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
Related Mcqs:
- 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 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 - Ram compression in turbojet involves____________________?
A. reduction of speed of incoming air and conversion of part of it into pressure energy
B. compression of inlet air
C. increasing speed of incoming air
D. lost work
E. leakage losses - 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 - 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 - A jet engine works on the principle of conservation of____________________?
A. mass
B. energy
C. flow
D. linear momentum
E. angular momentum - 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 : - In jet engines the compression ratio__________________?
A. varies as square root of the speed
B. Varies linearly to the speed
C. varies as square of the speed
D. varies as cube of the speed
E. is constant irrespective of variation in speed - Maximum temprature in a gas turbine is of the order of COMPRESSORS, GAS TURBINES AND JET ENGINES______________________?
A. 2500°C
B. 2000°C
C. 1500°C
D. 1000°C
E. 700°C - In jet engines the products of combustion after passing through the gas lurbine are discharged into_______________?
A. atmosphere
B. back to the compressor
C. discharge nozzle
D. vacuum
E. none of the above
