In a cycle, the spark lasts roughly for ____________________?

A. 1 sec
B. 0.1 sec
C. 0.01 sec
D. 0.001 sec

A diesel engine as compared to petrol engine (both running ar rated load) is ____________________?

A. More efficient
B. Less efficient
C. Equally efficient
D. Unperdictable

Most high speed compression engines operate on ___________________?

A. Otto cycle
B. Diesel cycle
C. Dual cycle
D. Carnot cycle

The cam shaft of a four stroke I.C. engine running at 1500 rmp will run at __________________?

A. 1500 rpm
B. 750 rpm
C. 3000 rpm
D. Any value independent of engine speed

The term scavenging is generally associated with______________________?

A. 2-stroke cycle engines
B. 4-stroke cycle engines
C. aeroplane engines
D. diesel engines

Fuel consumption of diesef engines is not guaranteed at one quarter load because at such low loads________________?

A. The friction is high
B. The friction is unpredictable
C. The small difference in cooling water temperature or in internal friction has a disproportionate effect
D. The engine is rarely operated

A heat engine utilises the_________________?

A. Calorific value of oil
B. Low heat value of
C. High heat value of oil
D. Mean heat value of oil

The rating of a diesel engine, with increase in airintlet temperature, will ___________________?

A. Increase linearly
B. Decrease linearly
C. Increase parabolically
D. Decrease parabolically

In diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of____________________?

A. 250°c
B. 500°c
C. 1000°c
D. 150cpc

In a typical medium speed, 4-stroke cycle diesel engine ___________________?

A. Fuelinjection starts at 10° before to dead center and ends at 20° after tor dead center
B. Fuel injection starts at top dead center and ends at 20° after top dead center
C. Fuel injection starts at just before top dead center and ends just after top deac center
D. May start and end anywhere