A. mass
B. energy
C. flow
D. linear momentum
E. angular momentum
Related Mcqs:
- In turbo fan engine, the jet velocity as compared to turbo-jet engine is_________________?
A. less
B. more
C. same
D. may be less or more depening upon speed
E. none of the above - In air breathing jet engine, the jet is formed by expanding__________________?
A. gases
B. solids
C. liquid
D. plasma
E. highly heated atmospheric air - Air-fuel ratio in a jet engine will be of the order of__________________?
A. 10: 1
B. 15: 1
C. 20 : 1
D. 60 : 1
E. 100 : - The efficiency of jet engine is__________________?
A. higher at ground
B. higher at high altitudes
C. same at all altitudes
D. higher at high speed
E. lower at low speed - The compression ratio in a jet engine varies proportional to ____________________?
A. speed
B. speed
C. altitude
D. Vspeed
E. does not Vary - A simple turbo-jet engine is basically_________________?
A. a propeller system
B. gas-turbine engine equipped with a propulsive nozzle and diffuse*
C. chemical rocket regine
D. ram-jet enigne
E. none of the above - The power available for take off and climb in case of turbojet engine as compared to reciprocating engine is ___________________?
A. less
B. more
C. same
D. may be less or more depending on ambient conditons
E. unpredictable - A centrifugal compressor works on the principle of__________________?
A. conversion of pressure energy into kinetic energy
B. conversion of kinetic energy into pres¬sure energy
C. centripetal action
D. generating pressure directly
E. combination of A. and D. - In jet engines, paraffin is usually used as the fuel because of its _________________?
A. high calorific value
B. ease of atomisation
C. low freezing point
D. A. and C. above
E. none of the above - Ram-jet engine__________________?
A. is self-operating at zero flight speed
B. is not self-operating at zero^flight speed
C. requires no air for its operation
D. produces a jet consisting of plasma
E. none of the above
