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With reference to Turbo- jet and Rocket engines, consider the following statements:

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In a normal shock in a gas

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For a jet propulsion unit, ideally the ratio of compressor work and turbine work is

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Match List I (Flow properties) with List II (Mode of changes)

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Acoustic velocity in an elastic gaseous medium is proportional to

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The fluid property that remains unchanged across a normal shock wave is

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The propulsive efficiency is

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The efficiency of jet engine is

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The propulsive efficiency of a turbojet aircraft approaches 100% when the thrust approaches

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The use of turbo- prop engine is limited to

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Mach angle $\alpha$ and mach number M are related as:

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Propulsion efficiency of propeller drive aircraft is

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A bypass jet engine gives a better propulsive efficiency and better fuel economy

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Which of the following pairs of engine and performance/ characteristic is/.are correctly matched?

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The propulsive efficiency is

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The mach number is less than 1 at a point where the entropy is

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The mach number of the flow corresponding to the maximum entropy will be

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A typical value of this critical Mach number is of the order of

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Propulsion efficiency of a jet engine is given by

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