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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.

Equal to
None of these
More than
Less than

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Compressors, Gas Turbines and Jet Engines
The volume of air delivered in a medium capacity air compressor per unit time is

None of these
Above 5 m³/s
0.15 to 5 m³/s
0.1 to 1.2 m³/s

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Compressors, Gas Turbines and Jet Engines
Volumetric efficiency is

Reciprocal of compression ratio
Index of compressor performance
The ratio of the air actually delivered to the amount of piston displacement
The ratio of stroke volume to clearance volume

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

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

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Compressors, Gas Turbines and Jet Engines
A rocket engine for the combustion of its fuel

Carries its own oxygen
Does not require oxygen
Uses compressed atmospheric air
Uses surrounding air

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Compressors, Gas Turbines and Jet Engines
Ratio of indicated H.P. and brake H.P. is known as

Adiabatic efficiency
Volumetric efficiency
Isothermal efficiency
Mechanical efficiency

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