The compression ratio for the compressor is always _________ unity. - Compressors, Gas Dynamics and Gas Turbines Quiz

Mechanical Engineering : Compressors, Gas Dynamics and Gas Turbines - Quiz(MCQ)

The compression ratio for the compressor is always _________ unity.

Equal to

Less than

More than

None of the above

Correct Answer : Option (C) : More than

Explanation : The compression ratio is simply the ratio of the absolute stage discharge pressure to the absolute stage suction pressure.

The compression ratio for the compressor is always More than unity.

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The work ratio of simple gas turbine cycle depends on

Pressure ratio

Minimum cycle temperature

Maximum cycle temperature

All of the above

Correct Answer : All of the above

Knudsen number ranges in between 0.3 and 1 in ________

boundary region

boundary & transient region

transient region

None of the above

Correct Answer : transient region

Explanation : Knudsen number ranges in between 0.3 and 1 in transient region.

When altitude of earth is in between 90 km and 150 km Knudsen number can be in between 0.3 and _________

Correct Answer : 1

Explanation : When altitude of earth is in between 90 km and 150 km Knudsen number can be in between 0.3 and 1.

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