The diagram below shows how electricity is generated in a hydroelectric power station. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The figure describes how the kinetic energy of stored

water

in a dam is used to run a

turbine

to produce electric power in a hydroelectric powerhouse. The

water

obtained from downstream of a river is stored in a high-altitude

reservoir

of a dam. The

water

from the intake of the

reservoir

, which is opened during the daytime, is made to flow through the blades of the

turbine

. The

turbine

, which is coupled to an electric generator, is rotated by the impact of

high

Add an article

the high

show examples

kinetic energy of the fluid. The power generated by the rotation of the armature of the generator is transmitted to the national grid. The

water

at the discharge of the

turbine

is stored in a low-altitude

reservoir

. At night,

he

Correct your spelling

the

show examples

surplus amount of electrical energy from the grid station is supplied to the generator, which in

this

case operates as a motor, and runs the reversible

turbine

, which at night, acts as a pump, to deliver the

water

from

lower

Correct article usage

the lower

show examples

to

higher

Add an article

the higher

show examples

reservoir

.

Hence

, the level of

water

in high-level storage is maintained and can be used to run the

turbine

the

next

day.