Q. When the back pressure of a nozzle is below the designed value of pressure at exit of nozzle, the nozzle is said to be

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Q. The ratio of the workdone on the blades to the energy supplied to the blades, is called

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Q. The discharge is __________ at critical pressure.

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Q. The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop

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Q. The steam leaves the nozzle at a

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Q. The variation of steam pressure in the nozzle depends upon

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Q. Steam turbines are used for

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Q. Parson's turbine is a

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Q. The value of the reheat factor varies from

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Q. The steam enters the nozzle at a

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Q. The difference of supersaturated temperature and saturation temperature at that pressure is called

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Q. The maximum efficiency of a reaction turbine is

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Q. The ratio of the useful heat drop to the isentropic heat drop is called

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Q. The efficiency of steam turbines may be improved by

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Q. In a reaction turbine, when steam flows through the fixed blades,

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Q. The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)

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Q. The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.

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Q. The velocity of steam leaving the nozzle (V) is given by (where K = Nozzle coefficient or nozzle efficiency, and hd = Enthalpy or heat drop during expansion of steam in a nozzle)

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Q. In a nozzle, whole frictional loss is assumed to occur between

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Q. The critical pressure ratio for initially wet steam is

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