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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in ________ of the piston.

Two strokes
Four strokes
Three strokes
One stroke

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Compressors, Gas Turbines and Jet Engines
Maximum delivery pressure is a rotary air compressor is of the order of

25 kg/cm²
6 kg/cm²
10 kg/cm²
16 kg/cm²

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Compressors, Gas Turbines and Jet Engines
Maximum work is done in compressing air when the compression is

Polytropic
None of these
Isothermal
Adiabatic

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Compressors, Gas Turbines and Jet Engines
Standard air is the air at ___ and relative humidity of 36 percent.

1 bar and 40°C
0.1 bar and 20°C
0.1 bar and 40°C
1 bar and 20°C

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Compressors, Gas Turbines and Jet Engines
Ram compression in turbojet involves

Lost work
Reduction of speed of incoming air and conversion of part of it into pressure energy
Increasing speed of incoming air
Compression of inlet air

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Compressors, Gas Turbines and Jet Engines
The air entry velocity m a rocket as compared to aircraft is

Same
Less
More
Zero

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