Q. A gas turbine used in air-craft should have low weight and small frontal area.

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Q. A closed cycle gas turbine works on

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Q. The clearance, in a single stage, single acting reciprocating air compressor does not effect the workdone on the air and the power required for compressing the air.

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Q. Air motors work on the cycle which is the reverse of the reciprocating air compressor cycle.

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Q. Which of the following statement is correct relating to rocket engines ?

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Q. In reciprocating air compressors, isothermal efficiency is used for all sorts of calculations.

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Q. Euler's equation can be used for

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Q. A rocket engine uses __________ for the combustion of its fuel.

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Q. The perfect intercooling, in multistage compression, means that the temperature of air at inlet to subsequent stages is equal to the initial temperature.

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Q. A closed cycle gas turbine consists of a

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Q. For maximum work, the reheating should be done to an intermediate pressure of (where p1 = Maximum pressure, and p2 = Minimum pressure)

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Q. The intercooler pressure, for minimum work required, for a two stage reciprocating air compressor, is given by (where p1 = Intake pressure of air, p2 = Intercooler pressure, and p3 = Delivery pressure of air)

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Q. The pressure of air at the beginning of the compression stroke is __________ the atmospheric pressure.

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Q. The pressure ratio in a centrifugal compressor can be increased by increasing the tip speed and lowering the inlet temperature.

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Q. If p1 is the pressure of air entering the L.P, cylinder and p3 is the pressure of air leaving the H.P. cylinder, then the ratio of cylinder diameters for a single acting, two stage reciprocating compressor with complete intercooling is given by

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Q. Reheating in a gas turbine

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Q. In a single stage, single acting reciprocating air compressor, without clearance, the workdone on the air during isentropic compression is __________ the heat required to raise the temperature of air from T1 to T2 at a constant pressure.

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Q. Workdone by an air compressor __________ upon the way in which the air is compressed.

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Q. In a compressor, work is done on the piston during suction of air and work is done by the piston during compression as well as delivery of air.

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Q. In a compressed air system, the temperature of air discharged from the air motor is __________ than the initial compressor intake temperature.

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