DgcaPaper2SampleQuestions.doc

8/22/2019 DgcaPaper2SampleQuestions.doc

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(1) During towing operations

a) Pilot must be in the cockpit to operate brakesb) A qualified person should be in the cockpit to operate brakes

c) A person should be in the cockpit to look for obstructions

d) Persons should be stationed at the nose and each of the wing-tips

(2) Tail-wheel type aero planes have the greatest tendency to move side-ways during

taxing when there isa) Cross wind

b) Tail wind

c) Head wind

d) None of these

(3) When parking a aircraft after towing, the nose wheel should be left

a) Pointed straight ahead

b) As it was when towing stoppedc) Unlocked

d) All are correct

(4) Before towing a large aircraft

a) Ballast should be put in the cockpitb) Tow bar should be fitted with a strong bolt

c) Tow bar should be fitted with a shear bolt

d) None of these

(5) The most commonly used driving tool by a mechanic is

a) Ball peen hammerb) Cross peen hammerc) Claw hammer

d) Sledge hammer

(6) While towing a large aircraft, personnel required are

a) Two in cockpit

b) As in a) plus one each on wing tips

c) As in b) plus one at the taild) As in c) plus one in overall control of operation

(7) I) Body hammers are used for driving stakes into the ground II) Sledge hammers areused for smoothing or stretching the metal

a) Only I) is correct

b) Only ii) is correctc) Both i) and ii) are correct

d) Neither i) nor ii) is correct


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(8) I) Body hammers are used for driving stakes into the ground II) Sledge hammers are

used for smoothing or stretching the metal

a) Only I) is correctb) Only ii) is correct

c) Both i) and ii) are correct


(9) I) Claw hammers are basically used for driving and pulling out II) The wedge of a

cross peen hammer is parallel to the handlea) Only i) is correct

b) Only ii) is correct



(10) A punch is used to

a) Mark a location

b) Remove a damaged rivetc) Locate a drill properly

d) AM are correct(11) i) A pin punch is used to remove the shank of the rivet from the hole after rivet head

has been chiselled off ii) Diameter of pin punch should be 1/64 inch smaller than the

diameter of the rivet to be removeda) Only I) is correct




(12) i) Location given by a prick punch should always be punched later with a centre

punch. ii) Goggles must be used while using any type of punch.a) Only i) is correct


c) Both I) and ii) are correctd) Neither i) nor ii) is correct

(13) . I) A mushroom head on a punch is better than a crown head since chances of

hammer slip are reduced II) A centre punch can be used for a variety of punchingapplications

a) Only i) is correct


d) Neither I) nor ii) is correct

(14)Most commonly used slip joint plier has a length of

a) 4 inches

b) 6 inches

c) 10 inches d) 12 inches


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(15) Duckbill plier

a) Is a flat nose plierd) Neither i) nor ii) is correct

(16) Needle nose pliers are used fora) Extracting thin/sharp components

b) Extracting nails

c) Gripping small electronic componentsd) All are correct

(17) i) A chisel can never cut the material all by itself ii) A die is a cutting tool

a) Only i) is correctb) Only ii) is correct

c) Both I) and H) are correct


(18) Cutting edge of a chisel is generally ground to an angle of

a) 30 degreesb) 70 degrees

c) 90 degrees

d) 110 degrees

(19) Regarding a cutting chisel which statement is incorrect?

a) It is made from high grade steel

b) Its cutting edge is always wider than the shankc) Cutting edge is flat so that force is applied uniformly on the surface

d) Chisel body is either square or octagonal

(20) i) A cape chisel is the proper tool to use for knocking the head off a rivet after it has

been drilled through ii) A cape chisel is forged from the same type of tool steel as the

cold chisela) Only i) is correct




(21) Aviation snip

a) Is same as Dutchman snipb) Has serrated cutting edges

c) Can easily cut thick sheet metals

d) All are correct

(22) Files are classified with regard to

a) Physical shape

b) Length c) Type of cut


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(23) Various types of cut of a file are

a) Single cut rb) Smooth cut

c) Rasp Both a) & b)

d) All are correct answers

(24) Vixen file have

a) Curved teethb) No taper either in width or thickness

c) A special file holder

d) All are correct

(25) ) Wood rasp files have individual teeth cut on to their surfaces ii) Wood rasps are

used to remove wood from a surface where it is not practical to use a saw or a plane


b) Only ii) is correctc) Both I) and ii) are correct


(26) i) Mill files have uniform thickness, but are tapered in width ii) Hand files have

uniform thickness and widtha) Only i) is correct




(27) I) Half round files are tapered in both thickness and width ii) Knife files are tapered

in thickness as well as in widtha) Only i) is correct


c) Both i) and ii) are correctd) Neither i) nor ii) is correct

(28) For filing acute angles, one should use

a) Knife filesb) Round files

c) Triangular files

d) All are correct

(29) Most files used in aviation have a length of

a) 4-10 inchesb) 6-12 inches

c) 6-16 inches

d) 10-20 inches


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(30) The part of a file that fits into the handle is called

a) Single cut r

b) Smooth cutc) Rasp Both a) & b)


(31) I) File is basically a chisel but with many cutting edges ii) Triangular files are used

for cutting teeth of handsaws

a) Only i) is correctb) Only ii) is correct



(32)Double cut files have rows of teeth. These teeth are set at

a) 45 degrees and 70-80 degrees

b) 45 degrees and 45 degrees

c) 70-80 degrees and 70-80 degreesd) None of these

(33) There are five cuts of files ranging from coarsest to the finest. Find out the wrongone

a) Coarse

b) Bastardc) Smooth

d) Finest

(34) File should be kept clean bya) Tapping it against the bench

b) Brushing it with a wire brush

c) Lubricating it occasionallyd) Both a) & b) are correct

(35) Which type of file has only three grades: regular, fine and smootha) Vixen

b) Wood rasp

c) Knife

d) Triangular

(36) Characteristics of steel are controlled by

a) Removal of carbon from ironb) Types of alloying elements added to it

c) Amount of alloying elements added to it

d) All are correct

(37) Bearing strength of a material refers to

a) Direct tensile load it can bear

b) Resistance to tear at the point of applied load


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c) Resistance to fracture at the point of applied load

d) Resistance to shear

d) Point

(38) Characteristics of metals relating to drawing it into wire is

a) Tensile strengthb) Malleability

c) Ductility

d) Brittleness

(39) Fusibility of a metal refer to its property that permits

a) Welding

b) Drawing into thin sheetsc) Drawing into wires

d) Good thermal conductivity

(40) Aluminum alloy 11( impliesa) Pure aluminum

b) It contains ll% copperc) It contains 111% zinc

d) Heat treated alloy

(41) Aluminum alloys have a four digit index system where each digit signifies

something. In 2024, the first digit indicates

a) Copper is the major alloying element

b) Two alloying elements have been addedc) Total percentage of alloying elements

d) None of these

(42) Alclad is a metal consisting of

a) Aluminum alloy core with pure Al surface

b) Pure aluminum core with Al alloy surfacec) Alternating layers of pure Al & Al alloys

d) None of these

(43) Which of the following aluminum alloy is heat treated and artificially aged?

a) 3(3-Fb) 5052-H

c) 6061-0

d) 7075-T6(44) Clad aluminum alloys are used in aircraft. They are

a) Lighter than other aluminum alloys

b) Stronger than unclad aluminum alloysc) Easily heat treatable

d) Less susceptible to corrosion

(45)Aircraft structural members made from sheet metal can normally be


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a) Repaired, except when subjected to compressible loads

b) Repaio" value="b" name="question38"> b) Malleability

c) Ductilityd) Brittleness

(46) Medium carbon steels have a carbon percentage ofa) 0.1 0.3

b) 0.3 0.5

c) 0.5 1.0d) 1.0 2.0

(47) High carbon steel is generally used for

a) Shock absorbersb) Landing gear struts

c) Engine mounting bolts

d) Springs & files

(48) What material is used in the construction of firewall of aircraft engines?

a) Aluminium alloyb) Stainless steel

c) Chrome-molybdenum steel

d) Tungsten steel

(49) Which of the statement is correct?

a) oth heat treatable & non heat treatable aluminium alloys can be strain hardened

b) Strain hardening is same as cold workingc) Strength & hardness increases during cold working

d) All are correct

(50) Find out the wrong statement regarding titanium

a) It is highly corrosion resistant

b) It maintain strength at elevated tern peraturesc) It has good resistance to creep

d) It is magnetic

(51) Find out the wrong statement regarding titaniuma) It is highly corrosion resistant

b) It maintain strength at elevated tern peratures

c) It has good resistance to creepd) It is magnetic

(52) Files used in fitting shop are made froma) Cast iron

b) High carbon steel

c) Chrome steel

d) Mild steel


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(53) Property of a material to be drawn plastically before breaking is called ductility.

Most ductile material isa) Copper

b) Gold

c) Leadd) Tin

(54) i) Aluminium has high electrical and thermal conductivity ii) Ductility of aluminiumimproves with the addition of iron & silver



c) Both i) and ii) are correctd) Neither i) nor ii) is correct

(55) i) Muntz metal is same as yellow brass ii) Muntz metal contains copper & zinc in the

ratio of 3:2a) Only i) is correct



(56) Potential difference between two conductors insulated from each other is measured

in

a) Ampere

b) Coulombc) Ohm

d) Volt

(57) Correct way to connect a test voltmeter in a circuit is

a) In series with a unit

b) In parallel with a unitc) Between source voltage and load

d) Both b) & c) are correct

(58) Which term means .(1 amperea) Micro ampere

b) Milli ampere

c) Kilo amperec) Wrought iron

d) Carbon chrome steel

(59) Unit used to express electrical power is

a) Ampere

b) Volt


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c) Watt

d) Coulomb

(60) Transfer of electrical energy from one conductor to another without the aid of

electrical connection is

a) Inductionb) Air gap transfer

c) Not poss

d) Possible but will cause excessive arcing thus not practical

(61) Magnetic lines of force pass most readily through

a) Aluminum

b) Copperc) Iron

d) Titanium

(62) In a straight conductor, the resistance is not affected bya) Length

b) Temperaturec) Shape of cross section

d) Material

(63) Pitot pressure varies with

a) Speed

b) Air density

c) Speed and Air densityd) None of these

(64) Altimeter and rate of climb indicator utilizea) Static pressure

b) Pitot pressure

c) Either a) or b)d) Both a) and b)

(65)Pitot static system have heating elements to

a) Remove moisture from the airb) Prevent ice formation

c) To permit flying at high altitude

d) All are correct

(66) Pressure heads of pitot static system should not be painted, because it

a) Impairs their thermal efficiencyb) May cause obstruction of orifices

c) None of the above


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(67) Leak test of pitot static system should be carried out

a) After installation of a component / instrument

b) Whenever malfunctioning is suspectedc) At specified periods indicated in servicing schedules

d) All are correct

(68) Which instruments are connected to the aircraft pitot static system?

a) Vertical speed indicator

b) Altimeterc) Airspeed indicator

d) All are correct

(69) The instrument that measures difference between pitot & static pressure isa) Altimeter

b) Pressure gauge

c) Airspeed indicator

d) Vertical speed indicator

(70) The unit where calculations are processed is calleda) Central processing unit (CPU)

b) Control unit

c) Arithmetic and logic unit (ALU)d) Computing unit

(71) Sequence of steps for computing a program is known as

a) Flow chart

b) Sequence processc) Algorithm

d) None of these

(72) Basic function of a computer is

a) Addition

b) Multiplicationc) Division


(73) EDP stands fora) Electrical data processing

b) Electronic data processing

c) Entry data processingd) Electronic discrete programme

(74) A computer basically

c) Perform mathematical calculations

d) All are correct


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(75) Computer stores instructions in

a) English language

b) Decimal number systemc) Octal number system

d) Binary

(76) In a straight and level flight of an aircraft

a) Lift equals aircraft weight

b) Lift is more than weightc) Lift is less than weight

d) Depends upon size of aircraft and its loading

(77) Whenever lift is generated, there is certain amount of drag associated with it. This iscalled

a) Form drag

b) Skin friction drag

c) Induced dragd) Shape drag

(78) Lift generated by an airfoil is maximum at an angle of attack of about

a) 0 degrees

b) 4 degreesc) 12 degrees

d) Stalling value

(79) Lift generated by an aircraft depends upona) Density, forward velocity & aircraft area

b) Density, square of forward velocity and aircraft area

c) Density, square of forward velocity and wing aread) Density, forward velocity & wing area

(80) Lift on a winga) Acts through centre of gravity

b) Acts vertically upwards

c) Is perpendicular to chord line

d) Acts vertically upwards through centre of pressure

(81) Which statement is correct?

a) Self-locking nuts are used on a/c to provide tight connections which will not shakeloose under severe vibration

b) S.L.N are used where bolt or nut subject rotation

c) Both a) & b)d) None of these

(82) Elastic stop nuts are not used

de2"> a) English language


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b) Decimal number system

c) Octal number system

d) Binary

(83) Special washers are useda) Where a bolt is installed at an angle to a surface

b) Where perfect alignment with a surface is not required

c) Both a) & b)d) ) None of these

(84) The marking found on the head of the stud

a) Body diameter, length & shank typeb) Body diameter, length & head type

c) Only length

d) None of these

(85)Airloc fasteners consists of three parts

a) Stud, grommet and receptacleb) Stud & grommet

c) Stud, cross pin and receptacle

d) None

(86) 7x19 cable is made up

a) Seven strands of 7 wires

b) Nineteen strands of seven wires eachc) Seven strands of nineteen wires each

d) 19 strands of 19 wires each

(87) The diameter range of 7x19 cables are

a) 1/8 to 3/8

b) 1/16 to 3/32c) 1/8 to 1/4

d) 1/8 to 1/16

(88) Turnbuckle assembly is aa) Mechanical screw

b) Making minor adjustment in cable length and adjusting cable tension

c) Consisting two threaded terminals and a threaded barreld) All the above

(89) Push-pull tubes are generally made in short lengths toa) Prevent vibration and bending under tension load

b) Prevent vibration and bending under compression load

c) Only prevent vibration

d) None


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(83) Special washers are used

a) Where a bolt is installed at an angle to a surfaceb) Where perfect alignment with a surface is not required

c) Both a) & b)

d) ) None of these

(84) The marking found on the head of the stud

a) Body diameter, length & shank typeb) Body diameter, length & head type

c) Only length

d) None of these

(85)Airloc fasteners consists of three parts

a) Stud, grommet and receptacle

b) Stud & grommet

c) Stud, cross pin and receptacled) None

(86) 7x19 cable is made up

a) Seven strands of 7 wires

b) Nineteen strands of seven wires eachc) Seven strands of nineteen wires each

d) 19 strands of 19 wires each

(87) The diameter range of 7x19 cables area) 1/8 to 3/8

b) 1/16 to 3/32

c) 1/8 to 1/4d) 1/8 to 1/16

(88) Turnbuckle assembly is aa) Mechanical screw

b) Making minor adjustment in cable length and adjusting cable tension

c) Consisting two threaded terminals and a threaded barrel

d) All the above

(89) Push-pull tubes are generally made in short lengths to

a) Prevent vibration and bending under tension load

(90) Corrosion resistant steel cotter pin is used in locations where

a) Magnetic material is requiredb) Resistance to corrosion is desired

c) Both

d) None


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(91) Which is correct statement

a) Pin rivet are used only in shear application

b) They should never be used where the grip length is less than the shank diameterc) Both

d) None

(92) Pin rivets

a) Hi-shear rivets

b) Used where access to both side of the material is requiredc) They are approximately three times as strong as solid shank rivets

d) All

(93) 10 KB 105a) Flat head

b) Flat head & countersunk

c) Countersunk

d) None

(94) 10 KB 107a) Closed end and a key

b) Flat head

c) As a and countersunk headd) None

(95) AN 10 DHSA where H indicate

a) 5/8 diameter head drilledb) 5/8 diameter head and shank drilled

c) 5/8 diameter & shank drilled

d) None

(96) 0-rings can be detected by

a) 4 power magnifying glassb) Small cracks, particles of foreign material or other irregularities are checked by rolling

c) Slight stretching of the ring checked by dowel

d) All

(97) Clevis bolt are used for

a) Tension load

b) Tension & shear loadc) Shear load

d) None

(98) Internal wrenching bolts are suitable for use in

a) Shear load

b) Tension & shear load


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c) Tension

d) None

(99) A cross inside triangle indicates

a) Close tolerance bolt

b) Corrosion resistant steel boltc) Stainless steel bolt

d) Screw

(100) A/C screw is generally manufactured with

a) Class-1 fit of thread

b) Class-2 fit of thread

c) Class-3 fit of threadd) Class-4 fit of thread

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DgcaPaper2SampleQuestions.doc