1. UNIT 1: INTRODUCTION
1.1 Importance Of And Need For Electricity In Daily Life
1.2 Other Forms Of Energy Converted From Electricity
1.3 Energy Resources
1.4 Generation, Transmission and Distribution of Electricity
1.4.1 Electricity Generation
1.4.2 Types of Power Station

2. 1.1 IMPORTANCE OF AND NEED FOR
ELECTRICITY
Importance
of
electricity
To
functions
Industry
appliances
Domestic
appliances

3. EXAMPLES OF ELECTRICITY APPLIANCES

4. 1.2 OTHER FORMS OF ENERGY
CONVERTED FROM ELECTRICITY
Heat Energy Light Energy
Sound
Energy
Mechanical
Energy
Electricity

5. 1.3 ELECTRICAL ENERGY RESOURCES
Friction
Chemical
Reaction
Light
Heat
Magnet
Pressure

6. HOW ELECTRICITY FLOWS TO ITS USER?

7. 1.4 GENERATION, TRANSMISSION &
DISTRIBUTION OF ELECTRICITY
Electricity
Generation
Direct Current
Current flow in one
direction
Alternating
Current
Constantly changing
its flow direction

8. 1.4 GENERATION, TRANSMISSION &
DISTRIBUTION OF ELECTRICITY
 Examples of DC and AC generation

9. 1.4 GENERATION, TRANSMISSION &
DISTRIBUTION OF ELECTRICITY
Hydro power
station
Prime mover:
water
Thermal Power
Station
Prime Mover:
Steam
Gas Power
Station
Prime Mover:
Air (Gas)

10. HYDRO-ELECTRIC POWER STATION
Operation:
• water flow
from a dam
•Turn the
turbine
•Rotate the
generator to
generate
voltage

11. THERMAL POWER STATION

12. GAS POWER STATION
Operation:
•Compressor - compresses a gas to produce high-pressure air (cooling
part)
•Combustion – burn the gas used (fuel)
•Rotate the generator to generate voltage

13. HEAT ENERGY
Current
Heating
Element
Heat
Energy

14. LIGHT ENERGY
current
Light/lamp
Light
Energy

15. MECHANICAL ENERGY
current
Motor Coil
Rotor Spin
Mechanical
Energy

16. SOUND ENERGY
current
Audio
Circuit
Sound
Energy

17. FRICTION
Friction
2 different
material
Electrostatic
force
/Silk cloth

18. CHEMICAL REACTION
Zinc + Copper +
electrolyte
Electric Charge /
Electrochemical
Reaction

19. LIGHT
Light
Surface
Photoelectric
Effect

20. HEAT
Heat
Two different
material
Seebeck
Effect

21. MAGNETIC FIELD
Cutting
Magnetic
field
Induced
current
EMF

22. PRESSURE
Pressure Crystal
Piezoelectric
Effect