INTERNAL COMBUSTION ENGINES QUIZ

The thermal efficiency of diesel engines is about

0.7

0.5

0.3

0.15

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum propulsive efficiency of a turbojet engine is at a speed of

3000 km/h

2000 km/h

1000 km/h

2400 km/h

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement is correct regarding normal cetane?

Its chemical name is normal hexadecane

It is a standard fuel used for knock rating of diesel engines

All of these

It has long carbon chain structure

TRUE ANSWER : ?
YOUR ANSWER : ?

The air requirement of a petrol engine during starting compared to theoretical air required for complete combustion is

More

Same

Less

May be more or less depending on engine capacity

TRUE ANSWER : ?
YOUR ANSWER : ?

The pressure inside the cylinder is _________ the atmospheric pressure during the exhaust stroke.

None of these

Below

Equal to

Above

TRUE ANSWER : ?
YOUR ANSWER : ?

The object of providing masked inlet valve in the air passage of compression ignition engines is to

Induce primary swirl

Enhance flow rate

Induce secondary turbulence

Control air flow

TRUE ANSWER : ?
YOUR ANSWER : ?

A 5 BHP engine running at full load would consume diesel of the order of

1 kg/hr

3 kg/hr

5 kg/hr

0.3 kg/hr

TRUE ANSWER : ?
YOUR ANSWER : ?

The injection pressure in a diesel engine is about

10 bar

150 bar

100 bar

500 bar

TRUE ANSWER : ?
YOUR ANSWER : ?

The pressure at the end of compression in the case of diesel engine is of the order of

6 kg/cm

20 kg/cm

12 kg/cm

35 kg/cm

TRUE ANSWER : ?
YOUR ANSWER : ?

A diesel engine has compression ratio from

25 to 40

15 to 25

10 to 15

6 to 10

TRUE ANSWER : ?
YOUR ANSWER : ?

↑