Questions
21
During a collision the front parts of an automobile are subjected to a deceleration of about ……… at about 50 mphr
Answer: 1g
24
The range of gear ratios in a vehicle depends on
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
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
Answer: 1/540 sec
27
In ‘V’ type engines the included angle between two banks of cylinders is
Answer: 900
28
If compression ratio is increased
Answer: Air standard efficiency will be increased
29
The turbulence in diesel engines ensures to
Answer: Bring the fuel quickly in contact with the air
30
The metering rod is designed to vary the size of which jets
Answer: High speed jets
31
As compression ratio in an engine goes up, the octane requirements of the fuel
Answer: Goes up
32
The conventional mechanical type fuel pump develops …………. pressure
Answer: 1.0 Kg/cm2
33
Which type of valve arrangements require the use of rocket arms?
Answer: I – head
34
The combustion process in a diesel engine is
Answer: Constant pressure process
36
The temperature of the compressed air should be ………….. of the fuel
Answer: Above the fire point
38
Immediately after ignition, combustion chamber temperatures may reach a value of
Answer: 15000C
39
In general the design of the current regulator is such that its main actuating winding carries full
Answer: Generator output
