Electrical and Lighting System Quiz

What is electricity?

What are the two main types of electricity?

• Static Electricity: Accumulated charge without continuous flow.

• Current Electricity: Continuous flow of electric charge, used in power systems.

Define voltage and current.

What is the difference between AC and DC power?

• Alternating Current (AC): The direction of electron flow changes periodically.

• Direct Current (DC): The electron flow remains in one direction.

What are some common applications of DC power?

• Electric vehicles (EV batteries).

• Telecommunications (energy-efficient power supplies).

• Renewable energy systems (solar panels, fuel cells).

• Consumer electronics (laptops, smartphones, LED TVs).

What are the advantages of AC power in transmission?

• Easily converted to different voltages using transformers.

• Lower power losses over long distances.

• More suitable for household and industrial power distribution.

What are the common sources of power generation?

• Fossil fuels (coal, oil, natural gas).

• Nuclear energy (nuclear fission).

• Renewable energy (solar, wind, hydro, geothermal).

What is a substation and its function?

Why is AC power preferred for power distribution?

What is a switchboard, and why is it important?