A rocket works with maximum overall efficiency when air-craft velocity is __________ the jet velocity. - Compressors, Gas Dynamics and Gas Turbines Quiz

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

A rocket works with maximum overall efficiency when air-craft velocity is __________ the jet velocity.

equal to

one-half

double

None of the above

Correct Answer : Option (B) : one-half

Recently Updated in Compressors, Gas Dynamics and Gas Turbines Questions

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.