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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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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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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25. Pelton wheels are used for minimum of following heads......
A.20 m
B.100 m
C.125 m
D.180 m or above
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