3) In hydro power stations what is an enlarged body of water just above the intake and used as a regulating reservoir, called ?

4) Location of a surge tank, in an hydroelectric power station, is near :

5) In high head hydroelectric power plant, the velocity of water flow in penstock is around :

6) For variable heads of near about, but less than 30 meters, which type of turbines is used in hydro power stations ?

7) For high head and low discharge, the water turbine used is :