Power–head relationship in reaction turbines For a reaction turbine working under a given set of geometric and efficiency conditions, how does the power produced relate to the head of water? Choose the correct completion.
Mechanical Engineering
Hydraulic Machines
Difficulty: Easy
Choose an option
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AIs inversely proportional to head
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BIs directly proportional to head
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CIs independent of head
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DVaries with the square of head
Answer
Correct Answer: Is directly proportional to head
Explanation
ConceptShaft power ≈ ηoverall · ρ g Q H.
ReasoningFor similar operating conditions (η and Q appropriately related), power scales with head H. At fixed discharge, power is directly proportional to H.
Final AnswerIs directly proportional to head.