61. In an axial flow compressor, the ratio of pressure in the rotor blades to the pressure rise in the compressor in one stage is known as
62. A rocket engine for the combustion of its fuel
63. The ratio of the volume of free air delivery per stroke to the swept volume of the piston, is known as
64. More than one stage will be preferred for reciprocating compressor if the delivery pressure is more than
65. In a centrifugal compressor, an increase in speed at a given pressure ratio causes
66. The clearance volume of the air compressor is kept minimum because
67. Which is false statement about multistage compression?
68. The following is true for an open cycle gas turbine having exhaust heat exchanger. Atmospheric air before entering the compressor is
69. If the flow of air through the compressor is parallel to its axis, then the compressor is
70. Surging is the phenomenon of
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