How many phase waveforms are present in single-phase versus three-phase systems?

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Multiple Choice

How many phase waveforms are present in single-phase versus three-phase systems?

Explanation:
Phase waveforms describe how many independent sine waves make up the power supply. In a single-phase system there is one AC waveform powering the circuit. In a three-phase system there are three separate AC waveforms, each 120 degrees apart, providing three phase waveforms in total. So the description “one in single-phase; three in three-phase” matches how these systems are defined. The other options would misstate the number of waveforms for one or three phases.

Phase waveforms describe how many independent sine waves make up the power supply. In a single-phase system there is one AC waveform powering the circuit. In a three-phase system there are three separate AC waveforms, each 120 degrees apart, providing three phase waveforms in total. So the description “one in single-phase; three in three-phase” matches how these systems are defined. The other options would misstate the number of waveforms for one or three phases.

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