The maximum compression ratio in an actual single stage axial flow compressor is of the order of :
A. 1 : 1.2
B. 1 : 2
C. 1 : 5
D. 1 : 10
E. 1 : 1
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
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
Losses in a centrifugal compressor are due to :
A. inlet losses
B. impeller channel losses
C. diffuser losses
D. all of the above
E. none of the above
The criterion of the thermodynamic efficiency for rotary compressor is :
A. isentropic compression
B. isothermal compression
C. polytropic compression
D. any one of the above
E. none of the above
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
Open cycle gas turbine works on :
A. Brayton or Atkinson cycle
B Rankine cycle
C. Carnot cycle
D. Eriksson cycle
E. Joule cycle
The work ratio of simple gas turbine cycle depends on :
A. pressure ratio
B. maximum cycle temperature
C. minimum cycle temperature
D. all of the above
