A. gauge discharge pressure to the gauge intake pressure
B. absolute discharge pressure to the ab-solute intake pressure
C. pressures at discharge and suction cor-responding to same temperature
D. stroke volume and clearance volume
E. none of the above
Related Mcqs:
- Isothermal compression efficiency, even when running at high speed, can be approached by using A. multi-stage compression B. cold water spray C. both A. and B. above D. fully insulating the cylinder E. high stroke_________________?
Isothermal compression efficiency, even when running at high speed, can be approached by using
A. multi-stage compression
B. cold water spray
C. both A. and B. above
D. fully insulating the cylinder
E. high stroke - The advantage of multistage compression over single stage compression is ________________?
A. lower power consumption per unit of air delivered
B. higher volumetric efficiency
C. decreased discharge temperature
D. moisture free air
E. all of the above - For minimum work in multistage compression, assuming same index of compression in all stages_________________?
A. work done in first stage should be more
B. work done in subsequent stages should increase
C. work done in subsequent stages should decrease
D. work done in all stages should be equal
E. work done in any stage is no criterion for minimum work but depends on other factors - For a two stage compressor* if index of compression for higher stage is greater than index of compression for lower stage, then the optimum pressure as compared to ideal case will___________________?
A. increase
B. decrease
C. remain unaffected
D. other factors control it
E. unpredictable - The work ratio of a gas turbine plant is defined as the ratio of__________________?
A. net work output and heat supplied (6) net work output and work done by tur¬bine
C. actual heat drop and isentropic heat drop
D. net work output and isentropic heat drop
E. isentropic increase/drop in tempera¬ture and actual increase/ drop in temperature - The maximum compression ratio in an actual single stage axial flow comperssor is of the order of________________?
A. 1 : 1.2
B. 1 : 2
C. 1 : 5
D. 1 : 10
E. 1 : 1 - The vloumetric efficiency of compressor with increase in compression ratio will ___________________?
A. increase
B. decrease
C. remain same
D. may increase/decrease depending on clearance volume
E. none of the above - The compression ratio in a jet engine varies proportional to ____________________?
A. speed
B. speed
C. altitude
D. Vspeed
E. does not Vary - 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 - The pressure ratio in gas turbines is of the order of__________________?
A. 2:l
b. 4:1
C. 61: 1
D. 9 : 1
E. 12:1.
