Interrelatedness of Electricity and Magnetism

1. ELECTRICITY AND
MAGNETISM
“ How electricity is generated,
transmitted and distributed?”

2. Electricity powers all
our gadgets and
appliances at home.

3. Hydropower plant
vs.
Coal-fired plant

4. Hydropower plant
 runs by passing the falling
water directly through the
turbines which are connected
to a generator to produce
electricity.

5. Coal-fired plant
 uses the coal as fuel
to heat and boil water
to produce steam.

6. Coal-fired plant
 The steam is directed to
the turbines which are
connected to a generator to
produce electricity.

7. Parts of a
Hydropower
plant

8. 1. Reservoir
“stored water”
 used as a
recreational lake.

9. 2. Dam
holds back the
water creating a
large reservoir.

10. 3. Generator
A series of giant
magnets that produces
alternating current
(AC).

11. 4. Transformer
 a “device”.
located inside the
powerhouse that takes the
AC and converts it to a
higher-voltage current.

12. 5. Powerhouse
 located inside the
powerhouse that takes the
AC and converts it to a
higher-voltage current.

13. 6. Power lines
Out of every power plant
come four wires: the three
phases of power being
produced simultaneously plus
a neutral or ground common
to all three.

14. 7. Intake
Gates on the dam open
and gravity pulls the water
through the penstock.
 Water builds up pressure as
it flows through this pipe.

15. 8. Control gate
 A barrier that regulates
water released from a
reservoir to the power
generation unit.

16. 9. Penstock
A connecting pipe
between the dam
and the turbine
house.

17. 10. Turbine
A connecting pipe
between the dam
and the turbine
house.

18. 11. Outflow
Used water is carried
through pipelines,
called tailraces, and re-
enters the river
downstream.