Q. De-Laval turbines are mostly used

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Q. The velocity of steam, in reaction turbines, is increased in the fixed blades as well as in moving blades.

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Q. The critical pressure ratio for gases is

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Q. The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.

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Q. The effect of supersaturation is that the

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Q. The effect of friction on the flow of steam through a nozzle is to

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

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Q. The diagram efficiency is the ratio of

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Q. The Rankine efficiency depends upon total useful heat drop and total isentropic heat drop.

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Q. Blading efficiency is also known as

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Q. The pressure of steam, in reaction turbines, is reduced in the fixed blades as well as in moving blades.

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Q. A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be

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Q. In a De-Laval impulse turbine, the nozzle is kept very close to the blades.

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Q. The flow of steam is super-sonic

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Q. The pressure of steam at throat of a steam nozzle is called critical pressure.

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Q. For maximum efficiency of an impulse turbine, the steam should leave the blades at right angles to their motion.

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Q. De-Laval turbine is a

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Q. The impulse turbine rotor efficiency will have a maximum value of 0.5 cos² α, where α is the nozzle exit flow angle, if the

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Q. When the cross-section of a nozzle increases continuously from entrance to exit, it is called a

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Q. Rateau turbine is

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