Effective head in a pipeline/turbine installation: compute net head from gross head and friction loss Let H g be the gross (total) head and h f be the head loss due to friction in the conveyance system. Write the expression for …

Q: Effective head in a pipeline/turbine installation: compute net head from gross head and friction loss Let H g be the gross (total) head and h f be the head loss due to friction in the conveyance system. Write the expression for …

Concept Losses (e.g., pipe friction, fittings) reduce the head available to the runner. Computation Net head: H = Hg − hf. Final Answer H = Hg − hf.

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Effective head in a pipeline/turbine installation: compute net head from gross head and friction loss Let H<sub>g</sub> be the gross (total) head and h<sub>f</sub> be the head loss due to friction in the conveyance system. Write the expression for the net or effective head H reaching the turbine. Choose the correct formula.

Difficulty: Easy

H = H_g / h_f
H = H_g × h_f
H = H_g + h_f
H = H_g − h_f

Correct Answer: H = H_g − h_f

Explanation:

Concept
Losses (e.g., pipe friction, fittings) reduce the head available to the runner.

Computation
Net head: H = H_g − h_f.

Final Answer
H = H_g − h_f.

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