Related Questions

A turboprop is preferred to turbojet because
A It has high propulsive efficiency at high speeds
B It can fly at supersonic speeds
C It can fly at high elevations
D It has high power for take off
The power available for takeoff 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 conditions
In turbo fan engine, the jet velocity as compared to turbojet engine is
A Less
B More
C Same
D May be less or more depending upon speed
In open cycle turbojet engines used in military aircraft, reheating the exhaust gas from the turbine by burning, more fuel is used to increase the
A Thrust and range of aircraft
B Efficiency of the engine
C Both (A) and (B)
D None of these
The maximum propulsive efficiency of a turbojet engine is at a speed of
A 1000 km/h
B 2000 km/h
C 2400 km/h
D 3000 km/h
A simple turbojet engine is basically
A A propeller system
B Gas turbine engine equipped with a propulsive nozzle and diffuse
C Chemical rocket engine
D Ramjet engine
The maximum propulsion efficiency of a turbojet is attained at around following speed
A 550 km/hr
B 1050 km/hr
C 1700 km/hr
D 2400 km/hr
Which of the following fuels can be used in turbojet engines?
A Liquid hydrogen
B High speed diesel oil
C Kerosene
D Methyl alcohol
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
The specific speed of a turbine is the speed of an imaginary turbine, identical with the given turbine, which
A Delivers unit discharge under unit head
B Delivers unit discharge under unit speed
C Develops unit power under unit head
D Develops unit power under unit speed

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