Compressors, Gas Turbines and Jet Engines Online Quiz


1. The maximum combustion pressure in gas turbine is ________ as compared to I.C. engine.
More
Less

2. The increase in pressure in a roots blower is entirely due to back flow of air.
Agree
Disagree

3. In a gas turbine, air is obtained from the atmosphere and compressed in an air compressor.
True
False

4. A gas turbine used in aircraft should have low weight and small frontal area.
Correct
Incorrect

5. In reciprocating air compressors, isothermal efficiency is used for all sorts of calculations.
Correct
Incorrect

6. The operation of lifts, rams and pumps make use of compressed air.
Yes
No

7. For minimum work in multistage compression, the work-done on all stages should be equal.
Yes
No

8. Slip factor in a centrifugal compressor indicates the amount of air leaked from the storage vessel.
Yes
No

9. The perfect intercooling, in multistage compression, means that the temperature of air at inlet to subsequent stages is equal to the initial temperature.
Agree
Disagree

10. The ratio of the isentropic work to the Euler's work is known as pressure coefficient.
Yes
No

11. For a multistage compressor, the polytropic efficiency is constant throughout for all the stages.
True
False

12. The ratio of the isothermal power to the shaft power or brake power of the motor or engine required to drive the compressor is called overall isothermal efficiency.
True
False

13. The basic principle of the rocket propulsion is the same as that of jet propulsion.
Yes
No

14. A simple turbojet engine is basically a gas turbine engine equipped with a propulsive nozzle and diffuser.
Agree
Disagree

15. The volumetric efficiency of the compressor is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.
Yes
No

16. A centrifugal compressor is an axial flow compressor.
Correct
Incorrect

17. A compressor must be driven by some prime mover.
Agree
Disagree

18. In a compressed air system, the temperature of air discharged from the air motor is ________ than the initial compressor intake temperature.
More
Less

19. In axial flow compressors, the flow of air is parallel to the axis of compressor.
Correct
Incorrect

20. A receiver in compressor installations is used to damp pressure waves in compressor discharge.
Yes
No

     Score =

Correct answers:

Share on Google Plus

    FB Comments
    Comments

0 comments:

Post a Comment