GATE ME 2016 Set 1 — Question 28
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Turbomachinery → Hydraulic Turbines & Pumps → Specific Speed
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Question
Consider two hydraulic turbines having identical specific speed and effective head at the inlet. If the speed ratio () of the two turbines is 2, then the respective power ratio () is _____________
Correct answer
0.24 to 0.26
Solution
The specific speed of a turbine is given by:Since both turbines have identical specific speed () and effective head ():Given the speed ratio , we have .
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