A rocket works with maximum overall efficiency when air craft velocity is equal to the_________________?

Related Mcqs:

Cylinder clearance in a compressor should be _________________?

A. as large as possible B. as small as possible C. about 50% of swept volume D. about 100% of swept volume E. none of the above...

For a compressor, least work will be done if the compression is________________ ?

A. isentropic B. isothermal C. polytropic D. somewhere in between isentropic and isothermal E. none of the above...

Pick up the wrong statement ?

A. centrifugal compressors deliver prac-tically constant pressure over a considerable range of capacities B. Axial flow compressors have a sub-stantially constant delivery at variable pressures C. centrifugal compressors have a wider stable operating range than axial flow compressors D. axial flow compressors are bigger in diameter compared to centrifugal type E. axial flow compressors apt … Pick up the wrong statement ?Read More...

As the turbine inlet temperature increases, the thermal efficiency of gas turbine for the optimum pressure ratio_____________________?

A. increases B. decreases C. remains same D. first increases and then decreases E. first decreases and then increases...

In jet propulsion power unit, the inlet duct of diverging shape is used in order to _______________ ?

A. collect more air B. convert kinetic energy of air into pres-sure energy C. provide robust structure D. beautify the shape E. none of the above...