In case of a Medium runner, tan (α1) CANNOT be given by (α1 = Guide vane angle at inlet)?

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📊 Fluid Mechanics and Machinery

Q. In case of a Medium runner, tan (α1) CANNOT be given by (α1 = Guide vane angle at inlet)?

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✅ Correct Answer: (D) vw1 / u1

Explanation: in medium runner, vf1 = vr1 & vw1 = u1. vw1 and u1 are along the same direction, hence that cannot be written as tan (α1).

in medium runner, vf1 = vr1 & vw1 = u1. vw1 and u1 are along the same direction, hence that cannot be written as tan (α1).

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