Electrical Installation Quiz

What is the meaning of nominal voltage?

A generator with 200 turns of wire rotating in a magnetic field of 0.5 T at a frequency of 50 Hz. What is the peak value of the induced voltage?

A generator produces an alternating current with a peak voltage of 240 V. If the frequency of the alternating current is 60 Hz, what is the effective (rms) voltage?

Importance of Polarity in Single pole Switching?

What is the typical voltage rating for final circuits in a residential installation?

What is the maximum current rating for a final circuit in a residential installation?

What is the purpose of a residual-current device (RCD) in a final circuit?

Which component is responsible for transmitting generated electricity from power plants to distribution substations?

• Transformers

• Transmission lines

• Circuit breakers

• Capacitors

As per standard code practice up-to what amount of voltage rating the ceiling rose is used?

• 220 V

• 230 V

• 240 V

• 250 V

Which of the following is a common installation fixing accessory used in electrical installations for securing cables or conduits?

• A) Cable gland

• B) Terminal block

• C) Junction box

• D) Circuit breaker