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81.

Maximum delivery pressure in a rotary air compressor is of the order of

82.

Efficiency of gas turbine is increased by

83.

Most serious energy loss in reaction steam turbine

A.	Steam leakage between diaphragm and shaft	B.	Leakage over blade ends through radia clearance passages
C.	Frictional resistance between steam and nozzle side	D.	Impact loss as steam enters moving blades
E.	Bearing friction

84.

Basic closed cycle for gas turbine is

A.	Carnot cycle	B.	Rankine cycle
C.	Brayton cycle	D.	none of the above

85.

The work ratio of closed cycle gas turbine plant with fixed top temperature of the cycle and fixed pressure ratio rp

A.	increases with increase in an inlet temperature to compressor	B.	increases with decrease in an inlet temperature to compresor
C.	remain same irrespective of inlet temperature to compressor	D.	none of the above

86.

Thermal efficiency of closed cycle gas turbine plant increases by

A.	reheating	B.	intercooling
C.	regenerator	D.	All of the above

87.

With increase in pressure ratio, thermal efficiency of a simple gas turbine plant with fixed turbine inlet temperature

A.	increases	B.	decreases
C.	first increases and then decreases	D.	none of the above

88.

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

89.

In a two stage gas turbine plant reheating after first stage

A.	increases thermal efficiency	B.	decreases thermal efficiency
C.	doesoes not affect thermal efficiency	D.	none of the above

90.

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