The work ratio of simple gas turbine cycle depends upon

The pressure ratio for an open cycle gas turbine compared to closed cycle gas turbine of same h.p. is

A

Low

B

High

C

Same

D

Low/high depending on make and type

A closed cycle gas turbine gives ________ efficiency as compared to an open cycle gas turbine.

A

Same

B

Lower

C

Higher

D

None of these

The work ratio of simple gas turbine cycle depends on

A

Pressure ratio

B

Maximum cycle temperature

C

Minimum cycle temperature

D

All of the above

The ideal efficiency of simple gas turbine cycle depends on

A

Pressure ratio

B

Maximum cycle temperature

C

Minimum cycle temperature

D

All of the above

The ratio of the net work obtained from the gas turbine plant to the turbine work is known as

A

Compression ratio

B

Work ratio

C

Pressure ratio

D

None of these

The efficiency and work ratio of a simple gas turbine cycle are

A

Very low

B

Low

C

High

D

Very high

The thermal efficiency of a simple gas turbine for a given turbine inlet temperature with increase in pressure ratio

A

Increases

B

Decreases

C

First increases and then decreases

D

First decreases and then increases

There is a certain pressure ratio (optimum) for a gas turbine at which its thermal efficiency is maximum. With increase in turbine temperature, the value of pressure ratio for the peak efficiency would

A

Remain same

B

Decrease

C

Increase

D

None of the above

For an irreversible gas turbine cycle, the efficiency and work ratio both depend on

A

Pressure ratio alone

B

Maximum cycle temperature alone

C

Minimum cycle temperature alone

D

Both pressure ratio and maximum cycle temperature

The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which

A

Delivers unit discharge under unit head

B

Delivers unit discharge under unit speed

C

Develops unit power under unit head

D

Develops unit power under unit speed

The work ratio of simple gas turbine cycle depends upon

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