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Compressors, Gas Turbines and Jet Engines

Compressors, Gas Turbines and Jet Engines
The work-done on a compressor will be minimum if air is taken from

A source at 0° C
A source of low temperature air
A source of high temperature air
The atmosphere

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Compressors, Gas Turbines and Jet Engines
The maximum combustion pressure in gas turbine as compared to I.C. engine is

Depends on other factors
Same
Less
More

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

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Compressors, Gas Turbines and Jet Engines
When air is to be compressed at a high pressure, then it is advantageous to use

Multistage compression without intercooling
None of these
Multistage compression with intercooling
Single stage compression

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

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

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Compressors, Gas Turbines and Jet Engines
Air-fuel ratio in a jet engine will be of the order of

2.5006944444444
0.41736111111111
0.62569444444444
0.83402777777778

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