Related Questions

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
The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
A 40%
B 50%
C 60%
D 80%
Each of the following problem has a question and two statements which are labeled 1. and. Use the data given in 1. and 2. to decide whether the statements are sufficient to answer the question.Select one of the following . a.Statements (1) ALONE is sufficient,but (2) ALONE is not sufficient. b.Statements (2) ALONE is sufficient,but (1) ALONE is not sufficient. c. Both statement TOGETHER are sufficient but statement alone is sufficient . A fly crawls around the outside of a circle once.A second fly crawls around the outside of a square once.Which fly travels further ? (1) The diagonal of the square is equal to the diagonal of the circle.(2) The fly crawling around the circle took more time to complete has journey than the fly cawing around the square.
A A
B B
C C
D D
If Bashar can run around a ground four times in 20 minutes and Rahim can run around the same ground three times in 12 minutes, who can run around that ground more times in an hour, and how many times more can he run around ?
A Bashar, three times more
B Rahim , three times more
C They both go around 12 times
D Bashar, eight times more
Which of the following fuels can be used in turbojet engines?
A Liquid hydrogen
B High speed diesel oil
C Kerosene
D Methyl alcohol
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
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 turbine of the turboprop engine is __________ that of the turbojet engine.
A Same as
B Smaller than
C Bigger than
D None of these
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 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

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