Engineering/Automobile Engineering MCQ Set 03 Sample Test,Sample questions

Question:
 Engine misfiring is likely to result from

1.Spark plug gap too small

2.Spark plug gap too wide

3.Vapours lock in the fuel only

4.Incorrect fuel air mixture


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

1. 17:1

2.15:1

3.13:1

4.10:1


Question:
 In a Diesel engine, the function of a fuel injector is to

1.Mix the fuel and air

2. Ignite the air-fuel mixture

3. Provide flame front for ignition

4.Spray atomized fuel in the cylinder


Question:
 In a four cylinder inline engine, the number of firing strokes in one revolution of the crank is

1.1

2.2

3.3

4.4


Question:
 In a four speed four stroke Diesel engine, the intake valve

1.Opens at T.D.C. and closes at B.D.C.

2.Opens at 20° before T.D.C. and closes at 35° after B.D.C.

3.Opens at 10° after T.D.C. and closes at 20° before B.D.C.

4.None of the above


Question:
 In an engine, the temperature of the piston will be more at the

1.Crown of the piston

2.Skirt of the piston

3.Piston walls

4.Piston rings


Question:
 One effect of detonation is

1.Delay in ignition

2. Loss of power

3.Overheating of engine

4.Overcooling of engine


Question:
 The advantage of a tubeless tyre over tube type tyre is

1.Slow air leakage

2.Better fuel efficiency

3.Less chances of running flat

4.All of these


Question:
 The battery is an electrochemical device, which means battery

1. Makes chemicals by mechanical means

2.Uses chemical action to provide electricity

3.Has curved plates instead of flat plates

4.Does not use an electrolyte


Question:
 The cam shaft in an engine is always mounted

1.Parallel to the crankshaft

2.Perpendicular to the crankshaft

3.Inclined to the crankshaft

4.None of these


Question:
 The coefficient of rolling resistance for a truck weighing 63,500 N is 0.018. The rolling resistance to the truck is

1.1.143 N

2. 11.43 N

3.114.3 N

4. 1143 N


Question:
 The condition that results in large quantities of CO emission is

1. Insufficient air during combustion

2. Insufficient fuel during combustion

3.Low temperature combustion

4.High temperature combustion


Question:
 The function of oil control rings is that it

1.Lubricates the cylinder wall by releasing oil from its hole

2.Keeps the cylinder wall lubricated by holding oil in its channel

3.Prevents engine oil from going into the combustion chamber and returns excess lubricating oil off the cylinder wall through the return holes in the piston to the oil pan

4.Maintains a seal and prevents escape of burned gases and oil leakage


Question:
 The main cause for the change in engine oil viscosity is

1. Humidity

2.Temperature

3.Vibration

4.Contamination


Question:
 The materials used for cylinder block are

1.Cast iron and steel

2.Cast iron and aluminium alloy

3.Steel and aluminium alloy

4.Brass and steel


Question:
 The parking brakes employed in vehicles are operated

1.Mechanically

2.Hydraulically

3.Pneumatically

4.None of these


Question:
 The power source for a brake booster is

1.Exhaust manifold pressure

2.Electricity

3. The pressure difference between the atmospheric pressure and the vacuum pressure in the intake manifold

4.Hydraulic pump


Question:
 The sequence order of events in a four stroke engine is

1.Suction exhaust power compression

2.Suction power compression exhaust

3. Suction compression power exhaust

4.Exhaust compression power suction


Question:
 The temperature indicating instrument in vehicles indicates the temperature of

1.Engine piston

2.Engine cylinder

3.Lubricating oil

4.Jacket cooling water


Question:
 When turning a corner

1.The front wheels are toeing out

2.The front wheels are turning on different angles

3.The inside front wheels has a greater angle than the outside wheel

4.All of the above


Question:
A basic difference between the spark ignition engine and the Diesel engine is that the

1.Diesel engine compresses air alone instead of an air-fuel mixture

2.Air temperature ignites the fuel in the Diesel engine

3.Fuel is sprayed into the combustion chamber in the Diesel engine as the piston nears T.D.C. on the compression stroke

4.All of the above


Question:
A heat treated glass generally used in automobiles bursts into ________ upon cracking,

1. Sharp edged fragments

2.Small particles

3.Large particles

4. None of these


Question:
A heat treated glass generally used in automobiles bursts into ________ upon cracking,

1. Sharp edged fragments

2.Small particles

3.Large particles

4. None of these


Question:
A maintenance free battery

1.Has lead-antimony plate grid

2.Has lead-calcium plate grid

3.Does not contain acid

4. Does not contain water


Question:
An imbalance wheel during vehicle operation

1.Makes large noise when its heavy point hits the road surface

2. Deflects in the vehicle's longitudinal direction

3.Bounces vertically or deflects from side to side (as seen from front or rear)

4. Creates a standing wave


Question:
An overinflated tyre will wear the tread most near the

1.Edges

2.Corners

3.Centre

4.None of these


Question:
Clutch facings are usually attached to the plate by

1.Steel rivets

2.Brass rivets

3.Aluminium screws

4.Steel screws


Question:
Damper in an automobile is used to

1.Absorb the energy

2.Dissipate the energy

3.Release the energy

4.Increase the energy


Question:
How many cells are used in a 12 volt car battery?

1. 2

2.4

3.6

4.8


Question:
If clearance volume of I.C. engines is increased, the compression ratio will

1. Increase

2.Decrease

3. Remain constant

4. Be doubled


Question:
If the valve clearances are excessively large, the problem that can arise is

1.Overheating of the engine

2. Incomplete valve closure

3.Fouling of spark plug by gasoline

4.None of these


Question:
In a Diesel engine, the fuel is ignited by

1.An electric spark

2.The heat of compression

3.The hot exhaust

4.None of these


Question:
In a four wheel drive (4WD), the numbers of gear boxes are

1.1

2.2

3.3

4.4


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

1.Coil springs known as torsional springs

2.Cushion springs

3.Central hub

4.Clutch pedal


Question:
In case of a Diesel car, the pressure at the end of compression is of the order of

1. 15 bar

2.25 bar

3.45 bar

4.35 bar


Question:
In vehicles with tilt steering, the steering column is pivoted in

1.Upper bracket

2.Lower bracket

3.Tilt bracket

4.Steering yoke joint Correct Answer


Question:
Petrol that detonates easily is called

1.High octane petrol

2. Low octane petro

3.Unleaded petrol

4.Blended fuel


Question:
The basic function of the suspension is to

1. Absorbs vibration and impact forces from the road surface

2.Ensure that the steering wheel can deliver a suitable amount of steering force

3.Ensure that wheel alignment is not disturbed during driving

4.Automatically correct the effects of over steering


Question:
The basic purpose of providing caster angle on wheels is to

1.Prevent uneven tyre wear

2.Maintain directional control

3.Bring the road contact of the tyre under the point of load

4.Compensate for wear in the steering linkage


Question:
The calorific value of Diesel is about

1. 36.5 MJ/kg

2.38.5 MJ/kg

3.42.5 MJ/kg

4.45.5 MJ/kg


Question:
The camshaft of a four stroke Diesel engine running at 1000 rpm will run at

1. 500 rpm

2.1000 rpm

3.2000 rpm

4.4000 rpm


Question:
The commonly used antifreeze solution in automobiles is

1.Carbon disulphide

2. Ethylene glycol

3.Ammonium chloride

4.Freon-12


Question:
The component that is responsible for converting the rotation of the steering wheel into lateral motion is the

1. Steering wheel

2.Steering shaft

3.Steering gearbox

4.Tie rod


Question:
The condition that causes vapour locking in a brake system is

1.Overheating of the fluid due to frequent brake application

2.Overcooling of the brakes during high speed driving

3.Keeping the vehicle without use for an extended period

4.An excessively high engine speed on a downhill road


Question:
The connecting rod is attached to the piston by the

1. Cap bolt

2.Piston pin

3.Cap roller bearing

4.Rod cap


Question:
The correct flow of power through the drive train is

1.Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels

2.Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels

3.Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels

4.Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels


Question:
The crankcase dilution means

1.Dilution of fuel in the crankcase

2. Dilution of oil by water in the crankcase

3.Dilution of lubrication oil by fuel in the crankcase

4.Dilution of mixture passing through crankcase in two stroke engines


Question:
The Diesel engines are also known as

1.Spark ignition (S.I.) engines

2.Compression ignition (C.I.) engines

3. Steam engines

4.None of these


Question:
The Diesel engines as compared to petrol engines require

1. Bigger flywheel

2.Smaller flywheel

3.Same size of flywheel

4.No flywheel


Question:
The effect of vapour locking on the brake performance is that the

1.Brakes function more effectively

2.Brakes fail completely

3.Brake operation is delayed after depression of the brake pedal

4.Vapour locking has no effect on brake performance


Question:
The engine oil is stored in _________ when the engine is not running.

1.Oil pan

2.Cylinder head

3.Oil pump

4.Separate oil tank


Question:
The function of anti-lock brake system (ABS) is that is

1.Reduces the stopping distance

2. Minimizes the brake fade

3.Maintains directional control during braking by preventing the wheels from locking

4.Prevents nose dives during braking and thereby postpones locking of the wheels


Question:
The gear shift lever requires two separate motions to shift gears, and the first movement

1. Moves the synchronizer

2.Selects the synchronizer

3.Meshes the gears

4.Operates the clutch


Question:
The gear shift lever requires two separate motions to shift gears, and the first movement

1. Moves the synchronizer

2.Selects the synchronizer

3.Meshes the gears

4.Operates the clutch


Question:
The included angle is the sum of the

1. Camber and castor

2.Castor and S.A.I

3.Camber and S.A.I.

4.Camber and toe in


Question:
The lower cylindrical portion of the piston which improves piston cooling performance is called

1.Piston crown

2. Connecting rod

3. Piston pin boss

4.Piston skirt


Question:
The material generally used for cylinder sleeves is

1.Aluminium

2.Ceramic

3.Cast iron

4.Fibre reinforced plastic


Question:
The most effective method of controlling S.I. engine exhaust emission is by

1.Recirculating exhaust

2.Using catalytic converter

3.Using some additives in the fuel

4.None of these


Question:
The motion of the cam is transferred to the valves through

1.Pistons

2.Rocker arms

3.Camshaft pulley

4. Valve stems


Question:
The oil pump is driven by the

1.Camshaft

2.Alternator shaft

3. Crankshaft via drive belt

4.Crankshaft directly


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

1.Trapping

2.Tapping

3.Bleeding

4.Cleaning


Question:
The power actually developed inside the engine cylinder is called as

1.Indicated power

2.Brake power

3.Frictional power

4. None of these


Question:
The purpose of transmission in an automobile is

1.To vary the speed of automobile

2.To vary the torque at the wheels

3.To vary the power of automobile

4.None of these


Question:
The rating of C.I. engine fuel (Diesel) is given by

1. Octane number

2.Performance number

3.Cetane number

4.None of these


Question:
The rolling resistance is because of the friction between the

1.Wheel rim and tyre

2.Tyre and the road surface

3.Wheel rim and road surface

4.None of these


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

1. 1.00

2.1.28

3.1.82

4. 2.81


Question:
The temperature at which tyre inflation pressure should be checked is

1.20°C

2.25°C

3.35°C

4.Ambient temperature


Question:
Two advantages of using helical gears rather than spur gears in a transmission system are

1.Strength and cost

2.Noise level and strength

3.Strength and less end thrust

4.Noise level and economy


Question:
Two general types of tyres are

1.Tube type and tubeless

2.Solid and tubeless

3.Air and pneumatic

4.Split rim and drop centre


Question:
Two speed reverse gear arrangements is generally provided in case of

1.Passenger cars

2.Matadors

3.Tractors

4.Trucks


Question:
Valve overlap is the number of degrees of camshaft rotation during which

1.Both valves are closed

2.Both valves are open

3.Both 'A' and 'B'

4.None of these


Question:
Vulcanizing means

1.Heating rubber under pressure

2.Spraying with special paint

3.Melting rubber while stirring it

4. None of these


Question:
What type of bearing is used for main bearings and connecting rod bearings?

1. Ball bearings

2.Plain bearings

3.Needle roller bearing

4.Taper roller bearing


Question:
Wheel base of a vehicle is the

1.Distance between the centres of the front and rear wheels

2.Distance between the centres of the front tyres

3.Distance between the centres of the rear tyres

4.Extreme length of the vehicle


Question:
Wheel base of a vehicle is the

1.Distance between the centres of the front and rear wheels

2.Distance between the centres of the front tyres

3.Distance between the centres of the rear tyres

4.Distance between the centres of the rear tyres


Question:
When a gear box has four forward speeds and one reverse speed, it is said to be a

1.3-speed gear box

2.4-speed gear box

3.5-speed gear box

4. 6-speed gear box


Question:
When the top of the wheel is tilted outward, then it is called

1.Positive camber

2. Negative camber

3.Positive caster

4.Negative caster


Question:
Which of the following bulb in a car will have the least wattage?

1. Head light bulb

2.Stop light bulb

3.Parking light bulb

4.Ignition warning bulb


Question:
Which of the following is not a part of the chassis?

1.Wheels

2.Front axle

3.Steering system

4.Seats


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

1.The six planetary pinions rotate in constant mesh with the internal gears.

2.One drive shaft is splined to the central gear and the other to the planetary gear.

3.Each planetary pinion gear meshes with both the central gear and the internal gear.

4.The internal gear is fixed to the planetary gear.


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