bab 6 sn

Question 1

Renewable energy sources

Answer 1

can be replaced continually and will never deplete
Examples:
- hydro energy
- wind energy
- wave energy

Question 2

Non-renewable energy sources

Answer 2

cannot be replaced and will deplete
Examples:
- nuclear energy
- natural gas
- coal
- petroleum

Question 3

Power stations in Malaysia

Answer 3

Bakun hydroelectric power station (Sarawak) : Hydro energy
Tuanku Jaafar power station (N. Sembilan) : Natural gas
Sultan Azlan Shah power station (Perak) : Coal
Gelugor power station (Pulau Pinang) : Diesel
TSH Bio-Energy Sdn. Bhd. (Sabah) : Biomass
Hybrid power station (Pulau Perhentian Kecil) : Wind, Solar, Diesel

Question 4

Using non-renewable energy sources (diesel, natural gas, coal)

Answer 4

Energy Change
Chemical energy - Heat energy - Kinetic energy - Electrical energy

Question 5

Hydroelectric power station

Answer 5

Gravitational potential energy - Kinetic energy - Electrical energy

Question 6

Using wind energy

Answer 6

Kinetic energy - Electrical energy

Question 7

Using nuclear fuel

Answer 7

Nuclear energy - Heat energy - Kinetic energy - Electrical energy

Question 8

Using biomass

Answer 8

Chemical energy - Heat energy - Kinetic energy - Electrical energy

Question 9

Step-up transformer

Answer 9

• Primary voltage is lower than secondary voltage.
• Turns of primary coil is less than secondary coil.

Question 10

Step-down transformer

Answer 10

• Primary voltage is higher than secondary voltage.
• Turns of the primary coil is more than secondary coil.

Question 11

Transformer Equation

Answer 11

Vp / Vs = Np / Ns