Quiz on Earthing in Electrical Systems

What is the potential of the earth in an earthing system?

• High

• Low

• Zero

• Variable

What is the primary function of a residual current device (RCD)?

• To store electrical energy

• To protect against electrical shock

• To increase voltage

• To decrease current

Which device is used to protect electrical equipment from damage caused by short circuits?

• Relay

• Circuit Breaker

• Transformer

• Inductor

What type of device is a circuit breaker?

• A device that generates electricity

• A device that stores electrical energy

• An electrical switch

• A device that increases voltage

What kind of damage does a circuit breaker protect an electrical circuit from?

• Overcurrent/overload or short circuit

• Low voltage

• High resistance

• Low current

A circuit breaker is designed to protect an electrical circuit from damage caused by which of the following?

• Low voltage

• Overcurrent/overload or short circuit

• High resistance

• Low current

What happens to the current flow when a circuit breaker is activated?

• It increases

• It decreases

• It is interrupted

• It remains the same

What is the operating time of a fuse?

• 0.002 seconds

• 0.02 seconds

• 0.05 seconds

• 0.1 seconds

Which device provides protection against power overloads?

• Fuse

• Circuit Breaker

• Both

• Neither

Which device has a low breaking capacity compared to the other?

• Fuse

• Circuit Breaker

• Both

• Neither