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Mains Electricity Quiz

5 Questions

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Mains Electricity Quiz

Created by

@CozyJadeite

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Questions and Answers

What is the most common voltage and frequency combination used in North America?

110 V and a frequency of 60 Hz

230 V and a frequency of 50 Hz

240 V and a frequency of 50 Hz

120 V and a frequency of 60 Hz (correct)

What is the nominal voltage used in much of the world for mains electricity?

220 volts

250 volts

230 volts (correct)

240 volts

What is the purpose of non-interchangeable plugs and sockets in different regions?

To provide protection from accidental use of appliances with incompatible voltage and frequency (correct)

To standardize electrical connections globally

To limit the use of electrical appliances

To increase the cost of electrical appliances

What is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world?

<p>Alternating-current (AC) electric power supply</p> Signup and view all the answers

What may happen to travellers' portable appliances when used with foreign electrical supplies?

<p>They may be inoperative or damaged</p> Signup and view all the answers

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