Subject Name with code: Automobile Engineering {2181915} MCQ
1) Leaf springs absorb shocks by a) bending b) twisting c) compression d) tension
2) Coil springs absorb shocks by a) bending b) twisting c) compression d) tension
3) The following is a type of leaf springs a) three Quarter elliptic b) semi elliptic c) quarter elliptic d) all of the above
4) The material used for making torsion bar is a) Steel b) Cast iron c) High carbon steel d) All of the above
5) Drive (live) axles a) are simply beams which supports the vehicle weight b) are usually the front axles c) contain differential d) all of the above
6) The following represents the correct specification of a tyre a) 155-80-R-13 b) R-155-80-13 c) 155-80-13-R d) 155-R-80-13
Prepared By: Dr. Vipul M. Patel 7) The following is (are) the independent suspension system(s) a) Wishbone Arm system b) Trailing Link system c) Sliding Pillar system d) all of the above
8) The coil spring in used in a) Wishbone Arm system b) Trailing Link system c) Sliding Pillar system d) all of the above
9) Un-sprung weight is a) Weigh of vehicle b) Weigh of chassis frame c) Weight of wheels d) Weight of wheels and axles
10) Sprung weight is a) Weigh of vehicle minus unsprung weight b) Weigh of chassis frame c) Weight of wheels d) Weight of wheels and axles
11) While in motion, the vehicle suspension is subjected to a) bouncing b) pitching c) rolling d) all of the above
12) The angle between king pin centre line and vertical in the plane of wheel is called a) Steering axis inclination b) King pin inclination c) Castor d) Camber 13) 50-The ratio between BHP and IHP is called a) thermal efficiency b) engine efficiency c) volumetric efficiency d) mechanical efficiency
Prepared By: Dr. Vipul M. Patel 14) Useful power obtained at the engine flywheel is called: a) Indicated power b) Frictional power c) Mechanical advantage d) Brake power3
15) Wear on tyre is more on one side is due to: a) incorrect camber angle b) low tyre pressure c) high tyre pressure d) sudden acceleration
16) In Battery coil ignition system, the correct sequence of flow of current is a) Battery – Ammeter – Ignition coil – Distributor – Spark plug b) Battery – Ignition coil – Ammeter – Distributor – Spark plug c) Battery – Ammeter – Distributor – Ignition coil – Spark plug d) Battery – Distributor – Ammeter – Ignition coil – Spark plug
17) In Magneto Ignition system a) No battery is required b) Engine starting is rather difficult c) used in high speed engines d) All of the above
18) In four cylinder in-line engine, the probable firing order is a) 1-3-4-2 b) 1-2-3-4 c) 2-4-1-3 d) 2-1-3-4
19) The following is (are) the advantage(s) of Electronic Ignition system a) Produces maximum output voltage b) Better starting with cold engine c) Less possibility of arcing at spark plug d) All of the above
Prepared By: Dr. Vipul M. Patel 20) What part of a car holds the electricity? a) Alternator b) Generator c) Battery d) Solenoid
21) The battery is made of lead, water and a) Paint b) Battery fluid c) Sulfuric acid d) Gasoline
22) Two general types of tyres are a) Tube type and tubeless b) Solid and tubeless c) Air and pneumatic d) Split rim and drop centre
23) How many cells are used in a 12 volt car battery? a) 2 b) 4 c) 6 d) 8
24) The advantage of a tubeless tyre over tube type tyre is a) Slow air leakage b) Better fuel efficiency c) Less chances of running flat d) All of these
25) In a single dry plate clutch, torsional vibrations are absorbed by a) Coil springs known as torsional springs b) Cushion springs c) Central hub d) Clutch pedal
Prepared By: Dr. Vipul M. Patel 26) The battery is an electrochemical device, which means battery a) Makes chemicals by mechanical means b) Uses chemical action to provide electricity c) Has curved plates instead of flat plates d) Does not use an electrolyte
27) An overinflated tyre will wear the tread most near the a) Edge b) corner c) centre d) none of these
28) The following is not a Friction clutch a) Fluid clutch b) Centrifugal clutch c) Cone clutch d) Disc clutch
29) The following type of arrangement is used in synchromesh type gear box a) Single plate clutch b) Fluid clutch c) Dog clutch d) Semi-centrifugal clutch
30) The torque which a clutch can transmit, depends upon the a) coefficient of friction b) spring force c) contact surfaces d) all of the above
31) In Disc clutch, the clutch disc acts as a a) driving member b) driven member c) neutral member d) any of the above
Prepared By: Dr. Vipul M. Patel 32) In Disc clutch, engine flywheel acts as a a) driving plate b) driven plate c) pressure plate d) none of the above
33) The following type of spring(s) is (are) employed in the pressure plate a) Coil springs b) Diaphragm type conical spring c) both (A) and (B) d) none of the above
34) The following is an automatic clutch which is controlled by engine speed a) Cone clutch b) Centrifugal clutch c) fluid clutch d) Disc clutch
35) The following is (are) the advantage(s) of fluid flywheel a) It gives a smoother power take up than centrifugal type b) fluid acts as a cushioning agent c) it needs no separate pedal or lever to operate it d) all of the above
36) Which of the following is true? a) high torque is required at the start of the vehicle b) low torque is required at high speeds c) gearbox helps in smooth running of vehicle d) all of the above
37) The amount of tilt measured in degrees from the vertical, is called a) Camber angle b) Caster angle c) Toe in d) Toe out
Prepared By: Dr. Vipul M. Patel 38) The purpose of caster is to give a trailing effect to the a) Front wheel b) Rear wheel c) Inner wheel d) Outer wheel
39) Four-wheel drive vehicles have differential at a) front wheels b) rear wheels c) both the front and rear wheels d) any of the front or rear wheels
40) The propeller shaft consist of a) knuckle joint b) flange coupling c) universal joint d) Rag joint
41) The positive plates of a lead acid battery has a) Lead peroxide (PbO2) b) Spongy lead (Pb) c) Lead sulphate (PbSO4) d) Sulphuric acid (H2SO4)
42) The rigid suspension is beneficial when a) It is desired to reduce the unsprung mass b) It is desired to have more flexibility in design c) It is desired to improve tyre to ground contact characteristics d) Large changes in load make it necessary to have a large suspension stroke
43) The basic purpose of tyres is to a) Grip the road and provide good traction b) Substitute for springs c) Act as brake d) None of these
Prepared By: Dr. Vipul M. Patel 44) The clutch is located between the transmission and the a) Engine b) Rear axle c) Propeller shaft d) Differential
45) The main function of the tread pattern on tyre is that a) The tread grooves pass air between the tyre and road surface, thereby preventing tyre from overheating b) The crests between the tread grooves absorb road noise c) In wet conditions, the tread grooves expel water that is drawn between the tyre and road surface d) The tread pattern protects the tyre's inner carcass from small stones and pieces of glass
46) The main function of the brake fluid is a) Lubrication b) Power transmission c) Cooling d) None of these
47) The discharged lead acid battery has on its plates a) Lead peroxide (PbO2) b) Spongy lead (Pb) c) Lead sulphate (PbSO4) d) Sulphuric acid (H2SO4)
48) The service brakes employed in cars are generally operated a) Mechanically b) Hydraulically c) Pneumatically d) None of These
49) The caster is called positive when the top of the king pin is inclined to the a) Rear of the vehicle b) Front of the vehicle c) Left of the vehicle d) Right of the vehicle
Prepared By: Dr. Vipul M. Patel 50) Caster is a a) Forward tilt of the kingpin b) Backward tilt of the kingpin c) Either 'A' or 'B' d) None of these
51) The order in which effort applied to the steering wheel is transferred to the front wheel is a) Steering wheel, steering gearbox, steering shaft, tie rod, steering knuckle, front wheels b) Steering wheel, steering shaft, steering gearbox, tie rod, steering knuckle, front wheels c) Steering wheel, steering shaft, steering gearbox, steering knuckle, tie rod, front wheels d) Steering wheel, tie rod, steering gearbox, steering shaft, steering knuckle, front wheels
52) The basic purpose of tyre rotation on automobiles is to a) Avoid ply separation b) Equalize wear c) Get better ride d) None of these
53) The specific gravity of acid in a fully charged battery is generally a) 1.00 b) 1.28 c) 2.81 d)1.82
54) If a tyre is designated as 175/65 R-14 82-S, then the aspect ratio for the tyre is a) 175 b) 65 c) 14 d) 82
55) Incorrect steering axis inclination (S.A.I.) causes a) Tendency to assume toe-out orientation b) Generation of a braking effect at tight corners c) Poor recovery of the steering wheel after making a turn d) The vehicle to pull to the side of lesser inclination
Prepared By: Dr. Vipul M. Patel 56) Cushioning springs in clutch plate reduces a) Vehicle speed b) Torsional vibrations c) Jerky starts d) None of these
57) The brake pedal during ABS operation a) Is pushed upward forcefully b) Pedal stroke becomes longer c) Transmits slight kickback to the driver's foot d) All of the above
58) The basic function of the suspension is to a) Absorbs vibration and impact forces from the road surface b) Ensure that the steering wheel can deliver a suitable amount of steering force c) Ensure that wheel alignment is not disturbed during driving d) Automatically correct the effects of over steering
59) Which of the following is not a part of the chassis? a) Wheels b) Front axle c) Steering system d) Seats
60) The component that is responsible for converting the rotation of the steering wheel into lateral motion is the a) Steering wheel b) Steering shaft c) Steering gearbox d) Tie rod
61) The operation of removing trapped air from the hydraulic braking system is known as a) Trapping b) Tapping c) Bleeding d) Cleaning
Prepared By: Dr. Vipul M. Patel 62) A maintenance free battery a) Has lead-antimony plate grid b) Has lead-calcium plate grid c) Does not contain acid d) Does not contain water
63) The function of anti-lock brake system (ABS) is that is a) it reduces the brake pad wear b) it reduces the stopping distance c) it avoids the skidding of the vehicle d) it reduces cost of braking system
64) Which types of wheels cannot be used with a tubeless tire? a) Disc wheel b) Light alloy wheel c) Wire wheel d) Composite wheel
65) Which type of wheels is preferred in sports cars? a) Disc wheel b) Wire wheel c) Magnesium alloy wheel d) Aluminum alloy wheel
66) Which of the following contains no linkage between the clutch and the pedal? a) Clutch – by – wire b) Wet clutch c) Hydraulic single plate clutch d) Hydraulic multi-plate clutch
67) Where is the clutch located? a) Between transmission and engine b) Between transmission and rear axle c) Between transmission and propeller shaft d) Between transmission and differential
Prepared By: Dr. Vipul M. Patel 68) Which of the following is the disadvantage of the cone clutch? a) It becomes difficult to disengage the clutch when the cone angle is less than 20° b) It is silent in operation c) The normal force on the contact surface is larger than the axial force d) Same torque can be transmitted for the same size as the plate clutch
69) The dry clutch can tolerate longer engagement time than a wet clutch. a) True b) False
70) Which of the following is the need of the gearbox? a) To vary the speed of the vehicle b) To vary the torque of the vehicle c) To vary the power of the vehicle d) To vary the acceleration of the vehicle
71) In which type of manual transmission the double-declutching is used? a) Constant-mesh gearbox b) Sliding mesh gearbox c) Synchromesh gearbox d) Epicyclical gearbox
72) Which of the following is not part of automatic transmission? a) Epicyclic gearbox b) Torque convertor c) Multi-plate clutch d) Sliding mesh gearbox
73) Which types of gears are used in constant mesh gearbox? a) Spur gear b) Helical gear c) Bevel gear d) Worm gear
74) Why are the helical gears used commonly in transmission over spur gears? a) Low cost and high strength b) Low noise level and high strength c) Low noise level and economy d) Low noise level and low cost
Prepared By: Dr. Vipul M. Patel 75) Which types of joints are used when the shafts are inclined? a) Universal joint b) Hinge joint c) Ball and socket joint d) Pivot joint
76) Which of the following is the disadvantage of the open differential? a) High in cost b) Not reliable c) Complex design d) Sends most of the power to the wheel having less traction
77) Where is the differential located? a) Between transmission and rear axle b) Between engine and transmission c) Between two propeller shaft d) Between steering wheel and steering column
78) What is the need of the universal joint? a) To change inclination b) To bend sideways c) To transfer torque at an angle d) To change length
79) A two-piece propeller shaft requires one universal joint. a) True b) False
80) If the front of the front wheels is inside and rear of front wheels are apart when the vehicle is at rest, then the configuration is called? a) Toe-in b) Toe out c) Positive camber d) Positive castor.
81) What is the name of the angle through which the wheel has to turn to sustain the side force? a) Slip angle b) Castor angle c) Camber d) Kingpin inclination
Prepared By: Dr. Vipul M. Patel 82) What is called the cornering force over the slip angle? a) Castor trail b) Cornering power c) Self-righting torque d) Pneumatic trail
83) What is a condition called when the vehicle will try to move away from its normal direction and to keep it on the right path there is need to steer a little? a) Understeer b) Oversteer c) Reversibility d) Irreversibility
84) What is the purpose of the reciprocating ball type steering gear? a) To reduce the operating cost b) To reduce the number of parts c) To reduce the operating friction d) To reduce the toe-out during the turns
85) In a disc brake, which component provides the pad-to-disc adjustment? a) Bleed screw b) Piston c) Caliper d) Piston seal
86) Generally which brakes are on the front wheels? a) Drum brake b) Disc brake c) Shoe brake d) Double shoe brake
87) Which instrument is used for adjusting the ignition timing? a) Accurate clock b) Tachometer c) Stopwatch d) Stroboscopic light
88) What is running resistance of the vehicle? a) Rolling resistance b) Aerodynamic resistance c) Sum of rolling and aerodynamic resistance d) Traction force
Prepared By: Dr. Vipul M. Patel 89) Suppose the road gradient is G = 10%. What is the corresponding angle (approximate value in radians)? a) 5 rad b) 0.1 rad c) 1 rad d) 10 rad
90) What will happen if the traction force is negative? a) The vehicle will accelerate b) The vehicle will decelerate c) The vehicle will first accelerate and then decelerate d) The vehicle will run at a constant speed
91) Suppose the vehicle is running at a constant speed on the flat road with rolling resistance = 100 N and aerodynamic resistance = 100 N, what is the traction force required? a) 100 N b) 0 N c) 200 N d) 50 N
92) What will happen if the vehicle is made 50% heavier, but all other parameters remain the same? a) The running resistance will decrease b) The running resistance will increase c) The running resistance will remain the same d) The aerodynamic resistance will increase by a factor of 1.5 squared
93) If the traction resistance is equal to the total running resistance, then which of the following will happen? a) The vehicle will accelerate b) The vehicle will decelerate c) The vehicle will run at a constant velocity d) The vehicle will come to rest
94) If the vehicle is running on the road having 10% gradient at a constant speed, then on flat road it will accelerate at approximately 1 m/s2 (All the parameters remain the same). a) True b) False
Prepared By: Dr. Vipul M. Patel 95) Which of the following is the knock sensor? a) Flap type sensor b) Thermocouples c) Thermistors d) Piezoelectric pickup
96) What is the use of the lambda sensors in the catalytic converter? a) To keep excess air ratio within a range b) To keep the flow rate of constant air c) To keep the exhaust pressure constant d) To keep the exhaust temperature constant
97) Where are the electro-optical sensors used? a) Position and speed measurement b) Piston temperature measurement c) Cooling water flow measurement d) Lubricating oil flow measurement
98) What is the main use of the strain gauge? a) To measure viscosity b) To measure velocity c) To measure temperature d) To measure pressure
99) What is the use of the hot-wire sensor? a) To measure temperature b) To measure the smoke intensity c) To measure the mass flow rate d) To measure pressure
100) What is the disadvantage of the piezoelectric pressure sensor? a) It has too much sensitivity b) It can measure only low pressure c) It is not suitable for dynamic measurement d) It can only give pressure difference
Prepared By: Dr. Vipul M. Patel 101) What is LVDT used to measure? a) Gas temperature b) Engine speed c) Crank angle d) Large displacement
102) Which of the following is the best method to measure the speed? a) Mechanical tachometer b) Electrical tachometer c) Magnetic pickup d) Mechanical counters
103) Which of the following is the most accurate method of determining friction power? a) Morse test b) Willian’s line c) Motoring test d) Measurement of brake and indicated power
104) Which of the following is the most accurate dynamometer? a) Eddy current dynamometer b) Prony brake dynamometer c) Hydraulic type dynamometer d) Swinging field type dynamometer
105) On which of the following does brake mean effective pressure (BMEP) in an engine depend upon? a) Speed and torque b) Speed and power c) Torque d) Speed
106) What should a fully-charged 6 cell automotive battery indicate? a) 12 V b) 12.6 V c) The specific gravity of 1.29 at 32℃ d) 12.6 V and the specific gravity of 1.29 at 32℃
Prepared By: Dr. Vipul M. Patel 107) What is the number of positive plates in a battery cell? a) One more than the negative plates b) Two less than the negative plates c) One less than the negative plates d) Two more than the negative plates
108) What is a maintenance-free battery? a) A battery having lead-antimony plate grid b) A battery having lead-calcium plate grid c) A battery does not contain acid d) A battery does not contain water
109) Which of the following is the advantage of alkaline battery? a) High energy density b) Good discharge characteristics over a wide range of temperature c) The specific gravity of electrolyte remains the same d) Cheap raw materials are used
110) Which component in the DC generator produces a magnetic field? a) Stator b) Commutator c) Armature d) Carbon brushes
111) Which component in alternator produces a magnetic field? a) Frame b) Stator c) Regulator d) Rotor
112) At the start of the engine, the charging voltage is ______a) Lower b) Higher c) Same d) Zero
113) In an alternator, which component controls the output? a) Voltage regulator b) Cutout relay c) Current regulator d) Diode
Prepared By: Dr. Vipul M. Patel 114) What is the material of an alternator frame? a) Cast iron b) Brass c) Copper d) Aluminum
115) If the lead-acid cell has a total of 17 cells, then what is the number of positive plates? a) 9 b) 8 c) 7 d) 6
116) Field coils in a generator produce permanent magnet. a) True b) False
117) A conventional suspension system uses which of these a) Leaf Springs b) Coil Springs c) Torsion bars d) None of the mentioned
118) Load per axle for a vehicle can be reduced by which of the following methods. a) By increasing distance between the axles b) By increasing the number of tyres c) By increasing the number of axles d) By decreasing the length of an axle
119) The transmission system transmits ______from engine to wheels. a) Speed b) Power c) Current d) Pressure
120) Which of the following is not a part of the transmission system a) Clutch b) Axles c) Wheels d) Gear box
Prepared By: Dr. Vipul M. Patel 121) The loads supported by an automobile frame are a) Weight of the body, passengers and cargo loads b) Torque from engine and transmission c) Sudden impacts from collisions d) All of the mentioned
122) An automobile chassis does not include which one of the following parts a) Shock absorbers b) Steering system c) Differential d) Brakes
123) The electrical system of an automobile contains which of the following a) Battery b) Alternators c) Lighting systems d) All of the mentioned
124) Which of these were or are used in automobiles to provide suspension. a) Leaf springs b) Coil springs c) Torsion bars d) All of the mentioned
125) The lid that covers the engine top in a car and situated at the front is called ______a) Gill b) Soft top c) Bonnet d) Spoiler
126) An upraised part on the hood which directs the air flow into the engine compartment is called a) Spoiler b) Hotpipe c) Hood scoop d) Wings
Prepared By: Dr. Vipul M. Patel 127) Why ‘Bumpers’ are used in cars a) To reduce the impact in case of low speed collisions b) To improve the aerodynamics of a car c) To increase the engine performance d) None of the mentioned
128) The central portion of the wheel is called a) Rim b) Scale c) Hub d) Axle
129) Group A ------Group B (1) Short duration load------(A) Beyond design capacity (2) Impact load------(B) While crossing a broken patch (3) Inertia Load------(C) While applying brakes (4) Static Load------(D) Due to collision of vehicle (5) Over Load------(E) Due to chassis parts
Option: a) (1)-(E), (2)-(B), (3)-(D), (4)-(C), (5)-(A) b) (1)-(E), (2)-(D), (3)-(C), (4)-(B), (5)-(A) c) (1)-(B), (2)-(D), (3)-(C), (4)-(E), (5)-(A) d) (1)-(B), (2)-(A), (3)-(D), (4)-(E), (5)-(C)
130) The advantage of a tubeless tyre over tube type tyre is a) Slow air leakage b) Better fuel efficiency c) Less chances of running flat d) All of these
131) The brake pedal during ABS operation a) Is pushed upward forcefully b) Pedal stroke becomes longer c) Transmits slight kickback to the driver's foot d) Transmits slight kickback to the driver's foot
Prepared By: Dr. Vipul M. Patel