Recent questions in IES Objectives-1

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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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As compare to turbo- prop, a turbo- jet

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

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Under which one of the following sets of conditions will a supersonic compressor have the highest efficiency?

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The flight mach number of the aircraft is

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In normal shock in a gas, the

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The prime parameter causing change of state in a Fanno flow is

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In the case of Fanno line flow, in the subsonic region friction causes

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Compared to a turbo- jet engine, a turbo- prop engine has a higher power for take – off

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