Q. In a reaction turbine

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Q. A stage, in reaction turbine, is represented by

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Q. A single stage turbine is not used because it requires large reduction gearing due to very high rotational speed.

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Q. In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is

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Q. A nozzle is said to be a convergent-divergent nozzle, when the cross-section of a nozzle first decreases from its entrance to throat and then increases from its throat to exit.

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Q. In an impulse reaction turbine, the pressure drops gradually and continuously over

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Q. When the inlet pressure of steam is equal to the exit pressure, then

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Q. In velocity compounding of an impulse turbine, the expansion of steam takes place in a nozzle or a set of nozzles from the boiler pressure to condenser pressure.

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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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