INTERNAL COMBUSTION ENGINES QUIZ

None of these

Diesel only

Air only

A mixture of diesel and air

Efficiency will be low

Low power will be produced

Higher knocking will occur

Black smoke will be produced

500 bar

10 bar

100 bar

150 bar

May start and end anywhere

Starts at 40° after bottom dead center and ends at 10° before top dead center

Starts at 40° before top dead center and ends at 40° after top dead center

Starts at top dead center and ends at 40° before bottom dead center

Bigger than

Smaller than

Same as

None of the listed here

Directly proportional to its (distance)2 from the centre

Inversely proportional to its (distance)2 from the centre

Directly proportional to its distance from the centre

Inversely proportional to its distance from the centre

40 to 60%

75 to 90%

60 to 70%

30 to 40%

0.001 sec

0.1 sec

1 sec

0.01 sec

Detonation

Piston ring and cylinder wear

Oil sludge in the engine crank case

Formation of hard coating on piston skirts

Twice

One-half

Equal to

Four-times