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

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

A jet engine works on the principle of conservation of____________________?

A. Mass
B. Energy
C. Flow
D. Linear momentum

Which of the following fuels can be used in turbojet engines _____________________?

A. Liquid hydrogne
B. High speed diesel oil
C. Kerosene
D. Demethylated spirit

A rocket engine for the combustion of its fuel_____________________?

A. Carries its own oxygen
B. Uses surrounding air
C. Uses compressed atmospheric air
D. Does not require oxygen

Propulsive efficiency is defined as ratio of___________________?

A. Thrust power and fuel energy
B. Engine output and propulsive power
C. Propulsive power and fuel input
D. Thrust power and propulsive power

In the cross compounding of the gas turbine plant__________________?

A. H.p. compressor l connected to h.p. turbine and l.p. compressor ot l.p. tur-bine
B. H.p. compressor is connected to l.p. turbine and l.p. compressor is con-nected to h.p. turbine
C. Both the arrangements can be employed
D. All are connected in series

A rocket works with maximum overall efficiency when air craft velocity is equal to the_________________?

A. Jet velocity
B. Twice the jet velocity
C. Half the jet velocity
D. Average of the jet velocity

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

Propulsion efficiency of the following order-is obtained in practice _______________?

A. 34%
B. 50%
C. 60%
D. 72%