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Which type of turbine is commonly used in tidal energy?

(a) Francis turbine

(b) Kaplan turbine

(c) Pelton wheel

(d) Gorlov turbine

The question was asked during an interview.

This intriguing question originated from Tidal Energy in portion Ocean Energy & Geothermal Energy of Energy Engineering

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Best answer
The correct answer is (b) Kaplan turbine

To elaborate: The Kaplan turbine is a propeller type reaction turbine that is usually immersed completely in the fluid it derives energy from. A Kaplan turbine is beneficial in that it is able to operate in lower pressure situations where Pelton or Francis turbines cannot.

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