Mechanical Engineering :: Steam Nozzles and Turbines
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In a nozzle, the effect of supersaturation is to
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Which of the following statement is correct?
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The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ number of stages are required.
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If the critical pressure ratio for steam is 0.546, then the steam is initially
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Which of the following statement is wrong?The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
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A.
The critical pressure gives the velocity of steam at the throat equal to the velocity of sound. |
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B.
The flowin the convergent portion of the nozzle is sub-sonic. |
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C.
The flow in the divergent portion of the nozzle is super-sonic. |
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D.
To increase the velocity of steam above sonic velocity (super-sonic) by expanding steam below the critical pressure, the divergent portion for the nozzle is not necessary. |