A. centrifugal compressor
B. axial compressor
C. pumps
D. all of the above
E. none of the above
Related Mcqs:
- The ratio of isentropic work to Euler work is known as_____________________?
A. pressure coefficient
B. work coefficient
C. polytropic reaction
D. slip factor
E. compressor efficiency - The ratio of isentropic work to euler’s work is known as _____________________?
A. compressor efficiency
B. isentropic efficiency
C. Euler’s efficiency
D. pressure coefficient
E. pressure ratio - Ratio of indicated H.P. and brake H.P. is known as_________________?
A. mechanical efficiency
B. volumetric efficiency
C. isothermal efficiency
D. adiabatic efficiency
E. relative efficiency - The clearance volume of the air compressor is kept minimum because____________________?
A. it allows maximum compression to be achieved
B. it greatly affects volumetric efficiency
C. it results in minimum work
D. it permits isothermal compression
E. none of the above - For a compressor, least work will be done if the compression is________________ ?
A. isentropic
B. isothermal
C. polytropic
D. somewhere in between isentropic and isothermal
E. none of the above - Pick up the wrong statement ?
A. centrifugal compressors deliver prac-tically constant pressure over a considerable range of capacities
B. Axial flow compressors have a sub-stantially constant delivery at variable pressures
C. centrifugal compressors have a wider stable operating range than axial flow compressors
D. axial flow compressors are bigger in diameter compared to centrifugal type
E. axial flow compressors apt to be longer as compared to centrifugal type - As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio_____________________?
A. increases
B. decreases
C. remains same
D. first increases and then decreases
E. first decreases and then increases - The air entry velocity m a rocket as compared to aircraft is_________________?
A. same
B. more
C. less
D. zero
E. dependent on power and speed - 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
E. both B. and C. 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
