COMPRESSORS, GAS TURBINES AND JET ENGINES QUIZ

Choose the correct statement

Gas turbine requires lot of cooling water

Gas turbine is capable of rapid start up and loading

Gas turbines have high standby losses and require lot of maintenance

Gas turbines has flat efficiency at part loads

TRUE ANSWER : ?
YOUR ANSWER : ?

The volumetric efficiency of a compressor falls roughly as follows for every 100 m increase in elevation

0.1%

1.0%

0.5%

5%

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as

Volumetric efficiency

Isothermal efficiency

Compressor efficiency

Mechanical efficiency

TRUE ANSWER : ?
YOUR ANSWER : ?

In jet propulsion power unit, the inlet duct of diverging shape is used in order to

Collect more air

Provide robust structure

Convert kinetic energy of air into pressure energy

Beautify the shape

TRUE ANSWER : ?
YOUR ANSWER : ?

The capacity of a compressor is expressed in

kg/m²

kg/m³

m³/min

m³/kg

TRUE ANSWER : ?
YOUR ANSWER : ?

Water is injected in gas turbine cycle to

Increase efficiency

Control temperature

Control output of turbine

Control fire hazards

TRUE ANSWER : ?
YOUR ANSWER : ?

Pick up the correct statement

Large gas turbines use radial inflow turbines

Gas turbines have their blades similar to steam turbine

Gas turbine's blade will appear as impulse section at the hub and as a reaction section at tip

Gas turbines use both air and liquid cooling

TRUE ANSWER : ?
YOUR ANSWER : ?

If the flow of air through the compressor is perpendicular to its axis, then it is a

Reciprocating compressor

Axial flow compressor

Centrifugal compressor

Turbo compressor

TRUE ANSWER : ?
YOUR ANSWER : ?

The type of rotary compressor used in gas turbines, is of

None of the listed here

Radial flow type

Centrifugal type

Axial flow type

TRUE ANSWER : ?
YOUR ANSWER : ?

A rotary compressor is driven by an

Either (A) or (B)

Electric motor

None of these

Engine

TRUE ANSWER : ?
YOUR ANSWER : ?

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