Three phase supply also provides:
Correct answer: C. 400V
- A. 230 V
- B. 460 V
- C. 400V
- D. None of these
Explanation
For many years, mainland Western Europe has used a mains, 3 phase, electricity supply nominally rated at 380v AC 50Hz while the UK used 415v AC 50Hz. Currently, all Western European 3 phase supplies are classified 400v AC.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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592 free Alternating Current MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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