Q. In a jet propulsion unit, the products of combustion after passing through the gas turbine are discharged into

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Q. The workdone on a compressor will be minimum if air is taken from

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Q. A compressor mostly used for supercharging of I.C. engines is

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Q. The velocity of air entering in a rocket is __________ as compared to an aircraft.

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Q. A regenerator in a gas turbine improves thermal efficiency.

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Q. The ratio of the discharge pressure to the inlet pressure of air is called

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Q. The free air delivery is the volume of air that can be delivered by a compressor freely.

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Q. In a two stage reciprocating compressor with intercooler, the amount of work saved with incomplete intercooling is __________ that in case of complete intercooling.

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Q. Reheating in a multi-stage expansion gas turbine __________ compressor work.

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Q. The volumetric efficiency of a compressor

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Q. The efficiency of the vane blower is (where W1 = Workdone due to compression, and W2 = Workdone due to back flow)

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Q. For perfect intercooling in a two stage compressor,

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Q. The volume of air sucked by the compressor during its suction stroke is called

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Q. Volumetric efficiency of a compressor decreases with __________ in compression ratio.

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Q. If the clearance ratio for a reciprocating air compressor is 'K', then its volumetric efficiency is given by

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Q. A compressor must be driven by some prime mover.

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Q. A centrifugal compressor is an axial flow compressor.

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Q. The volumetric efficiency of the compressor is defined as the ratio of volume of free air delivery per stroke to the swept volume of the piston.

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Q. The thrust of a jet propulsion power unit can be increased by

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Q. For minimum work in multi-stage compression, the workdone on all stages should be equal.

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