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Steam Nozzles and Turbines
In order to reduce the rotor speed of an impulse turbine, the method employed is
velocity compounding
pressure compounding
pressure-velocity compounding
all of these
Correct Answer:
all of these
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Steam Nozzles and Turbines
De-Laval turbines are mostly used
Blading efficiency is also known as
The Rankine efficiency depends upon total useful heat drop and total isentropic heat drop.
The critical pressure ratio for initially dry saturated steam is
The ratio of the work delivered at the turbine shaft to the heat supplied is called overall thermal efficiency of turbine.
The process of maintaining the speed of the turbine constant for various load conditions, is known as
The maximum discharge of steam through a convergent-divergent nozzle depends upon
The pressure of steam, in reaction turbines, is reduced in the fixed blades as well as in moving blades.
The ratio of the energy supplied to the blades per kg of steam to the total energy supplied per stage per kg of steam is called mechanical efficiency.
The pressure of steam at throat of a steam nozzle is called critical pressure.
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