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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.

Q: 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.

Concept Unit speed Nu = N / √H (constant for similar operation). Result Therefore N ∝ √H = H1/2. Final Answer N ∝ H1/2

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 Answer
N ∝ H^1/2

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