Solve this multiple-choice question and choose the correct option.

Turbine runner speed–head relation For dynamically similar turbines, how does runner speed N vary with available head H? Assume unit-speed similarity criteria apply. Choose the correct proportionality.

Difficulty: Easy

N ∝ H^1/2
N ∝ H^−1/2
N ∝ H^3/2
N ∝ H^−3/2

Correct Answer: N ∝ H^1/2

Explanation:

Concept Unit speed N_u = N / √H (constant for similar operation).

Result Therefore N ∝ √H = H^1/2.

Final AnswerN ∝ H^1/2

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