Ans: Few advantages of hydroelectric power plant are listed below:- 1. The hydraulic turbine can be switched off and on in a very short time. In a thermal or nuclear power plant the steam turbine is put on turning gear for about two days during start-up and shut-down. 2. The hydraulic power plant is relatively simple in concept and self-contained in operation, its system reliability is much greater than other power plants. 3. Modern hydro-generators give high efficiency over a considerable range of load. This helps in improving the system efficiency. 4. Being simple in design and operation, the hydro-plants do not require highly skilled workers. Man power required is also low. 5. Modern hydropower equipment has a greater life expectancy and easily lasts long.