High air-fuel ratio is used in gas turbines______________________?

A. To increase the output
B. To increase the efficiency
C. To save fuel
D. To reduce the exit temperature

In which case the air-fuel ratio is likely to be maximum _________________?

A. 2-stroke engine
B. 4-stroke petrol engine
C. 4-stroke diesef engine
D. multi-cylinder engine

Reheating in gas turbine results in___________________?

A. Increase of work ratio
B. Decrease of thermal efficiency
C. Decrease of work ratio
D. Both a. and b. above

Work ratio of a gas turbine may be improved by f____________________?

A. decreasing the compression work
B. increasing the compression work
C. increasing the turbine work
D. decreasing the turbine work

In the aircraft propellers __________________?

A. The propulsive matter is caused to flow around the propelled body
B. Propulsive matter is ejected from within the propelled body
C. Its functioning does not depend on presence of air
D. All of the above

Work ratio of a gas turbine plant is ratio of______________________?

A. Net work output and work done by turbine
B. Net work output and heat supplied
C. Work done by turbine and heat supplied
D. Work done by turbine and net work output

The main purpose of reheating in gas turbine is to__________________?

A. Increase temperature
B. Reduce turbine size
C. Increase power output
D. Increase speed

Gas turbine cycle with Regenerator __________________?

A. Increases thermal efficiency
B. Allows high compression ratio
C. Decreases heat loss is exhaust
D. Allows operation at very high altitudes

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

Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES______________________?

A. 2500°c
B. 2000°c
C. 1500°c
D. 1000°c