In a gas turbine combined cycle plant, a waste heat boiler is used to
A.heat air from intercooler
B.gases from regenerator
C.recover heat form exhaust gases
D.none of the above
Category: Turbo machines Mcqs
Maximum delivery pressure in case of rotary compressors is usually restricted to
A.2 atmospheres
B.5 atmospheres
C.10 atmospheres
D.20 atmospheres
A constant volume combustion gas turbine operates on
A.Ericsson cycle
B.Brayton cycle
C.Joule cycle
D.Atkinson cycle
In rotary compressors, slip factor is the ratio of
A.stagnation pressure to static pressure
B.isentropic work done to actual work
C.outlet whirl velocity to the blade velocity
D.none of the above
Efficiency of gas turbine is increased by
A.Reheating
B.Intercooling
C.Adding a regenerator
D.All of the above
E.None
Stalling of the blades of axial flow compressor is
A.an unsteady periodic and reversal of flow
B.the fixed mass flow rate regardless of pressure ratio
C.the reduction in lift force at higher angle of incidence
D.none of the above
Greater the difference between jet velocity and aeroplane velocity
A.greater the propulsive efficiency
B.Lesser the propulsive efficiency
C.unaffected is the propulsive efficiency
D.None of the above
The advantage of closed cycle gas turbine over open cycle gas turbine is
A.no contamination of working substance with combustion gases
B.inferior quality fuel can be used
C.low maintenance costs
D.All of the above
Which of the following loss in steam turbines is negligible?
A.Residual velocity loss
B.Leakage loss
C.Mechanical friction loss
D.Radiation loss
Maximum delivery pressure in a rotary air compressor is of the order of
A.6 KSC
B.10 KSC
C.16 KSC
D.25 KSC
E.40 KSC
