In turbo fan engine, the jet velocity as compared to turbo-jet engine is_________________?

Related Mcqs:

1. 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...

2. In air breathing jet engine, the jet is formed by expanding__________________?

   A. gases B. solids C. liquid D. plasma E. highly heated atmospheric air...

3. 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...

4. The jnaximum combustion pressure in gas turbine as compared to I.C. engine is_________________?

   A. more B. less C. same D. depends on other factors E. unpredictable...

5. A jet engine works on the principle of conservation of____________________?

   A. mass B. energy C. flow D. linear momentum E. angular momentum...

6. 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 :...

7. 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...

8. The compression ratio in a jet engine varies proportional to ____________________?

   A. speed B. speed C. altitude D. Vspeed E. does not Vary...

9. If V, U and Vr represent the absolute velocity of fluid, velocity of blade, and relative velocity of fluid, and suffix i and o stand for entry and exit conditions, then in a rotary machine whose degree of reaction is unity______________?

   A. Vi=V0B B. Vt>V0 C. U,<V0 D. V,= U0 E. Vri=Vm...

10. The air entry velocity m a rocket as compared to aircraft is_________________?

    A. same B. more C. less D. zero E. dependent on power and speed...