COMPRESSORS, GAS TURBINES AND JET ENGINES QUIZ

Ratio of compression is the ratio of

Stroke volume and clearance volume

Pressures at discharge and suction corresponding to same temperature

Gauge discharge pressure to the gauge intake pressure

Absolute discharge pressure to the absolute intake pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

A rotary compressor is driven by an

Either (A) or (B)

None of these

Engine

Electric motor

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of isentropic work to Euler work is known as

Work coefficient

Slip factor

Pressure coefficient

Polytropic reaction

TRUE ANSWER : ?
YOUR ANSWER : ?

In axial flow compressor, exit flow angle deviation from the blade angle is a function of

Blade camber and space-chord ratio

Blade camber and incidence angle

Space-chord ratio

Blade camber

TRUE ANSWER : ?
YOUR ANSWER : ?

A rocket engine uses __________ for the combustion of its fuel.

Its own oxygen

None of these

Surrounding air

Compressed atmospheric air

TRUE ANSWER : ?
YOUR ANSWER : ?

A jet engine has

No propeller

Propeller at back

Propeller in front

Propeller on the top

TRUE ANSWER : ?
YOUR ANSWER : ?

The compressor efficiency is the

Isothermal H.P./shaft H.R

Isothermal H.P/indicated H.R

Compression work/motor input

Total output/air input

TRUE ANSWER : ?
YOUR ANSWER : ?

Volumetric efficiency is

Reciprocal of compression ratio

Index of compressor performance

The ratio of stroke volume to clearance volume

The ratio of the air actually delivered to the amount of piston displacement

TRUE ANSWER : ?
YOUR ANSWER : ?

If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is given by

1 - k + k (p₁/p₂)1/n

1 + k - k (p₂/p₁) n-1/n

1 + k - k (p₂/p₁)1/n

1 - k + k (p₁/p₂) n- 1/n

TRUE ANSWER : ?
YOUR ANSWER : ?

Free air is the air at

0°C and standard atmospheric conditions

Atmospheric conditions at any specific location

15°C and 1 kg/cm²

20°C and 1 kg/cm² and relative humidity of 36%

TRUE ANSWER : ?
YOUR ANSWER : ?

↑