Only rocket engines can be propelled to space because - Compressors, Gas Dynamics and Gas Turbines Quiz

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

Only rocket engines can be propelled to space because

they can generate very high thrust

they are not air-breathing engines

they have high propulsion efficiency

these engines can work on several fuels

Correct Answer : Option (B) : they are not air-breathing engines

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.