INTERNAL COMBUSTION ENGINES QUIZ

None of these

Air only

A mixture of diesel and air

Diesel only

Lean

None of these

Rich

Chemically correct

To satisfy the customer regarding the performance of the engine

To determine the information, which cannot be obtained by calculations

All of these

To conform the data used in design, the validity of which may be doubtful

30° after bottom dead center

30° after top dead center

30° before top dead center

30° before bottom dead center

Up to 75%

Up to 50%

Up to 100%

Up to 35%

End of compression stroke

None of these

Beginning of suction stroke

End of suction stroke

500°C

2000°C

250°C

1000°C

There can be limited supercharging in petrol engines because of detonation

Supercharging reduces knocking in diesel engines

Supercharging at high altitudes is essential

Supercharging results in fuel economy

Both (A) and (B)

Spark ignition

None of these

Compression ignition

Air used for combustion sent under pressure

Forced air for cooling cylinder

Burnt air containing products of combustion

Air used for forcing burnt gases out of engine's cylinder during the exhaust period