Compressors | Gas Turbines and Jet Engines

Gas turbines for power generaion are normally used___________________?

Byadmin January 23, 2019August 15, 2021

Gas turbines for power generaion are normally used___________________?

A. to supply base load requirements
B. to supply peak load requirements
C. to enable start thermal power plant
D. in emergency
E. when other sources of power fail

Compressors | Gas Turbines and Jet Engines

The air-fuel ratio in gas turbines is of the order of ______________________?

The air-fuel ratio in gas turbines is of the order of ______________________?

A. 7 : 1
B. 15 : 1
C. 30 : 1
D. 40 : 1
E. 50: 1

Read More The air-fuel ratio in gas turbines is of the order of ______________________?
Compressors | Gas Dynamics and Gas Turbines | Mechanical Engineering

In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in

Question: In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in
[A].

exit nozzle, which is a constant volume process
[B].
exit nozzle, which is essentially an isentropic process
[C].
turbine blades, which is a constant volume process
[D].
turbine blades, which is essentially an isentropic process

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a turbo jet engine, subsequent to heat addition to compressed air, to get the power output, the working substance is expanded in
Compressors | Gas Dynamics and Gas Turbines | Mechanical Engineering

A turbo-prop is preferred to turbo-jet because

Question: A turbo-prop is preferred to turbo-jet because
[A].

it has high propulsive efficiency at high speeds
[B].
it can fly at super sonic speeds
[C].
it can fly at high elevations
[D].
it has high power for take off

Answer: Option D

Explanation:

No answer description available for this question.

Read More A turbo-prop is preferred to turbo-jet because
Compressors | Gas Turbines and Jet Engines

Which is false statement about advantages of multistage compressor in comparison to single stage compressor_________________?

Which is false statement about advantages of multistage compressor in comparison to single stage compressor_________________?

A. less power requirement
B. better mechanical balance
C. less loss of air due to leakage past the cylinder
D. more effective lubrication
E. lower volumetric efficiency

Read More Which is false statement about advantages of multistage compressor in comparison to single stage compressor_________________?
Compressors | Gas Turbines and Jet Engines

A centrifugal compressor works on the principle of__________________?

A centrifugal compressor works on the principle of__________________?

A. conversion of pressure energy into kinetic energy
B. conversion of kinetic energy into pres¬sure energy
C. centripetal action
D. generating pressure directly
E. combination of A. and D.

Read More A centrifugal compressor works on the principle of__________________?
Compressors | Gas Turbines and Jet Engines

The efficiency of jet engine is__________________?

The efficiency of jet engine is__________________?

A. higher at ground
B. higher at high altitudes
C. same at all altitudes
D. higher at high speed
E. lower at low speed

Read More The efficiency of jet engine is__________________?

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