Which of the following is a displacement compressors?
A.Reciprocating air compressor
B.Vane blower
C.Centrifugal blower
D.Axial flow compressors
Category: Turbo machines Mcqs
Which of the following rotary compressor has two shafts?
A.Axial flow compressor
B.Sliding vane compressor
C.Centrifugal compressor
D.Lobe type compressor
In which of the following heat exchanger, heat is extracted from air?
A.Regenerator
B.Reheater
C.Intercooler
D.All of the above
Thermal efficiency of closed cycle gas turbine plant increases by
A.reheating
B.intercooling
C.regenerator
D.All of the above
Which gas turbine has lest weight per bhp developed?
A.Simple open cycle gas turbine
B.Open cycle gas turbine with intercooling and reheating
C.Open cycle gas turbine with intercooling, reheating and regeneration
D.Closed cycle gas turbine
The following property is the most important for material used for gas turbine blades
A.Fatigue
B.Strength against bending
C.Group
D.Strength against direct force
In a two stage gas turbine plant, reheating after first stage
A.increases work ratio
B.decreases work ratio
C.does not affect work ratio
D.none of the above
With ideal regencrative heat exchanger, the thermal efficiency of gas turbine cycle is
A.equal to work ratio
B.is less than work ratio
C.is more than work ratio
D.none of the above
Overall efficiency of a gas turbine is
A.equal to Rankine cycle efficiency
B.equal to Carnot cycle efficiency
C.less than Diesel cycle efficiency
D.more than Otto or Diesel cycle efficiency
An axial flow compressor is suitable for
A.high volume flow rates with a small pressure rise
B.high volume flow rates with high pressure rise
C.low volume flow rates with low pressure rise
D.low volume flow rates with high pressure rise
