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.Management Sciences
A. large gas turbines employ axial flow compressors
B. axial flow compressors are more stable than centrifugal type compressors but not as efficient
C. axial flow compressors have high capacity and efficiency
D. axial flow compressors have instability region of operation
E. centrifugal compressors are used mainly on low flow pressure ratio gas turbines
Related Mcqs:
- Cylinder clearance in a compressor should be _________________?
- A. as large as possible B. as small as possible C. about 50% of swept volume D. about 100% of swept volume E. none of the above...
- During peak load periods, the best method of controlling compressors is___________________?
- A. start-stop motor B. constant speed unloader C. relief valve D. variable speed E. none of the above...
- The ratio of outlet whirl velocity to blade velocity in case of centrifugal compressor is called__________________?
- A. slip factor B. velocity factor C. velocity coefficient D. blade effectiveness...
- Pick up the correct statement ?
- A. gas turbine uses low air-fuel ratio to economise on fuel B. gas turhine uses high air-fuel ratio to reduce outgoing temperature C. gas turbine uses low air-fuel ratio to develop the high thrust required D. all of the above E. none of the above...
- The compression ratio in a gas turbine is of the roder of____________________?
- A. 3.5 : 1 B. 5 : 1 C. 8 : 1 D. 12 : 1 E. 20 : 1...
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