Q.1

The minimum parking brake force is generally __________ of gross vehicle mass (GVM).

  • 5%
  • 10%
  • 15%
  • 20%
Q.2

The main merit of a multi-cylinder type cylinder sleeve is

  • smaller engine dimensions
  • better cooling efficiency
  • high rigidity
  • none of these
Q.3

An engine has a clearance volume ofcm3 and a swept volume ofcm3. The compression ratio is

  • 7:1
  • 8:1
  • 9:1
  • 10:1
Q.4

The Diesel engines as compared to petrol engines require

  • bigger flywheel
  • smaller flywheel
  • same size of flywheel
  • no flywheel
Q.5

In Diesel engines, during suction stroke, __________ is drawn in the cylinder.

  • air and fuel
  • only fuel
  • only air
  • none of these
Q.6

The specific gravity of petrol is about

  • 0.75
  • 0.85
  • 0.95
  • 1.25
Q.7

The power source for a brake booster is

  • exhaust manifold pressure
  • electricity
  • the pressure difference between the atmospheric pressure and the vaccum pressure in the intake manifold
  • hydraulic pump
Q.8

In Diesel engines, the duration between the time of injection and the time of ignition is called

  • spill cut-off
  • delay period
  • injection period
  • ignition period
Q.9

The engine oil level should be checked

  • immediately after the ignition switch is turned off
  • while the engine is running
  • a few minutes after the ignition switch is turned off
  • while the engine is running at high-idle speed
Q.10

The component of the oil filter that prevents the passage of metal particles and sludge is

  • element
  • relief valve
  • check valve
  • case
Q.11

An over-inflated tyre will wear the tread most near the

  • edges
  • corners
  • centre
  • none of these
Q.12

Which of the following oil is more viscous ?

  • SAE 30
  • SAE 40
  • SAE 70
  • SAE 80
Q.13

Bead wires are made of

  • steel
  • copper
  • zinc
  • aluminium
Q.14

Toe-in ensures parallel rolling of the wheel thus stabilizing steering in addition to preventing both sides slipping and excessive tyre wear.

  • Correct
  • Incorrect
Q.15

The valve tappet clearance is measured by

  • screw pitch gauge
  • engineering scale
  • feeler gauge
  • vernier caliper
Q.16

In a forced feed lubrication system, the device used to guard against excessive oil pressure, is known as

  • release chamber
  • balancer
  • relief valve
  • stop valve
Q.17

The formula for Iso-octane is

  • C8H18
  • C7H17
  • C6H18
  • C7H18
Q.18

The clutch is located between the transmission and the

  • engine
  • rear axle
  • propeller shaft
  • differential
Q.19

The Diesel engines are also known as

  • spark ignition (S.I.) engines
  • compression ignition (C.I.) engines
  • steam engines
  • none of these
Q.20

The negative terminal post on the top of a battery is

  • smaller than the positive terminal post
  • larger than the positive terminal post
  • of the same size as the positive terminal post
  • none of these
Q.21

In a four cylinder in-line engine, the number of firing strokes in one revolution of the crank is

  • 1
  • 2
  • 3
  • 4
Q.22

Which one of the following statements correctly describes the construction of a planetary gear type differential ?

  • The six planetary pinions rotate in constant mesh with the internal gears.
  • One drive shaft is splined to the central gear and the other to the planetary gear.
  • Each planetary pinion gear meshes with both the central gear and the internal gear.
  • The internal gear is fixed to the planetary gear.
Q.23

Cushioning springs in clutch plate reduces

  • vehicle speed
  • torsional vibrations
  • jerky starts
  • none of these
Q.24

Odometer is an instrument used for measurement of

  • power
  • fuel consumption
  • engine r.p.m.
  • distance
Q.25

The condition that results in large quantities of HC emission is

  • high temperature combustion
  • incomplete combustion
  • low temperature combustion
  • high atmospheric temperature combustion
Q.26

The seat belt tensioners are built in the

  • front seats
  • shoulder anchors
  • seat belt retractors
  • seat belt buckles
Q.27

The crankshaft of a typical in-line four cylinder engine has __________ balance weights.

  • 12
  • 4
  • 16
  • 8
Q.28

Which one of the following statement correctly describe the construction of a bevel-gear type differential?

  • The drive shafts are splined to the differential carrier.
  • The left side gear and the differential carrier rotate in constant unison.
  • The differential carrier houses differential pinion gears and side gears, each pinion gear meshes with a different side gear.
  • The differential carrier houses differential pinion gears and side gears
Q.29

The specific gravity of acid in a fully charged battery is generally

  • 1.00
  • 1.28
  • 1.82
  • 2.81
Q.30

In a single dry plate clutch, torsional vibrations are absorbed by

  • coil springs known as torsional springs
  • cushion springs
  • central hub
  • clutch pedal
Q.31

The engine oil viscosity is defined by __________ ratings.

  • automatic transmission fluid (ATF)
  • society of automotive engineers (SAE)
  • gross vehicle weight (GVW)
  • American petroleum institute (API)
Q.32

When the vehicle is at rest, the clutch is in engaged position.

  • Correct
  • Incorrect
Q.33

The function of a governor in automobiles is to

  • limit the power
  • limit the vehicle speed
  • maintain constant engine speed
  • maximise the fuel economy
Q.34

The brake warning light warns the driver of

  • water in the master cylinder
  • air in the hydraulic system
  • failure of the primary or secondary circuit of hydraulic system
  • power-brake failure
Q.35

The brake pedal during ABS operation

  • is pushed upward forcefully
  • pedal stroke becomes longer
  • transmits slight kickback to the driver's foot
  • all of the above
Q.36

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

  • 17:1
  • 15:1
  • 13:1
  • 10:1
Q.37

The information provided by the oxygen (O2) sensor to the feedback control system is about the

  • air-fuel ratio
  • air temperature
  • air flow speed
  • exhaust gas volume
Q.38

The oil pump is driven by the

  • camshaft
  • alternator shaft
  • crankshaft via drive belt
  • crankshaft directly
Q.39

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

  • Yes
  • No
Q.40

The advantage of double-wishbone suspension design is that a large amount of freedom is available for setting geometry and precise settings can be made for driving comfort and steerability,

  • Correct
  • Incorrect
Q.41

The diagram which shows the correct crank positions corresponding to the opening and closing of the valves, is known as

  • indicator diagram
  • axial force diagram
  • valve timing diagram
  • none of these
Q.42

The difference between DOT 3 and DOT 4 brake fluids is

  • DOT 4 fluid has a higher boiling point than DOT 3 fluid
  • DOT 4 fluid has a lower boiling point than DOT 3 fluid
  • DOT 3 and DOT 4 fluids have the same boiling point, but DOT 4 fluid has a longer service life
  • DOT 4 fluid is more resistant to freezing than DOT 3 fluid
Q.43

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.

  • Correct
  • Incorrect
Q.44

In automobiles G.V.W. refers to

  • gross vehicle width
  • gross vehicle weight
  • gross vehicle wheel base
  • gross vehicle wheel track
Q.45

The co-efficient of rolling resistance for a truck weighingN is 0.The rolling resistance to the truck is

  • 1.143 N
  • 11.43 N
  • 114.3 N
  • 1143 N
Q.46

The battery is an electrochemical device, which means battery

  • makes chemicals by mechanical means
  • uses chemical action to provide electricity
  • has curved plates instead of flat plates
  • does not use an electrolyte
Q.47

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

  • Yes
  • No
Q.48

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

  • 1-2-3-4
  • 1-3-4-2
  • 1-2-4-3
  • 1-3-2-4
Q.49

If the level of tension in the belt is too high, it can result in a loss of power or in bending of the rotating shaft or crankshaft.

  • Correct
  • Incorrect
Q.50

The operation of removing trapped air from the hydraulic braking system is known as

  • trapping
  • tapping
  • bleeding
  • cleaning
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