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Questions and Answers
What is the most common voltage and frequency combination used in North America?
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?
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?
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?
What is the form of electrical power that is delivered to homes and businesses through the electrical grid in many parts of the world?
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What may happen to travellers' portable appliances when used with foreign electrical supplies?
What may happen to travellers' portable appliances when used with foreign electrical supplies?
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