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Free download in PDF Automobile Engineering Objective Type 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.
(21)
During a collision the front parts of an automobile are subjected to a deceleration of about ……… at about 50 mphr
[A]
100g
[B]
1000g
[C]
1g
[D]
10g
(22)
Which motor cycle has maximum power rating
[A]
Rajdoot
[B]
Jawa
[C]
Yamaha
[D]
Bullet
(23)
Most of the mopeds in India have capacity of
[A]
10 cc
[B]
250 cc
[C]
50 cc
[D]
175 cc
(24)
The range of gear ratios in a vehicle depends on
[A]
The ratio of engine h.p to laden weight of vehicle
[B]
Max. engine torque / wt. of vehicle
[C]
Only on the laden weight of vehicle
[D]
The power to weight ratio of engine
Answer: Max. engine torque / wt. of vehicle
(25)
Comparing a Four wheel drive with Two wheel drive system either at front or rear and assuming an equal division of weight between the two axes
[A]
From the point of view of traction front wheel drive is better than rear wheel drive
[B]
Front wheel and rear wheel drive are equal
[C]
Four wheel drive can always give more traction than either rear or front wheel drive
[D]
Four wheel drive can utilize all the weight of the vehicle only at a particular road friction
Answer: Four wheel drive can always give more traction than either rear or front wheel drive
(26)
The duration of the fuel injection at full load in a diesel engine running at 1800 rpm when it has 200 of crank travel is
[A]
1/600 sec
[B]
1/640 sec
[C]
1/540 sec
[D]
1/530 sec
(27)
In ‘V’ type engines the included angle between two banks of cylinders is
[A]
450
[B]
600
[C]
1300
[D]
900
(28)
If compression ratio is increased
[A]
Air standard efficiency will be increased
[B]
Air standard efficiency will be decreased
[C]
Thermal efficiency will be increased
[D]
Volumetric efficiency will be increased
Answer: Air standard efficiency will be increased
(29)
The turbulence in diesel engines ensures to
[A]
Increase the volumetric efficiency
[B]
Increase the compression ratio
[C]
Bring the fuel quickly in contact with the air
[D]
Increase the specific fuel consumption
Answer: Bring the fuel quickly in contact with the air
(30)
The metering rod is designed to vary the size of which jets
[A]
High speed jets
[B]
Accelerating jets
[C]
Float level jets
[D]
Idle jets
31
As compression ratio in an engine goes up, the octane requirements of the fuel
[A]
Goes down
[B]
Goes up
[C]
Stay about the same
[D]
None
32
The conventional mechanical type fuel pump develops …………. pressure
[A]
0.15 Kg/cm2
[B]
1.0 Kg/cm2
[C]
0.5 Kg/cm2
[D]
0.3 Kg/cm2
33
Which type of valve arrangements require the use of rocket arms?
[A]
H – head
[B]
T – head
[C]
I – head
[D]
L – head
34
The combustion process in a diesel engine is
[A]
Constant pressure process
[B]
Isothermal process
[C]
Constant volume process
[D]
Adiabatic process
Answer: Constant pressure process
35
The compression pressure in diesel engine is around
[A]
40 Kg/cm2
[B]
10 Kg/cm2
[C]
30 Kg/cm2
[D]
none of the above
36
The temperature of the compressed air should be ………….. of the fuel
[A]
Below the flash point
[B]
Above the flash point
[C]
Above the fire point
[D]
Between the fire and flash point
Answer: Above the fire point
37
The compression ratio in a diesel engine is as high as
[A]
25:1
[B]
20:1
[C]
10:1
[D]
5:1
38
Immediately after ignition, combustion chamber temperatures may reach a value of
[A]
15000C
[B]
75000C
[C]
55000C
[D]
25000C
39
In general the design of the current regulator is such that its main actuating winding carries full
[A]
Generator voltage
[B]
Generator output
[C]
Field current
[D]
Battery voltage
40
Vibration damper ……….
[A]
controls the torsional vibrations
[B]
drives the pulley
[C]
dampens the engine speed
[D]
reduces the speed of the flywheel
Answer: controls the torsional vibrations
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