MCQ 1 The condition that causes vapour locking in a brake system is

(A) an excessively high engine speed on a downhill road (B) overcooling of the brakes during high speed driving (C) keeping the vehicle without use for an extended period (D) overheating of the fluid due to frequent brake application

MCQ 2 The portion of a crankshaft which rests on cylinder block is called main journal.

(A) Yes (B) No (C) Can't say (D) None of the above

MCQ 3 A baffle plate is fitted inside the oil pan to prevent the oil from splashing when it is subjected to vibration and other movement during vehicle operation.

(A) Can't say (B) False (C) True (D) None of the above

MCQ 4 The motion of the cam is transferred to the valves through

(A) Rocker arms (B) Camshaft pulley (C) Pistons (D) Valve stems

MCQ 5 Which of the following symptom is caused as a result of brake disc run out ?

(A) Localized wearing of the brake pads (B) Rapid wearing of the brake pads (C) Ineffectiveness of the brakes (D) Judder during braking

MCQ 6 If the engine coolant leaks into the engine oil, then engine oil

(A) appears milky (B) turns black (C) becomes foamy (D) none of these

MCQ 7 The function of an alternator in an automobile is to

(A) supply electric power (B) continually recharge the battery (C) convert mechanical energy into electrical energy (D) partly convert engine power into electric power

MCQ 8 A clutch is usually designed to transmit maximum torque which is

(A) equal to the maximum engine torque (B) 80 per cent of the maximum engine torque (C) 150 per cent of the maximum engine torque (D) None of the above

MCQ 9 What type of bearing is used for main bearings and connecting rod bearings ?

(A) Taper roller bearing (B) Ballbearings (C) Plain bearings (D) Needle roller bearing

MCQ 10 It is necessary to maintain the valve clearances as they

(A) allow for lengthening of the valves owing to the heat of combustion (B) make the crankshaft turn smoothly (C) reduce the resistance to sliding that occurs between the cam and the tappet (D) increase the speed at which the valves move up and down

MCQ 11 Incorrect steering axis inclination (S.A.I.) causes

(A) generation of a braking effect at tight corners (B) the vehicle to pull to the side of lesser inclination (C) tendency to assume toe-out orientation (D) poor recovery of the steering wheel after making a turn

MCQ 12 In a unit type body (frameless body) design, the sheet metal parts are welded together, forming a frame work to which outer skin is attached.

(A) True (B) False (C) Can't say (D) None is correct

MCQ 13 The torque available at the contact between driving wheels and road is known as

(A) clutch effort (B) tractive effort (C) brake effort (D) None of these

MCQ 14 A traction control system (TCS) in automobiles controls the

(A) engine power during acceleration (B) stopping distance in case of emergency (C) vibrations on the steering wheel (D) torque that is transmitted by the tyres to the road surface

MCQ 15 In radial tyres

(A) all plies run parallel to one another and vertical to tyre bead (B) inner tubes are always used (C) one ply layer runs diagonally one way and another layer runs diagonally the other way (D) None of the above

MCQ 16 The oil pump is driven by the

(A) crankshaft directly (B) camshaft (C) alternator shaft (D) crankshaft via drive belt

MCQ 17 In a spark plug, when the temperature of the central electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off carbon starts is referred to as the self cleaning temperature.

(A) Can't say (B) Correct (C) Incorrect (D) None of the above

MCQ 18 The flywheel and the pressure plate bind the clutch disc between them so that the engine and the transmission can be engaged.

(A) Yes (B) No (C) Can't Say (D) None is correct

MCQ 19 The vehicle ride will be comfortable if

(A) sprang mass is kept minimum (B) vehicle mass is kept minimum (C) unsprung mass is kept minimum (D) None of the above

MCQ 20 The main function of intake manifold is that it

(A) reduces intake noise (B) distributes intake air equally to the cylinders (C) promotes the mixture of air and fuel (D) cools the intake air to a suitable temperature

MCQ 21 Positive camber is used to compensate for wheels tilting inward due to the weight of the vehicle.

(A) Yes (B) No (C) Can't say (D) None of the above

MCQ 22 In automobiles G.V.W. refers to

(A) gross vehicle weight (B) gross vehicle wheel base (C) gross vehicle wheel track (D) gross vehicle width

MCQ 23 The firing order for an in-line four cylinder I.C. engine is

(A) 1 − 3 − 2 − 4 (B) 1 − 2 − 4 − 3 (C) 1 − 2 − 3 − 4 (D) 1 − 3 − 4 − 2

MCQ 24 In a ventilated disc brake,

(A) disc contains many small holes for optimum cooling performance (B) disc contains radial vanes between its rubbing surfaces for optimum cooling performance (C) a duct directs air towards the caliper for cooling while the vehicle is moving (D) caliper is covered with cooling fins

MCQ 25 The effect of having excess camber is

(A) too much traction (B) uneven tyre wear (C) excessive steering alignment torque (D) hard steering

MCQ 26 If the air-fuel mixture in a spark ignition engine is too rich, then air-fuel ratio is about

(A) 13:1 (B) 17:1 (C) 10:1 (D) 15:1