Hydraulic Machines Multiple Choice Questions and Answers


21. A draft tube is used with .......


   A.Impulse turbine

   B.Pelton wheel turbine

   C.Reaction turbine

   D.Very high specific speed turbine

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C.Reaction turbine

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22. The angle of taper on draft tube is .......


   A.Greater than 15

   B.Greater than 8

   C.Greater than 5

   D.Less than 8


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D.Less than 8

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23. Specific speed of a turbine depends upon .........


   A.Speed,power and discharge

   B.Discharge and power

   C.Speed and heat

   D.Speed,discharge and heat

   D.Speed, power and heat


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E.Speed, power and heat

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24. An impulse turbine......


   A.Operates submerged

   B.Requires draft tube

   C.Is most suited for low head application

   D.Operates by initial complete conversion to kinetic energy


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D.Operates by initial complete conversion to kinetic energy

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25. Pelton wheels are used for minimum of following heads......


   A.20 m

   B.100 m

   C.125 m

   D.180 m or above

✔ View Answer


D.180 m or above

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