A. 10: 1
B. 15: 1
C. 20 : 1
D. 60 : 1
E. 100 :
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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...
- In jet engines, for the efficient production of large power, fuel is burnt in an atmosphere of__________________?
- A. vacuum B. atmospheric air C. compressed air D. oxygen alone E. liquid hydrogen...
- The compression ratio in a jet engine varies proportional to ____________________?
- A. speed B. speed C. altitude D. Vspeed E. does not Vary...
- The air-fuel ratio in gas turbines is of the order of ______________________?
- A. 7 : 1 B. 15 : 1 C. 30 : 1 D. 40 : 1 E. 50: 1...
- A closed gas turbine in which fuel is burnt directly in the air is not possible because of__________________?
- A. high pressure ratio B. increasing gas temperature C. high specific volume D. high friction losses E. paucity of 02...
- A jet engine works on the principle of conservation of____________________?
- A. mass B. energy C. flow D. linear momentum E. angular momentum...
- 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...
- 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...
- 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...
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