A. liquid hydrogne
B. high speed diesel oil
C. kerosene
D. demethylated spirit
E. methyl alcohol
Related Mcqs:
- Turbo propeller has the following additional feature over the turbojet __________________?
A. peopeller
B. diffuser
C. intercooler
D. turbine and combustion chamber
E. starting engine - The maximum propulsion efficiency of a turbojet is attained at around following speed __________________?
A. 550 km/hr
B. 1050km/hr
C. 1700 km/hr
D. 2400km /hr
E. 4000 km/hr - 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 - 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 - Mechanical efficiency of gas turbines as compared to I.C engines is____________________?
A. higher
B. lower
C. same
D. depends on on odier considerations
E. unpredictable - The ratio of specific weighf/h.p. of gas turbin and I.C engines may be typically of the order of_______________________?
A. 1 : 1
B. 2 : 1
C. 4 : 1
D. 1:2
E. 1 : 6 - It is not possible to use closed gas turbine cycle in aeronautical engines because_________________ ?
A. it is inefficient
B. it is bulky
C. it requires cooling water for its operation
D. non of theses - 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 - 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
