MOTOR VEHICLE MECHANIC- PAGE 2
MOTOR VEHICLE MECHANIC- PAGE 2 MCQs
1:-Which of the following is the first motor vehicle act in India?
A:-Burma Act B:-Madras Act C:-Bombay Act D:-Bengal Act
Ans: D
2:-Centre of gravity of a triangle lies at the point of inter section of
A:-Medians B:-Diagonals C:-Bisector of angles D:-None of the above
Ans: A
3:-Name the engine component that 'carries' the engine over its non-working strokes
A:-Piston B:-Crank shaft C:-Flywheel D:-Connecting rod
Ans: C
4:-The purpose of piston ring is to control
A:-combustion pressure B:-oil consumption C:-cylinder wall lubrication D:-all of the above
Ans: D
5:-On the rear end of the crank shaft we mount
A:-timing gear B:-flywheel C:-counter weight D:-fan pulley
Ans: B
6:-The engine valves are closed by
A:-cam shaft B:-crank shaft C:-timing gear D:-valve spring
Ans: D
7:-Cam shaft of an engine is always mounted
A:-perpendicular to the crank shaft B:-parallel to the crank shaft C:-inclined to the crank shaft D:-any one of the above
Ans: B
8:-Air-fuel ratio changes according to the operating conditions like
A:-speed B:-load C:-speed and load D:-speed, load and temperature
Ans: D
9:-Lean air-fuel mixture is required for
A:-starting B:-idling C:-acceleration D:-cruising
Ans: D
10:-The centrifugal advance mechanism provide ignition advance proportional to
A:-engine load B:-engine speed C:-both 1 and 2 D:-none of the above
Ans: B
11:-Contact breaker points are generally made of
A:-steel B:-copper C:-tungsten D:-vanadium
Ans: C
12:-In diesel engine combustion takes place at
A:-constant pressure B:-constant volume C:-constant temperature D:-none of the above
Ans: A
13:-Why a drain plug is provided in the fuel tank
A:-remove sediments B:-drain fuel C:-both 1 and 2 D:-none of the above
Ans: B
14:-The pressure plate of a clutch is mounted on the
A:-fly wheel B:-friction plate C:-crank shaft D:-clutch cover
Ans: B
15:-When clutch is engaged the spring pressure clamps the friction plate between pressure plate and
A:-flywheel B:-clutch cover C:-reaction plate D:-none of the above
Ans: A
16:-The purpose of 'double declutching' when changing down is to
A:-slow down the lay shaft B:-speed up the lay shaft C:-slow down main shaft D:-speed up the main shaft
Ans: B
17:-Speedometer is driven by the gearbox shaft called
A:-primary shaft B:-lay shaft C:-counter shaft D:-main shaft
Ans: D
18:-In the differential, the crown wheel is attached to the
A:-propeller shaft B:-bevel gear C:-bevel pinion D:-differential cage
Ans: D
19:-Hypoid gear require special lubricant because
A:-tooth is made of soft material B:-tooth is made of hard material
C:-such gear rotates faster D:-sliding action is there between teeth
Ans: D
20:-Which of the following would enable the calculation of final drive gear ratio?
A:-crown wheel teeth and pinion gear teeth
B:-crown wheel teeth and star gear teeth
C:-pinion wheel teeth and sun gear teeth
D:-star wheel teeth and pinion gear teeth
Ans: A
21:-The type rear axle used on trucks
A:-semi floating B:-fully floating C:-three-quarter floating D:-any one of the above
Ans: B
22:-The vehicle ride will be comfortable if
A:-up-sprung weight is kept minimum B:-sprung weight is kept minimum
C:-vehicle weight is kept minimum D:-all of the above
Ans: A
23:-Which of the following is a water tube boiler?
A:-Cochran boiler B:-Locomotive boiler C:-Stirling boiler D:-None of the above
Ans: C
24:-La-Mont boiler is a
A:-Low pressure boiler B:-Fire tube boiler C:-High pressure boiler D:-None of the above
Ans: C
25:-The rate of flow of steam in case of water tube boiler as compared to fire tube boiler is
A:-Less B:-More C:-Same D:-None of the above
Ans: B
26:-The mounting on the boiler which put off fire when the level of water in the boiler is below the limit is
A:-Safety valve B:-Stop valve C:-Fusible Plug D:-Blow off cock
Ans: C
27:-A device used for raising the pressure of feed water in a boiler is
A:-Economiser B:-Feed pump C:-Super heater D:-Air preheater
Ans: B
28:-Which of the following is a boiler accessory?
A:-Safety valve B:-Stop valve C:-Fusible plug D:-Super heater
Ans: D
29:-Maximum heat loss in boiler occurs by
A:-Flue gas B:-Moisture in fuel C:-Incomplete combustion D:-None of the above
Ans: A
30:-Pumping loss in an IC engine is
A:-Power spent in complete cycle B:-Frictional power
C:-Power used in suction and exhaust stroke D:-None of the above
Ans: C
31:-Thermal efficiency of 2-stroke engine compared to a 4-stroke engine is
A:-More B:-Less C:-Equal D:-None of the above
Ans: B
32:-The compression ratio of a diesel engine compared to petrol engine is
A:-More B:-Less C:-Equal D:-None of the above
Ans: A
33:-Bernoulli's theorem deals with the law of conservation of
A:-momentum B:-energy C:-mass D:-none of the above
Ans: B
34:-Two type of fuel supply system used in SI engine are
A:-Carbureted and diesel
B:-Fuel injection and diesel
C:-Port and throttle body
D:-Fuel injection and carburattor
Ans: D
35:-In the clutch disc, the torsional vibrations is absorbed by the
A:-Splines
B:-Friction pad
C:-Coil springs
D:-Cushion springs
Ans: C
36:-The distance difference between the vehicle wheel bases from one side to the other is known as
A:-Thrust radius
B:-Wheel track
C:-Scrub radius
D:-Set back
Ans: D
37:-In throttle body injection system install the injector using new "O" rings lubricated or coated with
A:-Petrol
B:-Rubber sealent
C:-Gasket sealer
D:-Clean engine oil
Ans: D
38:-The basic control device of the carborattor is
A:-Needle valve
B:-Chock valve
C:-Throttle valve
D:-Main jet
Ans: C
39:-In mac pherson-strut suspension system the upper end of the strut is attached to the
A:-Upper arm
B:-Steering knuckle
C:-Vehicle body
D:-King pin
Ans: C
40:-To change reciprocating motion to rotary motion, the engine has
A:-Crankshaft and camshaft
B:-Piston and connecting rod
C:-Camshaft and connecting rod
D:-Connecting rod and crankshaft
Ans: D
41:-In the diesel engine, the air is compressed to a little as
A:-1/4 of its original volume
B:-1/10 of its original volume
C:-1/22 of its original volume
D:-1/50 of its original volume
Ans: C
42:-When the gear ratio through the transmission is 1 : 1, the transmission is in
A:-Over drive
B:-Direct drive
C:-Medium drive
D:-Neutral
Ans: B
43:-The least count of a steel rule is
A:-1.0 mm
B:-0.5 mm
C:-0.5 cm
D:-1.0 cm
Ans: B
44:-The mechanical speedometer, drive gear mounted on the
A:-Input shaft
B:-Clutch shaft
C:-Counter gear shaft
D:-Output shaft
Ans: D
45:-Which test is conducted to know the chemical condition of the plate of a lead acid battery ?
A:-High discharge test
B:-Open volt test
C:-Cadmium test
D:-Specific gravity test
Ans: C
46:-Another name of formula wheel is known as
A:-Pressed steel disc wheel
B:-Light alloy wheel
C:-Disc wheel
D:-Wire Wheel
Ans: B
47:-The engine valves are closed by
A:-Camshaft
B:-Rocker shaft
C:-Valve springs
D:-Tappet
Ans: C
48:-The carburattor, the fuel in the float bowl is kept at a constant level by the action of
A:-Opening of the throttle valve
B:-Fuel pump
C:-Float and needle valve
D:-Pressure regulator
Ans: C
49:-Which components help to control body roll when cornering or driving rough road.
A:-Sway bar
B:-Lower control arm
C:-Upper control arm
D:-King pin
Ans: A
50:-Any short circuit in the armature winding tested with
A:-Multimeter
B:-Ammeter
C:-Voltmeter
D:-Growler
Ans: D
A:-Burma Act B:-Madras Act C:-Bombay Act D:-Bengal Act
Ans: D
2:-Centre of gravity of a triangle lies at the point of inter section of
A:-Medians B:-Diagonals C:-Bisector of angles D:-None of the above
Ans: A
3:-Name the engine component that 'carries' the engine over its non-working strokes
A:-Piston B:-Crank shaft C:-Flywheel D:-Connecting rod
Ans: C
4:-The purpose of piston ring is to control
A:-combustion pressure B:-oil consumption C:-cylinder wall lubrication D:-all of the above
Ans: D
5:-On the rear end of the crank shaft we mount
A:-timing gear B:-flywheel C:-counter weight D:-fan pulley
Ans: B
6:-The engine valves are closed by
A:-cam shaft B:-crank shaft C:-timing gear D:-valve spring
Ans: D
7:-Cam shaft of an engine is always mounted
A:-perpendicular to the crank shaft B:-parallel to the crank shaft C:-inclined to the crank shaft D:-any one of the above
Ans: B
8:-Air-fuel ratio changes according to the operating conditions like
A:-speed B:-load C:-speed and load D:-speed, load and temperature
Ans: D
9:-Lean air-fuel mixture is required for
A:-starting B:-idling C:-acceleration D:-cruising
Ans: D
10:-The centrifugal advance mechanism provide ignition advance proportional to
A:-engine load B:-engine speed C:-both 1 and 2 D:-none of the above
Ans: B
11:-Contact breaker points are generally made of
A:-steel B:-copper C:-tungsten D:-vanadium
Ans: C
12:-In diesel engine combustion takes place at
A:-constant pressure B:-constant volume C:-constant temperature D:-none of the above
Ans: A
13:-Why a drain plug is provided in the fuel tank
A:-remove sediments B:-drain fuel C:-both 1 and 2 D:-none of the above
Ans: B
14:-The pressure plate of a clutch is mounted on the
A:-fly wheel B:-friction plate C:-crank shaft D:-clutch cover
Ans: B
15:-When clutch is engaged the spring pressure clamps the friction plate between pressure plate and
A:-flywheel B:-clutch cover C:-reaction plate D:-none of the above
Ans: A
16:-The purpose of 'double declutching' when changing down is to
A:-slow down the lay shaft B:-speed up the lay shaft C:-slow down main shaft D:-speed up the main shaft
Ans: B
17:-Speedometer is driven by the gearbox shaft called
A:-primary shaft B:-lay shaft C:-counter shaft D:-main shaft
Ans: D
18:-In the differential, the crown wheel is attached to the
A:-propeller shaft B:-bevel gear C:-bevel pinion D:-differential cage
Ans: D
19:-Hypoid gear require special lubricant because
A:-tooth is made of soft material B:-tooth is made of hard material
C:-such gear rotates faster D:-sliding action is there between teeth
Ans: D
20:-Which of the following would enable the calculation of final drive gear ratio?
A:-crown wheel teeth and pinion gear teeth
B:-crown wheel teeth and star gear teeth
C:-pinion wheel teeth and sun gear teeth
D:-star wheel teeth and pinion gear teeth
Ans: A
21:-The type rear axle used on trucks
A:-semi floating B:-fully floating C:-three-quarter floating D:-any one of the above
Ans: B
22:-The vehicle ride will be comfortable if
A:-up-sprung weight is kept minimum B:-sprung weight is kept minimum
C:-vehicle weight is kept minimum D:-all of the above
Ans: A
23:-Which of the following is a water tube boiler?
A:-Cochran boiler B:-Locomotive boiler C:-Stirling boiler D:-None of the above
Ans: C
24:-La-Mont boiler is a
A:-Low pressure boiler B:-Fire tube boiler C:-High pressure boiler D:-None of the above
Ans: C
25:-The rate of flow of steam in case of water tube boiler as compared to fire tube boiler is
A:-Less B:-More C:-Same D:-None of the above
Ans: B
26:-The mounting on the boiler which put off fire when the level of water in the boiler is below the limit is
A:-Safety valve B:-Stop valve C:-Fusible Plug D:-Blow off cock
Ans: C
27:-A device used for raising the pressure of feed water in a boiler is
A:-Economiser B:-Feed pump C:-Super heater D:-Air preheater
Ans: B
28:-Which of the following is a boiler accessory?
A:-Safety valve B:-Stop valve C:-Fusible plug D:-Super heater
Ans: D
29:-Maximum heat loss in boiler occurs by
A:-Flue gas B:-Moisture in fuel C:-Incomplete combustion D:-None of the above
Ans: A
30:-Pumping loss in an IC engine is
A:-Power spent in complete cycle B:-Frictional power
C:-Power used in suction and exhaust stroke D:-None of the above
Ans: C
31:-Thermal efficiency of 2-stroke engine compared to a 4-stroke engine is
A:-More B:-Less C:-Equal D:-None of the above
Ans: B
32:-The compression ratio of a diesel engine compared to petrol engine is
A:-More B:-Less C:-Equal D:-None of the above
Ans: A
33:-Bernoulli's theorem deals with the law of conservation of
A:-momentum B:-energy C:-mass D:-none of the above
Ans: B
34:-Two type of fuel supply system used in SI engine are
A:-Carbureted and diesel
B:-Fuel injection and diesel
C:-Port and throttle body
D:-Fuel injection and carburattor
Ans: D
35:-In the clutch disc, the torsional vibrations is absorbed by the
A:-Splines
B:-Friction pad
C:-Coil springs
D:-Cushion springs
Ans: C
36:-The distance difference between the vehicle wheel bases from one side to the other is known as
A:-Thrust radius
B:-Wheel track
C:-Scrub radius
D:-Set back
Ans: D
37:-In throttle body injection system install the injector using new "O" rings lubricated or coated with
A:-Petrol
B:-Rubber sealent
C:-Gasket sealer
D:-Clean engine oil
Ans: D
38:-The basic control device of the carborattor is
A:-Needle valve
B:-Chock valve
C:-Throttle valve
D:-Main jet
Ans: C
39:-In mac pherson-strut suspension system the upper end of the strut is attached to the
A:-Upper arm
B:-Steering knuckle
C:-Vehicle body
D:-King pin
Ans: C
40:-To change reciprocating motion to rotary motion, the engine has
A:-Crankshaft and camshaft
B:-Piston and connecting rod
C:-Camshaft and connecting rod
D:-Connecting rod and crankshaft
Ans: D
41:-In the diesel engine, the air is compressed to a little as
A:-1/4 of its original volume
B:-1/10 of its original volume
C:-1/22 of its original volume
D:-1/50 of its original volume
Ans: C
42:-When the gear ratio through the transmission is 1 : 1, the transmission is in
A:-Over drive
B:-Direct drive
C:-Medium drive
D:-Neutral
Ans: B
43:-The least count of a steel rule is
A:-1.0 mm
B:-0.5 mm
C:-0.5 cm
D:-1.0 cm
Ans: B
44:-The mechanical speedometer, drive gear mounted on the
A:-Input shaft
B:-Clutch shaft
C:-Counter gear shaft
D:-Output shaft
Ans: D
45:-Which test is conducted to know the chemical condition of the plate of a lead acid battery ?
A:-High discharge test
B:-Open volt test
C:-Cadmium test
D:-Specific gravity test
Ans: C
46:-Another name of formula wheel is known as
A:-Pressed steel disc wheel
B:-Light alloy wheel
C:-Disc wheel
D:-Wire Wheel
Ans: B
47:-The engine valves are closed by
A:-Camshaft
B:-Rocker shaft
C:-Valve springs
D:-Tappet
Ans: C
48:-The carburattor, the fuel in the float bowl is kept at a constant level by the action of
A:-Opening of the throttle valve
B:-Fuel pump
C:-Float and needle valve
D:-Pressure regulator
Ans: C
49:-Which components help to control body roll when cornering or driving rough road.
A:-Sway bar
B:-Lower control arm
C:-Upper control arm
D:-King pin
Ans: A
50:-Any short circuit in the armature winding tested with
A:-Multimeter
B:-Ammeter
C:-Voltmeter
D:-Growler
Ans: D
51:-Out of round brake drums causes the tires to wear
A:-On the side
B:-On the outer side
C:-A single spots
D:-Edges
Ans: C
52:-The primary function of lubrication is to
A:-Provide cooling effect
B:-Provide sealing effect
C:-Provide cleaning effect
D:-Reduce wear
Ans: D
53:-An indication of ignition quality of a diesel fuel is given by
A:-Detonation
B:-Octane number
C:-Cetane number
D:-Pre-ignition
Ans: C
54:-Calorific value of diesel fuel is
A:-50 MJ/KG
B:-50 KJ/KG
C:-50 J/KG
D:-50 GJ/KG
Ans: A
55:-Which type of valve are used in I.C. engines ?
A:-Sleeve valve
B:-Rotary valve
C:-Reed valve
D:-Poppet valve
Ans: D
56:-Which type of the pistons used in two stroke engines ?
A:-Flat head
B:-Concave head
C:-Domed head
D:-Irregular head
Ans: C
57:-Which are constant clearance pistons ?
A:-Steel-belted piston
B:-Slipper piston
C:-Cam ground piston
D:-Slot skirt piston
Ans: D
58:-Which type of bearings used in wheel hub ?
A:-Taper roller bearing
B:-Roller bearing
C:-Ball bearing
D:-Bush bearing
Ans: A
59:-Which type of camshaft drive mechanism is used in over head camshaft engine ?
A:-All of the above
B:-Gear drive
C:-None of the above
D:-Chain drive
Ans: D
60:-The purpose of the waste gate in the turbo charger is
A:-Produce over boost
B:-Prevent over boost
C:-Cool the air fuel mixture
D:-Heat the air fuel mixture
Ans: B
61:-Which type of water pump are used in I.C. engines ?
A:-Centrifugal pump
B:-Vane pump
C:-Gear pump
D:-Crescent pump
Ans: A
62:-Clutch dragging is noticeable at
A:-Gear shifting
B:-At low speed
C:-At high speed
D:-During acceleration
Ans: A
63:-The distance measured from some specific point on the body, frame or suspension to the ground is known as
A:-Suspension height
B:-Front end geometry
C:-Camber
D:-Caster
Ans: A
64:-Advantages of helical gear rather than spur gear in transmission is
A:-Low cost
B:-Less and thrust
C:-Economy
D:-Low noise
Ans: D
65:-In carburattor the transfer port comes into operation
A:-At maximum engine speed
B:-During slow speed operation
C:-When engine is idling
D:-After engine is turned off
Ans: B
66:-The car air conditioning system, if the compressor runs no temperature between the low pressure and high pressure line indicates
A:-Full refrigerants in the system
B:-Over charge of refrigerants in the system
C:-Normal system operation
D:-No refrigerants in the system
Ans: D
67:-The car air conditioning system the three major enemies are
A:-Gasoline, oil and electricity
B:-Moisture, dirt and air
C:-Cold weather, high altitude and humidity
D:-Hot weather, low altitude and humidity
Ans: B
68:-The function of over drive is
A:-To step up gear ratio
B:-To step down gear ratio
C:-To increase torque
D:-To reduce speed
Ans: A
69:-The ratio of height and width of the tire is known as
A:-Aspect ratio
B:-Tire type
C:-Rim diameter
D:-All of the above
Ans: A
70:-The parking brake are generally operated by
A:-Electrically
B:-Mechanically
C:-Hydraulically
D:-Air pressure
Ans: B
71:-In suspension system, the weight supported by the springs is
A:-Sprung weight
B:-Unsprung weight
C:-Vehicle weight
D:-Gross weight
Ans: A
72:-In rear wheel drive vehicle with front engine, the drive lines contains two joints, these are
A:-C V joints and U joint
B:-Slip joint and U joint
C:-Rzeppa joint and slide joint
D:-Trunnion joint and slip joint
Ans: B
73:-Which transport vehicle is used to transporting passengers over long distance and provide luxurious interior,adjustable seats ?
A:-Bus
B:-Mini bus
C:-Traveller
D:-Coach
Ans: D
74:-The function of gear box in an automobile is
A:-Vary speed
B:-Vary torque
C:-Reveres position
D:-Provide neutral position
Ans: B
75:-The longitudinal distance between the centre line of the front and rear axle is
A:-Wheel track
B:-Front over hang
C:-Wheel base
D:-Rear over hang
Ans: C
76:-The engine is mounted on front of the driver's cabin; this type of chassis is known as
A:-Conventional control
B:-Semi forward control
C:-Full forward control
D:-None of the above
Ans: A
77:-Which type of rivets are used for clutch facing are attached to the hub plate ?
A:-Steel rivets
B:-Aluminium rivets
C:-Brass rivets
D:-Steel screws
Ans: C
78:-Which type of gear box double de clutching is essential ?
A:-Clash type
B:-Constant mesh
C:-Synchromesh
D:-Selector mechanism
Ans: B
79:-As the shock absorber compressed the fluid pass through the piston orifice and
A:-Out of dust shield
B:-In to the upper part of the cylinder
C:-In to the lower part of the cylinder
D:-Out of air chamber
Ans: B
80. The advantage of both brazing and soldering is :
(A) Lower production cost
(B) Good availability of materials
(C) Less maintenance charge
(D) Many similar and dissimilar materials can be joined
Ans: D
81. The function of cross wire grooves tyre is :
(A) Better steering properties (B) Good traction
(C) Better load carrying capacity (D) Absorb shocks due to road unevenness
Ans: D
82. A Rotameter is a device used to measure :
(A) Velocity of fluid (B) Pressure of fluid
(C) Volume flow rate of fluid (D) Density of the fluid
Ans: C
83. ABS stands for :
(A) Automatic Braking System (B) Antilock Braking System
(C) Advanced Braking System (D) None of the above
Ans: B
84. Newton - meter is the unit of :
(A) Energy (B) Torque (C) Power (D) Work
Ans: B
85. The level of carbon monoxide in the exhaust gases is controlled by :
(A) Oxidization (B) Fillerization
(C) Carbonization (D) Emission control
Ans: D
86. The process in which the volume remains constant is :
(A) Isobaric process (B) Isochoric process
(C) Isothermal process (D) Isentropic process
Ans: B
87. The exhaust valves are generally made of :
(A) High carbon steel (B) Copper alloy
(C) Vanadium steel (D) Silichrome steel
Ans: D
88. The roller bearings are used in :
(A) Light load vehicle (B) Heavier load vehicle
(C) Light and heavy load vehicles (D) None of the above
Ans: D
89. The clutch facings are usually attached to the plate by :
(A) Copper screws (B) Aluminium rivets
(C) Brass rivets (D) None of these
Ans: C
90. The bottom ring on the piston is known as :
(A) Compression ring (B) Oil compression ring
(C) Grove ring (D) Slip ring
Ans: B
91. The quantity of heat produced by fuel combustion is called :
(A) Volatility (B) Anti knock value
(C) De-carbonization (D) Calorific value
Ans: D
92. The purpose of crank case ventilation is to :
(A) Remove oil from the crank case (B) Remove harmful particles from the engine
(C) Remove air from the crank case (D) All of the above
Ans: B
93. Universal joint which enables the drive shaft to transmit power at :
(A) Vertical angle (B) Parallel angle
(C) Varied angle (D) None of the above
Ans: C
94. The torque available at the contact between driving wheels and road is called :
(A) Brake effort (B) Gear effort (C) Clutch effort (D) Tractive effort
Ans: D
95. __________ type of starting motor is generally used in automobiles.
(A) Shunt motor (B) Compound motor
(C) Induction motor (D) Series motor
Ans: D
96. Which one of the following is not a part of the chassis ?
(A) Front axle (B) Chassis frame
(C) Rear axle (D) Passenger seat
Ans: D
97. The main purpose of transmission in an automobile is :
(A) To vary the power of automobile
(B) To vary the speed of the vehicle
(C) To vary the torque at the road wheels
(D) To vary the pressure at the road wheel
Ans: C
98. For loosening of cylinder head bolts we should prefer to use :
(A) Double end spanner (B) Adjustable spanner
(C) Ring spanner (D) Torque wrench
Ans: C
99:-In petrol fuel injection system, the two positions of injectors are
A:-In the cylinder and on the intake port
B:-On the two sides on the air horn
C:-The throttle body and in the intake port
D:-Intake and exhaust ports
Ans: C
100:-Which type of tool is used to tighten bolt and nut with specified torque ?
A:-Double end spanner
B:-Socket wrench
C:-Torque wrench
D:-Ring spanner
Ans: C
A:-On the side
B:-On the outer side
C:-A single spots
D:-Edges
Ans: C
52:-The primary function of lubrication is to
A:-Provide cooling effect
B:-Provide sealing effect
C:-Provide cleaning effect
D:-Reduce wear
Ans: D
53:-An indication of ignition quality of a diesel fuel is given by
A:-Detonation
B:-Octane number
C:-Cetane number
D:-Pre-ignition
Ans: C
54:-Calorific value of diesel fuel is
A:-50 MJ/KG
B:-50 KJ/KG
C:-50 J/KG
D:-50 GJ/KG
Ans: A
55:-Which type of valve are used in I.C. engines ?
A:-Sleeve valve
B:-Rotary valve
C:-Reed valve
D:-Poppet valve
Ans: D
56:-Which type of the pistons used in two stroke engines ?
A:-Flat head
B:-Concave head
C:-Domed head
D:-Irregular head
Ans: C
57:-Which are constant clearance pistons ?
A:-Steel-belted piston
B:-Slipper piston
C:-Cam ground piston
D:-Slot skirt piston
Ans: D
58:-Which type of bearings used in wheel hub ?
A:-Taper roller bearing
B:-Roller bearing
C:-Ball bearing
D:-Bush bearing
Ans: A
59:-Which type of camshaft drive mechanism is used in over head camshaft engine ?
A:-All of the above
B:-Gear drive
C:-None of the above
D:-Chain drive
Ans: D
60:-The purpose of the waste gate in the turbo charger is
A:-Produce over boost
B:-Prevent over boost
C:-Cool the air fuel mixture
D:-Heat the air fuel mixture
Ans: B
61:-Which type of water pump are used in I.C. engines ?
A:-Centrifugal pump
B:-Vane pump
C:-Gear pump
D:-Crescent pump
Ans: A
62:-Clutch dragging is noticeable at
A:-Gear shifting
B:-At low speed
C:-At high speed
D:-During acceleration
Ans: A
63:-The distance measured from some specific point on the body, frame or suspension to the ground is known as
A:-Suspension height
B:-Front end geometry
C:-Camber
D:-Caster
Ans: A
64:-Advantages of helical gear rather than spur gear in transmission is
A:-Low cost
B:-Less and thrust
C:-Economy
D:-Low noise
Ans: D
65:-In carburattor the transfer port comes into operation
A:-At maximum engine speed
B:-During slow speed operation
C:-When engine is idling
D:-After engine is turned off
Ans: B
66:-The car air conditioning system, if the compressor runs no temperature between the low pressure and high pressure line indicates
A:-Full refrigerants in the system
B:-Over charge of refrigerants in the system
C:-Normal system operation
D:-No refrigerants in the system
Ans: D
67:-The car air conditioning system the three major enemies are
A:-Gasoline, oil and electricity
B:-Moisture, dirt and air
C:-Cold weather, high altitude and humidity
D:-Hot weather, low altitude and humidity
Ans: B
68:-The function of over drive is
A:-To step up gear ratio
B:-To step down gear ratio
C:-To increase torque
D:-To reduce speed
Ans: A
69:-The ratio of height and width of the tire is known as
A:-Aspect ratio
B:-Tire type
C:-Rim diameter
D:-All of the above
Ans: A
70:-The parking brake are generally operated by
A:-Electrically
B:-Mechanically
C:-Hydraulically
D:-Air pressure
Ans: B
71:-In suspension system, the weight supported by the springs is
A:-Sprung weight
B:-Unsprung weight
C:-Vehicle weight
D:-Gross weight
Ans: A
72:-In rear wheel drive vehicle with front engine, the drive lines contains two joints, these are
A:-C V joints and U joint
B:-Slip joint and U joint
C:-Rzeppa joint and slide joint
D:-Trunnion joint and slip joint
Ans: B
73:-Which transport vehicle is used to transporting passengers over long distance and provide luxurious interior,adjustable seats ?
A:-Bus
B:-Mini bus
C:-Traveller
D:-Coach
Ans: D
74:-The function of gear box in an automobile is
A:-Vary speed
B:-Vary torque
C:-Reveres position
D:-Provide neutral position
Ans: B
75:-The longitudinal distance between the centre line of the front and rear axle is
A:-Wheel track
B:-Front over hang
C:-Wheel base
D:-Rear over hang
Ans: C
76:-The engine is mounted on front of the driver's cabin; this type of chassis is known as
A:-Conventional control
B:-Semi forward control
C:-Full forward control
D:-None of the above
Ans: A
77:-Which type of rivets are used for clutch facing are attached to the hub plate ?
A:-Steel rivets
B:-Aluminium rivets
C:-Brass rivets
D:-Steel screws
Ans: C
78:-Which type of gear box double de clutching is essential ?
A:-Clash type
B:-Constant mesh
C:-Synchromesh
D:-Selector mechanism
Ans: B
79:-As the shock absorber compressed the fluid pass through the piston orifice and
A:-Out of dust shield
B:-In to the upper part of the cylinder
C:-In to the lower part of the cylinder
D:-Out of air chamber
Ans: B
80. The advantage of both brazing and soldering is :
(A) Lower production cost
(B) Good availability of materials
(C) Less maintenance charge
(D) Many similar and dissimilar materials can be joined
Ans: D
81. The function of cross wire grooves tyre is :
(A) Better steering properties (B) Good traction
(C) Better load carrying capacity (D) Absorb shocks due to road unevenness
Ans: D
82. A Rotameter is a device used to measure :
(A) Velocity of fluid (B) Pressure of fluid
(C) Volume flow rate of fluid (D) Density of the fluid
Ans: C
83. ABS stands for :
(A) Automatic Braking System (B) Antilock Braking System
(C) Advanced Braking System (D) None of the above
Ans: B
84. Newton - meter is the unit of :
(A) Energy (B) Torque (C) Power (D) Work
Ans: B
85. The level of carbon monoxide in the exhaust gases is controlled by :
(A) Oxidization (B) Fillerization
(C) Carbonization (D) Emission control
Ans: D
86. The process in which the volume remains constant is :
(A) Isobaric process (B) Isochoric process
(C) Isothermal process (D) Isentropic process
Ans: B
87. The exhaust valves are generally made of :
(A) High carbon steel (B) Copper alloy
(C) Vanadium steel (D) Silichrome steel
Ans: D
88. The roller bearings are used in :
(A) Light load vehicle (B) Heavier load vehicle
(C) Light and heavy load vehicles (D) None of the above
Ans: D
89. The clutch facings are usually attached to the plate by :
(A) Copper screws (B) Aluminium rivets
(C) Brass rivets (D) None of these
Ans: C
90. The bottom ring on the piston is known as :
(A) Compression ring (B) Oil compression ring
(C) Grove ring (D) Slip ring
Ans: B
91. The quantity of heat produced by fuel combustion is called :
(A) Volatility (B) Anti knock value
(C) De-carbonization (D) Calorific value
Ans: D
92. The purpose of crank case ventilation is to :
(A) Remove oil from the crank case (B) Remove harmful particles from the engine
(C) Remove air from the crank case (D) All of the above
Ans: B
93. Universal joint which enables the drive shaft to transmit power at :
(A) Vertical angle (B) Parallel angle
(C) Varied angle (D) None of the above
Ans: C
94. The torque available at the contact between driving wheels and road is called :
(A) Brake effort (B) Gear effort (C) Clutch effort (D) Tractive effort
Ans: D
95. __________ type of starting motor is generally used in automobiles.
(A) Shunt motor (B) Compound motor
(C) Induction motor (D) Series motor
Ans: D
96. Which one of the following is not a part of the chassis ?
(A) Front axle (B) Chassis frame
(C) Rear axle (D) Passenger seat
Ans: D
97. The main purpose of transmission in an automobile is :
(A) To vary the power of automobile
(B) To vary the speed of the vehicle
(C) To vary the torque at the road wheels
(D) To vary the pressure at the road wheel
Ans: C
98. For loosening of cylinder head bolts we should prefer to use :
(A) Double end spanner (B) Adjustable spanner
(C) Ring spanner (D) Torque wrench
Ans: C
99:-In petrol fuel injection system, the two positions of injectors are
A:-In the cylinder and on the intake port
B:-On the two sides on the air horn
C:-The throttle body and in the intake port
D:-Intake and exhaust ports
Ans: C
100:-Which type of tool is used to tighten bolt and nut with specified torque ?
A:-Double end spanner
B:-Socket wrench
C:-Torque wrench
D:-Ring spanner
Ans: C