Mechanical Engineering :: Steam Nozzles and Turbines
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In order to reduce the rotor speed of an impulse turbine, the method employed is
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The nozzle efficiency is the ratio of
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The friction in the nozzle __________ exit velocity of steam.
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In a reaction turbine
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A stage, in reaction turbine, is represented by
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When the nozzle operates with the maximum mass flow, the nozzle is said to be
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In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
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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.
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A steam nozzle converts
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The maximum discharge of steam through a convergent-divergent nozzle depends upon
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A.
the steam is allowed to expand in the nozzle, where it gives a high velocity before it enters the moving blades |
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B.
the expansion of steam takes place partly in the fixed blades and partly in the moving blades |
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C.
the steam is expanded from a high pressure to a condenser pressure in one or more nozzles |
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D.
the pressure and temperature of steam remains constant |