Q. The critical pressure ratio is given by (where p1 = Initial pressure of steam, and p2 = Pressure of steam at throat or critical pressure)

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Q. A steam turbine, in which a part of the steam after partial expansion, is used for process heating and the remaining steam is further expanded for power generation, is known as

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Q. The stage efficiency is the ratio of energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam.

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Q. Stage efficiency is also known as

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Q. Degree of reaction is defined as the ratio of

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Q. The expansion of steam in a nozzle follows

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Q. The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.

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Q. The effect of bleeding is that

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Q. The expansion of steam, as it flows over the blades in reaction turbine, represents

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Q. The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.

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Q. For a Parson's reaction turbine, if α1 and α2 are fixed blade angles at inlet and exit respectively and β1 and β2 are the moving blade angles at entrance and exit respectively, then

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Q. The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)

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Q. The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.

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Q. In a reaction turbine when the degree of reaction is zero, then there is

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Q. The effect of friction in the nozzle __________ dryness fraction of steam.

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Q. In a Parson's turbine stage, blade velocity is 320 m/s at the mean radius and rotor blade exit angle is 30°. For minimum kinetic energy of the steam leaving the stage, the steam velocity at the exit of the rotor will be

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Q. In a nozzle, the effect of supersaturation is to

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Q. Which of the following statement is correct?

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Q. The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ number of stages are required.

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Q. If the critical pressure ratio for steam is 0.546, then the steam is initially

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