A surge tank is provided in a hydropower station to _________.

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Increase the supply of water

Control the water flow in the turbine

Reduce the diameter of the penstock

Control pressure variation in pipes due to sudden load variations.

answer is D.

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Detailed Solution

A surge tank is provided in a hydropower station to control pressure variation in pipes due to sudden load variations.

In hydropower plants with long and complex water conduits, surge tanks are used to lessen pressure forces created during the acceleration of large water masses.

They are built as intermittent water reservoirs near the turbines, either open to atmospheric air or as a closed volume filled with pressurized air.

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