Free BOC Electrical Systems and Lighting Questions and Answers

Question 1

What is the function of a circuit breaker in an electrical system?

Accepted Answer

Protect against overcurrent

Answer

A circuit breaker protects an electrical circuit from damage caused by overcurrent or short circuit by interrupting the flow of electricity.

Question 2

Which type of lighting is most energy-efficient for commercial buildings?

Accepted Answer

LED

Answer

LED lighting uses significantly less energy than traditional lighting sources and has a longer lifespan, making it ideal for commercial use.

Question 3

What device measures the amount of electrical energy consumed?

Accepted Answer

Electric meter

Answer

An electric meter tracks the amount of electrical energy used over time, typically in kilowatt-hours (kWh).

Question 4

What is the purpose of using motion sensors in lighting systems?

Accepted Answer

Reduce energy by turning off unused lights

Answer

Motion sensors help save energy by automatically turning lights on when movement is detected and off when the space is unoccupied.

Question 5

Which term refers to the rate at which electrical energy is used?

Accepted Answer

Power

Answer

Power is the rate at which energy is consumed, measured in watts or kilowatts.

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