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

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Water wheels: driving cause in overshot wheels For overshot water wheels, the wheel runs primarily due to which action of water? Choose the correct completion.

Difficulty: Easy

Impulse of water
Weight of water
Viscosity of water
Surface tension of water

Correct Answer: Weight of water

Explanation:

ConceptOvershot wheels are filled at the top; the descending water in the buckets provides torque mainly by its weight (potential energy conversion).

ContrastUndershot wheels rely more on the impulse (kinetic energy) of flowing water.

Final AnswerWeight of water.

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