Diesel engines as compared to petrol engines require ______________________?

A. Bigger flywheel
B. Smaller flywheel
C. Same size flywheel
D. No flywheel

The system of lubrication used for motor cycles and scooters is by________________?

A. forced lubrication system
B. splash lubrication
C. applying grease under pressure
D. wet sump method

The specific fuel consumption for a petrol engine first decreases with increase in fuel air ratio and then increases with further increase in fuel air ratio. The minimum value occurs in the range of__________________?

A. Lean mixture
B. Chemically correct mixture
C. Rich mixture
D. Unpredictable

Air injection in I.C. engines refers to injection of___________________?

A. Air only
B. Liquid fuel only
C. Liquid fuel and air
D. Supercharging

The ratio of useful power; engine friction exhaust gas losses; cooling water, air and oil losses for a diesel engine is of the order of____________________?

A. 5:25:30:50
B. 25:35:5:35
C. 25:5:10:60
D. 40:30:15:15

With increase in speed of vehicle, the back pressure will________________?

A. Decrease
B. Increase
C. Remain unalfected
D. Depend on other factors

A 4-stroke diesel engine needs about following amount of air_________________?

A. 75 cc per min. per h.p.
B. 750 cc per min. per h.p.
C. 7500 cc per min. per h.p.
D. 75000 cc per min. per h.p.

The ash content in diesel oil should bot be more than_______________?

A. 1%
B. 5%
C. 0.1%
D. 0.01%

Fuel consumption with increase in back pressure will________________?

A. Increase
B. Decrease
C. Remain unaffected
D. Depend on other factors

A fuel will detonate less if it has___________________?

A. Higher self ignition temperature
B. Lower self ignition temperature
C. Proper self ignition temperature
D. Self ingition temperature has nothing to do with detonation