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UNIT-5

1). Ina fully developed flow there is no ______

A). wall shear C). Gravity D). Pressure component D) none of these.

2). what are stream lines?

A). Stream tube B). Imaginary line C) velocity vector tangent to line D). All the above

3). Wall shear is a result of?

A). Viscous forces. B) Gravitational. C). Pressure D). None of these.

4). How can effect of Brownian movement can be reduced?

A) Gravitational force). Rotational force. C) Centrifugal force D). None of these.

5). what is the maximum attainable velocity for a particle under gravity influence?

A) Terminal velocity B) Average velocity C) local velocity D) All the above.

1). what are stream lines___________

2). what is significance of Stokes law_________

3). When Settling of particles is called Free settling_______

4). Difference between free and hindered settling_______

5). Kozeny-Carman equation is applicable for flow at Reynolds number________

UNIT-7

1).Devices used for restricting leakage around moving parts?

A). Fittings. B) Values C) Stuffing Boxes D) All the Above.

2).Value which permits flow in one direction only?

A) Globe value B) Gate value C) Check value D) all the above

3). what is the heart of the pump?

A). Suction line. B) Shaft.C) Impeller D) All the above.

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4). what is Reciprocating pump?

A). Plunger pumps B) diaphragm C) piston Pumps D) All the above.

5). what is the principle upon which Large Fans work?

A) Rotational force. B) Gravitational. C) Centrifugal force. D) None of these

1). __________are stuffing boxes?

2). Thin walled tubes are joined by___________

3). Expand IPS_____________

4). Expand NPS______________

5). ____________pipes are extensively used for water transport?

UNIT-8

1). what is full bore meter?

A). insertion meter B) Pitot tubes C) Venturi meter D) none of these.

2). in venturi meter which instrument (ring) is used to measure individual pressures?

A). Throat section B) outlet section C). Piezometer ring D) all the above.

3). which is an example of Insertion meter?

A). Pitot tube B). Venturi meter C). Orifice meter D). None of these.

4). what is a Vena-Contracta?

A). expansion of water B) Compression of water C). Free flowing jet in downstream. D).none of

these.

5). what is the purpose of Pitot tube?

A). to measure local velocity B). Average velocity C). Density D). None of these

1). Variable head meters are_____________

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2). Variable area meters are_____________

3) Among venturi and Orifice which is more advantageous_______________

4).Coriolis meters works on the principle of ___________

5).To measure local velocity which type of instrument is used___________

UNIT- 6

1). with increase in velocity across bed of particles Pressure drop__?

A). Decreases. B) Constant. C) Increases. D) All the above.

2).If bed is in Fluidized condition, pressure drop across the bed?

A). decrease. B) Increases C) remains same. D) All the above.

3). in particulate fluidization, the average bed density at a given velocity remains

A). decrease. B) Increases C) remains same. D) All the above

4). In fluidization the fluid velocity at which OFFSETS the weight of the bed?

A). min fluidization velocity. B). Terminal velocity. C) Local velocity. D) None of these.

5). what can we find using Ergun equation?

A). Pressure drop. B).Min fluidization velocity. C). Terminal velocity. D) All the above.

1).what is Fluidization____________

2). in gas-solid fluidization the disadvantage is______________

3). When all the particles are entrained in the fluid is called ___________Fluidization.

4). Fluidization technique is widely employed in _________Industries.

5). Rain water droplets before touching earth reaches to__________velocity.

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Answers

UNIT-5

OBJECTIVE

1).A

2). C, D

3). A

4). C

5). A

FILL IN THE BLANKS

1).Imaginary lines in a flow where net velocity vector is tangent to line.

2). to calculate resistance of small particles in flow

3). Not affected by solid boundaries and neighbouring particles.

4). Velocity gradients of particles are not disturbed in free settling. Not so in hindered settling.

5). 1.0

UNIT-6

OBJECTIVE

1). C

2). C

3). C

4). A

5) A, B

FILL IN THE BLANKS

1).Condition of particles of bed that simulate fluid nature under proper velocity conditions.

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2). Un even contacting of gas and solid .

3). Continuous fluidization.

4).FCC in petroleum cracking.

5). Terminal Velocity.

UNIT-7

OBJECTIVE

1).C

2).C

3).C

4) D

5) C

FIIL IN THE BLANKS

1). Lattern glands

2). Soldering or compression or flare fittings.

3). Iron pipe sige

4) Normal pipe sige.

5). PVC

UNIT-8

OBJECTIVE

1). C

2).C

3). A

4). C

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5). A

FILL IN THE BLANKS

1). Full bore meters

2). Rota meter

3).Orifice meter

4). Coriolis force

5). Pitot tube.