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Q. |
have the highest vane angle at inlet (β1 value)? |
A. | slow runner |
B. | medium runner |
C. | fast runner |
D. | vane angle is defined only for kaplan turbines and not francis turbines |
Answer» C. fast runner | |
Explanation: considering the velocity diagram of francis turbine at the inlet for a fast runner, vane angle is an obtuse angle. whereas, it is right angle for medium runner and an acute angle for a slow runner. |
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