Reheating in gas turbine results in

Reheating in multistage expansion gas turbine results in

A

High thermal efficiency

B

Reduction in compressor work

C

Decrease of heat loss in exhaust

D

Maximum work output

In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the

A

Thrust and range of aircraft

B

Efficiency of the engine

C

Both (A) and (B)

D

None of these

Reheating in a multistage expansion gas turbine ________ compressor work.

A

Has no effect on

B

Decreases

C

Increases

D

None of these

Reheating in a gas turbine

A

Increases the thermal efficiency

B

Increases the compressor work

C

Increases the turbine work

D

Decreases the thermal efficiency

The main purpose of reheating in gas turbine is to

A

Increase temperature

B

Reduce turbine size

C

Increase power output

D

Increase speed

Reheating of steam in a turbine

A

Increases the work-done through the turbine

B

Increases the efficiency of the turbine

C

Reduces wear on the blades

D

All of these

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 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

An improved and fuel efficient version of the pusher type reheating furnace is the __________ furnace.

A

Walking beam

B

Shaft

C

Tunnel

D

Rotary hearth

Reheating in gas turbine results in

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