Correct option is A
· The water hammer phenomenon in a hydroelectric power plant occurs due to sudden changes in the flow of water, causing pressure surges in the pipeline.
· This can lead to damage and operational issues. A surge tank is a protective measure that helps mitigate these pressure surges by absorbing the sudden rise in pressure and allowing for a more gradual adjustment in the flow rate.
Conduit: This is simply a channel or pipe for conveying water but does not address the issue of water hammer directly.
Forbey: This term is not typically associated with hydroelectric power plants or the mitigation of water hammer.
Spillway: This is a structure used to control the release of water from a dam or reservoir to downstream areas, primarily to prevent overflow and flooding. It does not address the water hammer phenomenon.
Therefore, the correct measure to avoid the water hammer phenomenon in a hydroelectric power plant is to provide a surge tank, making surge tank the correct answer.