Steam Nozzle - Steam Nozzle objective type questions and answers


6. The value of critical pressure ratio for superheated steam is.......


   A.0.5

   B.0.546

   C.0.454

   D.0.64


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B.0.546

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7. The value of critical pressure ratio for initially wet steam is.......


   A.0.546

   B.0.5

   C.0.554

   D.0.582


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D.0.582

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8. The flow of steam is supersonic.........


   A.At the entrance to the nozzle

   B.At the throat of the nozzle

   C.In the convergent portion of the nozzle

   C.In the divergent portion of the nozzle


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D.In the divergent portion of the nozzle

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9. The maximum velocity attainable at the throat of a steam nozzle is......


   A.Much less than sonic velocity

   B.Slightly less then sonic velocity

   C.Sonic velocity

   D.Slightly more than sonic velocity

   E.Supersonic velocity


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C.Sonic velocity

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10. Which of the following devices uses wilson's line in determining flow through it.......


   A. Steam engine

   B.Steam nozzle

   C.Reaction turbine

   D.Impulse turbine


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B.Steam nozzle

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