is 7.0 W/m2-k

B. 750 w/sq m C. 665 w/sq m

A. 700 w/sq m

D. 650 w/sq m

Calculate the reserve factor for a power plant with a load factor of 0.7 average load of 50 MW and rated capacity of 80 MW

B. 1.5C. 1.12

A. 2

D. 1.6

Maximum demand of 30 MW and 10 MW are connected to a power plant with a peak load of 70 MW. What is the diversity factor of the plant?

B. 0.70C. 0.65

A. 0.50

D. 0.86

A gas in piston-cylinder set-up undergoes an expansion of such rate that PV 1.2 =constant. Before the expansion process the pressure of the gas is 300 kpa and the volume is 0.50 m3. If the final volume of the gas is 0.1 m3, calculate the work done by the gas

B. 11.0 KJA. 9.71 KJ

C. 12 KJD. 8 KJ

The phenomenon in which air enters a submerged suction pipe from the water surface is called a:

B. vacuumC. vortex

A. whirlpool

D. thixotropic

Where groundwater ( wells and springs) or surface water (streams and takes) are used for feedwater, water hardness of ___ and alkalinity of pH 10 to be ph should be considered

B. 10-20 ppmA. 0-10 ppm

C. 20-30 ppmD. 30-40 ppm

Which of the following is not a solid fuel?

B. briquettesC. tar

A. peat

D. coke

The memory lost when the operating power is removed

C. initial memoryB. volatile memoryA. power memory

D. quick data

Canisters of helmets shall be removed immediately after having been used or Seal broken and is unused, must be renewed at least once every:

C. 3 yearsB. 2 yearsA. 1 year

D. 4 years

Pump whose purpose is to increase the effective water pressure by sucking water from a public service main or private-use water system

B. vertical shaft turbine pumpC. booster pump

A. horizontal split case pump

D. submersible pump

A small fitting with a double offset, or shaped like the letter U with the ends turned out

B. expansion loop

D. cross-over

A. elbow tee

C. spigot joint

The condition in which droplets of water are carried by steam in the boiler

B. breechingA. priming

D. condensationC. carryover

At the start of the compression process of an air-standard diesel power cycle the pressure is 100kpa and the temp is 15 deg C. for a mean effective pressure of 1362 kpa and compression ratio of 18 the heat of combustion developed is 1800 kj/kg. what is the thermal efficiency of the cycle?A. 65%B. 59%

D. 68%C. 55%

A circular chip ( k= 150 w/ mk) with a diameter d=10mm and thickness t= 4 mm is embedded in a circuit board. Its surface is exposed to the flow of a coolant (h = 250 W/m2k, T = 10 degrees C) while its side and back surface and perfectly insulated. If any point in the chip the temp must not exceed 90 degrees C, what is the steady state heat dissipation of the chip?A. 2.5 WB. 1.6 W

D. 1.8 WC. 2.0 W

A circular chip ( k= 150 w/ mk) with a diameter d=10mm and thickness t= 4 mm is embedded in a circuit board. Its surface is exposed to the flow of a coolant (h = 250 W/m2k, T = 10 degrees C) while its side and back surface and perfectly insulated. If any point in the chip the temp must not exceed 90 degrees C, what is the steady state heat dissipation of the chip?A. 2.5 WB. 1.6 W

D. 1.8 WC. 2.0 W

A 3 cm layer asbestos [k=20 W/m degrees C] is used for a pipe [k=20 W/m degrees C] with 15 cm inside diameter and 12 cm outer diameter. The inside wall temperature of the pipe is maintained at 500 deg C while the outside surface of asbestos at 90 deg C. Calculate the heat loss per meter length

B. 1500 w/mA. 1265 w/m

D. 1100 w/mC. 1400 w/m

A 5m thick flat plane ( k=60 w/ m k) is well insulated on its sides, while the top and bottom surfaces are maintained at 150 deg. Assuming a steady state heat conduction, calculate the temperature 4 m below the top surface.

B. 120 deg cC. 94 deg cD. 80 deg c

A. 100 deg c

A solid of diameter D=0.5 m and surface emissivity of 0.8 contains electrons that dissipate 100 W of heat. If it does not receive radiation from the surroundings, what is the surface temp?

B. 280 deg CC. 230 deg CD. 270 deg C

A. 300 deg C

Which of the following is basically a jet engine that exhausts into a turbine generator?

B. brayton engineA. aeroderivative gas turbine

D. joule turbineC. industrial gas turbine

It is referred to as the maximum continous power available from a hydroelectric power plant even under the most adverse hydraulic condition

B. continuous base power

D. firm powerC. continuous peak power

A. primary power

The interaction that occurs between a system and its surroundings as the system executes a process, which is the result of the system being at the temperature different from the surrounding isA. mass transferB. heat transferC. work transferD. none of the above

Exergy destruction is a result of A. Heat transfer

C. process irreversibilityB. work production

D. none of the above

An air pollutant which isth e result of burning fuels oilsA. ferrous oxide

C. sulfur dioxideB. hydrogen nitride

D. aluminum oxide

Analysis of solid fuel to determine moisture, volatile matter, fixed carbon, and ash expressed as percentage of the total weight of the sampleA. viscometerB. proximate analysisC. ultimateD. pour point

A gas analysis apparatus in which the percentage of oxygen, carbon dioxide and neonoxide in the gas measured by absorption in separate chemical solutions

B. proximateA. orsat

C. ultimateD. pour point

The water added to boiler feed to compensate for the water lost through blowdown, leakage, etcA. condensateB. make-upC. sulfurD. economizer

Gas flow caused by boiler’s pressure being less than boiler’s furnace pressure

B. infraredA. induced draft

C. injectorD. inhibitor

An automatic pressure-relieving device that opens in proportion to the increase in pressure over its opening pressureA. pressure gaugeB. relieve valve C. ammeterD. calorimeter

Air can be prevented from getting into the system by:

B. keeping the dehydrator clean at all timesC. keeping all glands and stuffing boxes on the low pressure side tighter

A. keeping all gland and stuffing boxes on the high pressure side tight

D. running the refrigerant through an aerator

An excessively high head pressure could be caused byA. solenoid valve shut offB. insufficient cooling water to the condenserC. insufficient cooling water to the evaporator coilsD. too much cooling water to the condenser

The solenoid valve is controlled byA. the amount of liquid in the system

D. the thermal switch operated by the icebox temperatureC. the temperature in the condenserB. the amount of gas in the system

If the discharge side of the thermal expansion valve is warmer than the A. expansion valve is working normallyB. expansion valve is not working normallyC. solenoid valve is not working normallyD. scale trap is dirty

If the pressure is too highA. the relief valve should open before the high pressure output

C. the high pressure output switch should operate before the relief valve

B. the relief valve should open and let excess refrigerant go to receiver

D. close in on the suction valve

If a pressurized water reactor (PWR)A. the coolant water is pressurized to work as moderator

C. the coolant water is pressurized to prevent boiling of water in the core

B. the coolant water boils in the core of the reactor

D. no moderator is used

Which of the following property of coal has major influence on the design and operation of a steam power plantA. density of coal

C. ash content of coal B. carbon content of coal

D. shape and size of coal

A boiler horsepower is equal to the evaporation of 3405lbs of 100 degrees c water per hr. how much steam in lb per hour a 700 horsepower boiler can generate?A. 24150 lb / hrB. 21000 lb/ hrC. 18000 lb/hrD. 30000 lb/hr

___ is obtained by mixing and burning precisely the right amount of fuel and oxygen so that products are left once combustion is complete

B. burning combustionA. perfect combustion

C. firing combustionD. burning combustion

What type of boiler commonly used in industrial and heavy commercial application due to less expensive to make low pressure, easier to maintain and repairA. water tube boilerB. fire tube boilerC. air tube boilerD. marine water

During the emergency operation of the boiler, when there is no water in the gauge glass and steam comes out of the bottom trycock, the water level cannot be determined. What preventive measure the operator does to save the boiler

B. add water to compensate the water lossA. shutdown the boiler and do not add water

C. increase the firing rateD. continue to operate the boiler and add water

The most important valve in the boiler operation and the last line of defense against disaster is known asA. pressure gauge

C. safety valveB. compound gauge

D. gate valve

Why should you avoid bending or twisting of fan blades in an air conditioning unit?A. it will not cause ice build upB. it will wear out the motor bearings & cause noiseC. it may not slice suction lineD. it decrease the volume flow of refrigerant

Under normal operating conditions, when a solid material to be dried is placed inside a batch tray dryer, the material is usually subjected

C. under high temperature drying

A. under constant drying conditionsB. under variable drying conditions

D. under low temperature drying

A change of phase directly from vapor to solid without passing through the liquid state is called asA. sublimation

D. depositionC. solidificationB. vaporization

In terms of heat transfer, the use of a cooling tower is said to be more efficient and more economical compared to an ordinary heat exchanger sinceA. large volume of air is available and freeB. temperature profiles of air and water can cross each otherC. large amount of water can be processedD. a cooling tower is much smaller and cheaper than a heat exchanger

It is a form of oxygen photochemicallly produced in nature

B. oxidizing agent

A. ozone

C. oxidationD. C02

What is the chemical formula of ozone

B. D3O

A. O3

C. O2D. O1

In the upper atmosphere, ozone is nade by ultraviolet light reacting with

B. nitrogen

A. oxygen

C. hydrogenD. water vapor

the ozone concentration of parts per million(ppm) is generally considered maximum permissible for how many hours of exposure?

B. 7 hrs

A. 8 hrs

C. 4 hrsD. 3 hrs

How may moisture be removed from air?

B. adsorption

C. A and B

A. condensation

D. none of these

in cooling cycle, the dry bulb temp (db) of the air is lowered, what will happens to the relative humidity

B. decreases

A. increased

C. remains constantD. increases or decreases depending on the temperature at which it is cooled

what is the effect of superheating the refrigerant?

B. it decreases the coefficient of performance

A. it increases the coefficient of performance

C. it lowers the boiling point of the refrigerantD. it increases the suction pressure of the refrigerant

A turbine setting where one disadvantage is the difficulty of lubricating the operating mechanism, with consequent relatively rapid water

A. siphon settingB. open fume settingC. cast setting D. capacity setting

A patented device combining expansion and compression function in a single rotor permitting higher cycle temperatures

B. compressor

A. comprex

C. expanderD. single-shaft

A rough measure of the physical size of the equipment which must handle the specified quantity of the fluid

B. fuel rate

D. air ratioC. thermal efficiency

A. pressure ratio

The ratio of the highest main compressor discharge pressure as the lower main compressor inlet pressure

B. cycle pressure level

A. cycle pressure ratio

C. work ratioD. air ratio

The ratio of the maximum pressure in the cycle to the atmospheric pressureA. cycle pressure ratio

B. cycle pressure levelC. regenerator effectivenessD. thermal efficiency

The ratio of the actual partial pressure exerted by tge water vapor in any volume of air to the partial pressure that would be exerted by the water vapor in the air is saturated at the temperature of the air

B. absolute humidity

A. relative humidity

C. humidity ratioD. saturation ratio

In sensible heating the absolute humidity remains constant but the relative humidity

B. remains constantC. decreases

A. increases

D. zero

The relative humidity becomes 100% and where the water vapor start to condense

B. saturated pointA. dew point

C. cloud pointD. critical point

Why should you avoid bending or twisting of fan blades in an air conditioning unit?A. It will cause ice build-upB. It will wear out the motor bearings and cause noiseC. It may not slice suction lineD. It decreases the volume flow of refrigerant

A type of refrigerant that will not damage the ozone layer.

B. R-22A. Hydrofluorocarbons (HCF’s)

C. Hydrochlorofluorocarbons (HCHF’s)D. R-12

Which of the following is the type of refrigerant that damages Ozone layer?A. Hydrocholorofluorocarbons (HCHF’s)

D. All of these

B. R-22C. R-12

Large-bulb alcohol thermometer used to measure air speed or atmospheric condition by means of cooling.

D. Wet Bulb Thermometer

A. Kata thermometerB. JJ Thompson ThermometerC. Kelvin Thermometer

The phenomenon that warm air rise and cold air settle is called

D. Ventilation

A. StratificationB. Setting DueC. Sedimentation

Which of the following components of the window air conditioning system cleaned annually?

D. All of theseC. Motor and compressorB. Fan blades and fan motorA. Evaporator and condenser

A cooled heat exchanger that transfer heat from compressed air to cooler air.

C. EconomizerD. Aftercooler

B. RefrigeratorA. Intercooler

All the control stand, pitch of the turbine blades must be adjusted manually by a

C. Gate

A. SensorB. Float valve

D. Switch

The most commonly used adjustable-blade propeller turbine.

C. Impulse turbineB. Kaplan turbineA. Francis turbine

D. Pelton wheel

Runner blades are adjusted automatically in synchronism with turbine wicker gates by a/an.

B. GovernorC. Oil servomotor

A. Control valve

D. Manual operation

What is supplied to the servomotor from the turbine governor oil system through the generator shaft and through a control valve.

B. Air

D. Oil

A. Water

C. Steam

Used to exhaust air from the casing for starting.

B. DearatorA. Ejectors

D. BlowerC. Injector

Advantage for propeller turbines of all typesA. open flumes settingB. siphon setting

D. capacity settingC. cost setting

A large paper plant uses its own cogeneration power plant to generate its electricity because.A. It permits the use of a more efficient generator

D. It provides a more efficient conversion of fuel

B. The company can better control the voltageC. It does away with high power lines leading to the plant

An office air conditioning system drew in a quantitity of hot air from outside, cooled it to 1 deg C, and mixed it with the internal air of a building. Care was taken to supply enough fresh air to eliminate objectionable odors. The temperature of the space was maintained constant, and yet some people became uncomfortable in the afternoon, why?

B. When a person spends a long time at a constant temperature that person becomes uncomfortable

A. The relative humidity had dropped

D. The complainers were not really uncomfortable, they were just bored

C. Radiant heat from others in the office made the space uncomfortable

The volumetric output of a centrifugal pump is reduced by closing a valve part way on the intake side of the pump, throttling the intake. The reduction of flow is accompanied by “popping” noises which seem to come from inside the case. What is the probable cause?A. The impeller has broken

D. The fluid is cavitating

B. Dirt particles have got into the pump intakeC. The intake valve flow seal is loose and vibrates

If a man touches two metals which were kept together at room temperature, why would one metal feel colder that the other?A. One has a high temperature coefficient

C. One has a high thermal conductivityB. One has a lower temperature

D. One has a high temperature

The ratio of the internal thermal resistance of a solid to the boundary layer thermal resistance is described by:

C. Prandtl number

A. Biot numberB. Nusselt number

D. Reynolds number

An instrument which is commonly used to measure the most important characteristics of fuel oil which is viscosity is known as;

C. Acid Testmeter

A. Saybolt ViscosimeterB. Ph-meter

D. Gravity meter

Equipment designed to reduce the amount of water vapor in the ambient atmosphere;A. Blower

C. DehumidifierB. Condenser

D. Cooling tower

In a refrigerator, this is a chamber for storing low-side liquid refrigerant in a system, which also serves as a surge drum.A. Condenser

D. Accumulator

B. EvaporatorC. Compressor

The measure of a fluids resistance to flow(the internal friction of a fluid) as temperature increase.A. Density B. Viscosity

D. TemperatureC. Specific gravity

A mechanical device used to burn solid fuel specifically used in coal power plant.

B. BoilerA. Stroker

D. CondenserC. Staybolt

The chemically correct ratio of air fuel a mixture capable of perfect combustion with no unused air or fuel,

B. Pour pointC. Stoichiometric ratioD. Stack

A. Fuel point

When a solid material is said to be “dry” it means that

C. The solid contains equilibrium moistureB. The solid still contains very small amount of moisture

D. The weight of the solid is the same as the bone dry weight

A. The solid does not contain any moisture

A hot block is cooled by blowing cool air over its top surface. The heat that is first transferred to the air layer close to the block is by conduction. It is eventually carried away from the surface by:

C. Conduction

A. Convection

D. Thermal

B. Radiation

When drying banana chips under the sun, the rate of drying is faster

C. On a cloudy dayD. On a hot and windy day

A. On a slightly breezy dayB. On a calm day

Reflector of a nuclear reactor are made up of

D. SteelC. Beryllium

A. BoronB. Cast iron

The function of a moderator in a nuclear reactor is

D. To transfer the heat produced inside the reactor to a heat exchanger

A. To slow down the fast moving electrons

C. To start the chain reactionB. To speed up the slow moving electrons

Which of the following is the most commonly used moderator?

D. Heavy water

A. Graphite

C. DeuteriumB. Sodium

Ammonia leaks in the condenser can be detected by:

D. Applying a scapy mixture to the condenser heads and looking for bubbles

B. Applying litmus paper to the circulating water dischargeC. Adding oil of peppermint to the system and tracing the small

A. Smelling the discharge water

Air arrangement of headwater tubes located in the boiler

D. Boiler

A. Economizer

C. EvaporatorB. Condenser

Scale in boiler can.A. Create low steam quality

D. Inhibit circulation and heat transferC. Over blow-off lineB. Cause foaming

The effectiveness of a body as a thermal radiator at a given temperature.A. AbsorptivityB. EmissivityC. ConductivityD. Reflectivity

In a cooling tower, the water is cooled mainly by;

A. Condensation

C. ConvectionB. Evaporation

D. Conduction

A temperature above which a given gas cannot be liquefied;

A. Cryogenic Temperature

D. Critical Temperature

B. Absolute TemperatureC. Vaporization

What part of heat exchangers that are classified as radiant convection and placed at the near of the furnace, where they receive the bulk of the radiation from the flame.

D. Evaporators

A. Radiant superheatersB. CondenserC. Radiator

Which of the following is the major consideration while selecting the nuclear power plant?

D. Availability of waterC. Disposal of wasteB. Load centerA. Safety

A moderator is used to:

D. Direct flow of electron

A. Slow down neutronsB. Slow down electronsC. Accelerate neutrons

Which of the following material is not used as moderator?

D. Light waterC. AluminumB. BerylliumA. Graphite

In nuclear power plant which of the following is used to slow down the fast neutron?

C. Control rodD. Moderator

B. ShieldA. Reflector

Control rods for nuclear reactors are made of

D. LeadC. CadmiumB. ConcreteA. Graphite

The reactor in which fissionable fuel produced is more than the fuel consumed is known as

D. None of the above

B. Breeder reactorC. Thermal reactor

A. Fast reactor

Heavy duty gas turbines typically have

D. Quadruple shaftC. Single shaftB. Triple shaftA. Double shaft

Which of the following statements is not a key feature of fourier’s heat conduction.

C. It is vector expression indicating that the heat flux is normal and the direction of decreasing temperature.D. Assume that the thermal conductivity is constant with respect to temperature of the material

B. It defines an important material property called thermal conductance

A. It is phenomenological

What is the color code of steam line in geothermal power plant?

D. RedC. Silver GrayB. BlueA. Green

What is absorbed by sulphites in boiler water treatment?

C. Carbon monoxideD. Impurities settled in mud drums

B. OxygenA. Carbon dioxide

A flow volume in which the fluids flow upward through a tapered tube lifting a shaped weight to a position where the upward force just balances to weight.

C. Viscometer

A. RotameterB. Thermometer

D. Ammeter

An instrument that register total pressure and static pressure in a used to determine velocity.A. Ammeter

C. Pitot tubeB. Rotameter

D. Pour point

A heat engine whose thermodynamic efficiency is greater than that of a Carnot device using the same energy reservoir is known as:A. A perpetual machine of the zeroth kindB. A perpetual machine of the second kindC. A perpetual machine of the first kindD. A perpetual machine of the third kind

The degrees of power interval in 4-stroke cycle of a six-cylinder engine isA. 60 degrees

D. 120 degreesC. 90 degreesB. 180 degrees

The portion of sunlight, rich in ultraviolet rays, which has a strong effect on photographic plate.A. Gamma rays

D. Actinic raysC. Beta raysB. X-rays

Which of the following does not illustrate the effect of temperature or pressure on gas solubility?A. Air bubbles from on the sides of a warm glass of water

D. Air is more humid on rainy daysC. Boiling frees water gasesB. Soda pop is bottle under pressure

Among the effluents that may be released from the hydrothermal reservoir which one is the most toxic?A. Carbon dioxideB. Hydrogen sulfideC. MethaneD. Ammonia

Newton said that a projectile if given enough horizontal velocity will not fail to the earth. Instead, it moves along a path around the earth. The 1st artificial satellite that verified Newton’s statement isA. Apollo 1

C. Sputnik 1B. Houston 1

D. None of these

A refrigerant control valve that maintains a constant pressure in a evaporator

A. Bleed valve

C. Automatic expansion valveB. Angle valve

D. Ball check valve

A rigid contains gas a 100 kpa and 10 degrees C. the gas is heated until the temperature reaches 100 degree C. Calculate the work done by the system.

D. 1.5

B. 0A. 2

C. 1

The compression ratio in an air-standard Otto cycle is 10. At the beginning of the compression stroke the pressure is 120 kpa and the temperature is 15 degree C. Calculate the pressure and the temperature at the end of the compression process.

D. 3,200 kPaC. 3,014 kPa

A. 4,000 kPaB. 3,500 kPa

Find the thermal efficiency of an air-standard Otto power cycle with a compression ratio of 7.

C. 65%D. 54%

A. 60%B. 50%

At the beginning of the compression stroke in an standard Otto cycle. The pressure is 100 kPa and the temperature is 15 degree C. the compression ratio is 8 and work is 1,017.7 kj/kg. Determine the mean effective pressure.

D. 1,550 kPa

A. 1,406 kPa

C. 1,350 kPaB. 1,500 kPa

The compression ratio in an air standard diesel cycle is 20. At the beginning of the compression process the pressure and the temperature are 0.12 Mpa and 15 degree C respectively. What is the pressure at the end of the compression process?

D. 8,200 kPa

B. 7,955 kPaC. 8,300 kPa

A. 8,500 kPa

The accounting of all energy units involved in a system a cycle of an piece of equipment

C. Summation of energy unitsD. Heat Balance

A. Thermodynamic solutionB. Equilibrium condition

It refers to any arrangement whereby steam is bled from a turbine more pressure for any purpose whatsoever

C. Bled-off cycleB. ExtractionA. Regeneration

D. Regenerative extraction cycle

Any arrangement whereby steam is bled from a turbine for a purpose of thermal regeneration of the condensate to a temperature level approaching that of the boiler water.

B. Extraction cycleA. Regenerative

D. Regenerative extraction cycleC. Bled-off steam cycle

The steam extracted from the turbine

B. Extraction

D. A and C

A. Bled steam

C. Extracted steam

The point of particular pressure where the steam is extracted

B. Extraction point

D. A and B

A. Bleeder point

C. Bleeder

Vapor pumps that raise the pressure of the refrigeration to a level that permits sufficient heat rejection to the condensing medium.

A. Fans

C. CompressorD. Suction

B. Blower

Low temperature heat exchanger that is used to absorb heat from the refrigerated space and transfer it to the refrigerant in its tubes so that it can be transported to another and released.

D. Compressor

B. EvaporatorC. Capillary tube

A. Condenser

The substance employed as cooling effect to absorb heat from the refrigerated space in called

D. MoistureC. RefrigerantB. FeedwaterA. Condensate

It is inversely proportional to the power required to grind the coal to certain fitness

D. Inverse power coefficientC. Grindability indexB. Fireness indexA. Pulverizing index

The temperature where the ash becomes very plastic, somewhat below the melting point of the ash.

D. Ash – liquefaction temperature

A. Ash- softening temperatureB. Ash- plasticity temperatureC. Ash – fluidity temperature

The amount of chemical energy in a given mass or volume of fuel.

A. Heating value

D. A and C

B. Energy storageC. Calorific value