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Free download in PDF Automobile Engineering Short Questions & Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
41
On modern four stroke engines the inlet valve opens just
[A]
Before TDC
[B]
After TDC
[C]
Before BDC
[D]
After BDC
42
On modern four stroke engines the exhaust valve opens just
[A]
Before TDC
[B]
After TDC
[C]
Before BDC
[D]
After BDC
43
The purpose of valve clearance is to
[A]
Allow the valve to expand
[B]
Allow the sliding of valve in the guide
[C]
Ensure that the valve closes fully
[D]
Ensure that the crankshaft is free to rotate
Answer: Ensure that the valve closes fully
44
The size of the engine intake valve is
[A]
Same as that of exhaust valve
[B]
Smaller than that of exhaust valve
[C]
Larger than that of exhaust valve
[D]
Does not depend upon the size of exhaust valve
Answer: Smaller than that of exhaust valve
45
Exhaust valve temperature is about
[A]
35 degree celsius
[B]
100 degree celsius
[C]
150 degree celsius
[D]
500 degree celsius
Answer: 500 degree celsius
46
The valve is opened as the cam lobe on the cam raises the
[A]
Bearing
[B]
Piston
[C]
Valve lifter
[D]
Valve seat
47
In a diesel engine the fuel injection pressure is in the range
[A]
100 to 170 atm
[B]
60 to 70 atm
[C]
30 to 40 atm
[D]
20 to 25 atm
48
In a four stroke engine each cylinder has
[A]
One valve
[B]
Two valves
[C]
Three valves
[D]
Four valves
49
Two stoke engine is preferred for small vehicles because
[A]
Fuel consumption is low
[B]
Shock and vibrations are less
[C]
Its size is small
[D]
It is easy to control
Answer: Its size is small
50
A negative loop in the P.V diagram of an I.C engine is due to
[A]
Pre ignition in the engine
[B]
Suction of air for engine
[C]
Pre opening of the exhaust valve
[D]
High pressure in the cylinder
Answer: Suction of air for engine
51
The size of intake valve is
[A]
Smaller than that of the exhaust valve
[B]
Equal to that of the exhaust valve
[C]
Larger than that of the exhaust valve
[D]
Not depending upon the size of exhaust valve
Answer: Smaller than that of exhaust valve
52
During combustion the pressure in the cylinder may increase to as much as
[A]
50 Kg/cm2
[B]
400 Kg/cm2
[C]
10 Kg/cm2
[D]
None
53
The wheel base of the vehicle is:
[A]
Distance between centers of both front wheels
[B]
Distance between centers of both rear wheels
[C]
Distance between centers of the front and rear wheels
[D]
Distance between centers of right front and rear left wheels
Answer: Distance between centers of the front and rear wheels
54
The device used to maintain zero valve clearance in an internal combustion engine:
[A]
Hydraulic tappet
[B]
Hydraulic valve lifter
[C]
Hydraulic lash adjuster
[D]
All of these
55
A thin strip of metal used for measuring clearences between two parts:
[A]
Screw gauge
[B]
Feeler gauge
[C]
Voltmeter
[D]
Vernier scale
56
GVM stands for:
[A]
Gross vehicle mass
[B]
Motor’s gross velocity
[C]
Greatest velocity mode
[D]
All of the above
Answer: Gross vehicle mass
57
Ignition coil’s secondary terminal connects to:
[A]
Voltmeter
[B]
Ammeter
[C]
Potentiometer
[D]
Spark plug
58
The Ackermann steering layout
[A]
Makes for safer driving
[B]
Enables the driver to feel ahead position
[C]
Gives minimum tyre wear
[D]
Reduces load on the kingpins and stub axle
Answer: Makes for safer driving
59
Caster is defined as the inclination of
[A]
Front wheel to the vertical
[B]
The king pin axis in the fore and aft plane
[C]
The king pin axis in the transverse vertical plane
[D]
The axis of stub axle to the horizontal
Answer: The king pin axis in the fore and aft plane
60
The distance between dual tyres of vehicles is to be correctly spaced to
[A]
Ensure proper distribution of load between dual wheels
[B]
Reduce over-steering effect
[C]
Reduce the slippage between tyre and road while taking a turn
[D]
Ensure effective braking
Answer: Reduce the slippage between tyre and road while taking a turn
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