Question

The minimum level of water in the reservoir of hydroelectric dam is:

Answer 1

The name hydro itself suggests the water and electric means the electricity. Thus the purpose of hydroelectric dams is to generate electricity with the help of water. That is the water stored in the reservoir is then allowed to flow through the turbine and as a result of the spinning in the turbine, activates the generator and thereby produces electricity.

Complete step-by-step solution:
The impoundment facility is the most commonly used type of hydroelectric power plant. For this type of facility a large hydropower system is required. In impoundment facilities the river water is stored in a dam like reservoir. And also a turbine is used for the spinning of water as when it is released from the reservoir. That is the water from the reservoir is then allowed to flow through the turbine and as a result of the spinning in the turbine, activates the generator and thereby produces electricity. Hence a constant level of water is maintained in the reservoir which is equal to 34m.
Therefore the minimum level of water in the reservoir of the hydroelectric dam is 34m.

Note: The energy which is possessed by the water in a reservoir is potential energy. Because in a hydroelectric power plant the water is in a reservoir at a certain height. And when the water falls and is allowed to flow through the turbine the gravitational potential energy is then converted into kinetic energy.