In a four stroke engine for each crankshaft revolution, the camshaft revolves
One half turn
One turn
Two turns
Four turns
Correct Answer :
A. One half turn
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The caster is called positive when the top of the king pin is inclined to the
Rear of the vehicle
Front of the vehicle
Left of the vehicle
Right of the vehicle
In a four stroke engine for each crankshaft revolution, the camshaft revolves
One half turn
One turn
Two turns
Four turns
The difference between DOT 3 and DOT 4 brake fluids is
DOT 4 fluids have a higher boiling point than DOT 3 fluid
DOT 4 fluids have 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
The Diesel engines are also known as
Spark ignition (S.I.) engines
Compression ignition (C.I.) engines
Steam engines
None of these
The painting of automobiles is done to
Prevent rust from growing on the body
Improve its external appearance
Retain the characteristics of steel for long
All of these
Free pedal play in car clutches is about
15 mm
25 mm
40mm
60 mm
In a single dry plate clutch, torsional vibrations are absorbed by
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Cushion springs
Central hub
Clutch pedal
The advantage of having a tandem master cylinder arrangement in automobiles is that it
Enhances safety by serving two independent lines in a divided line brake circuit
Enhances safety by activating the brakes using vacuum pressure in the event of brake fluid loss
Supplies equal fluid pressure to each line of a divided line brake circuit, thereby preventing the brakes from dragging on one side
Boosts the brake fluid pressure to reduce the force required to depress the brake pedal
The connecting rods are generally made of ________ shaped crosssection.
I
C
L
H
The octane rating of petrol commercially available is
85-95
95-100
100-110
110-125
The number of exhaust manifolds in a V6 engine is
One
Two
Four
Eight
The best fuels for compression ignition engines are
Straight chain paraffin
Aromatics
Branched chain paraffin
Naphthalene
The cam shaft in an engine is always mounted
Parallel to the crankshaft
Perpendicular to the crankshaft
Inclined to the crankshaft
None of these
The rigid suspension is beneficial when
It is desired to reduce the unsprung mass
It is desired to have more flexibility in design
It is desired to improve tyre to ground contact characteristics
Large changes in load make it necessary to have a large suspension stroke
The main function of the brake fluid is
Lubrication
Power transmission
Cooling
None of these
In a four wheel drive (4WD), the numbers of gear boxes are
1
2
3
4
When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate
Brake power
Compression ratio
Specific air consumption
Mean effective pressure
The starter motor is driven by
Chain drive
Gear drive
Flat belt drive
V-belt drive
The process of removing the burnt gases from the engine cylinder by the fresh charge coming into the engine cylinder from the crankcase, is known as
Cleaning
Priming
Scavenging
Detonation
The firing order for an inline four cylinder I.C. engine is
1-2-3-4
1-3-4-2
1-2-4-3
1-3-2-4
The process of supplying the intake air to the engine cylinder at a pressure greater than the pressure of the surrounding atmosphere is known as
Supercharging
Auto ignition
Scavenging
Detonation
A front stabilizer bar is used to
Increase vehicle load carrying capacity
Provide a softer ride
Control suspension movement and body roll
All of the above
The purpose of a balancer shaft is to
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Increase inertia force of the rotating crankshaft
Reduce vibrations caused by the crankshaft rotation
Adjusts the timing of the intake and exhaust valve openings
The natural gas is compressed in a CNG cylinder at a pressure of
200 bar
220 bar
250 bar
300 bar
When the piston is at T.D.C, the volume above the piston in the combustion chamber is the
Clearance volume
Cylinder volume
Exhaust volume
None of these
The rating of C.I. engine fuel (Diesel) is given by
Octane number
Performance number
Cetane number
None of these
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
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Automatic ignition of the charge at the end of compression
Ignition induced by the passage of a spark
Ignition of the charge before the passage of flame front
Ignition induced to supplement the process of normal combustion
The petrol engine works on
Otto cycle
Carnot cycle
Diesel cycle
Rankine cycle
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