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A jet engine works on the principle of conservation of

A. Mass

B. Energy

C. Flow

D. Linear momentum

Correct Answer : D.


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  1. In axial flow compressor, exit flow angle deviation from the blade angle is a function of
  2. In a jet propulsion
  3. The velocity of air entering in a rocket is ________ as compared to an aircraft.
  4. In a single acting reciprocating compressor, the suction, compression and delivery of air takes place…
  5. Which of the following plants is smallest and lightest for generating a given amount of power?
  6. An ideal air compressor cycle with clearance on PV diagram can be represented by following processes
  7. When the temperature of air leaving the intercooler, in a two stage compression with intercooler, is…
  8. Reheating in gas turbine results in
  9. The power available for takeoff and climb in case of turbojet engine as compared to reciprocating engine…
  10. In a double acting compressor, the air is compressed
  11. Isothermal compression though most efficient, but is not practicable because
  12. In the cross compounding of the gas turbine plant
  13. The workdone on a compressor will be minimum if air is taken from
  14. Pick up wrong statement. Surging phenomenon in centrifugal compressor depends on
  15. If infinite number of heaters be used in a gas turbine, then expansion process in turbine approaches
  16. The temperature of air at the beginning of the compression stroke is ________ the atmospheric temperature.
  17. A rocket engine uses ________ for the combustion of its fuel.
  18. An ideal air compressor cycle without clearance on PV diagram can be represented by following processes
  19. The maximum compression ratio in an actual single stage axial flow compressor is of the order of
  20. The overall isothermal efficiency of compressor is defined as the ratio of
  21. Compression efficiency is compared against
  22. The ratio of isentropic work to Euler work is known as
  23. Which of the following statement is correct?
  24. Ratio of indicated h.p. to shaft h.p. in known as
  25. Propulsive efficiency is defined as ratio of
  26. Open cycle gas turbine works on
  27. Pressure ratio in gas turbines is the ratio of
  28. Reheating in a multistage expansion gas turbine __________ compressor work.
  29. Efficiency of gas turbine is increased by
  30. The main purpose of reheating in gas turbine is to