Physics · Power Transmission

Which of the following is correct when comparing a single-phase power supply system to a three-phase power supply system?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1Single-phase systems offer a better power factor and higher efficiency.
2Single-phase systems require less conductor material for transmitting the same amount of power.
3Single-phase systems have lower transmission reliability.✓
4Single-phase machinery has a lower cost per unit power.

Correct answer

Single-phase systems have lower transmission reliability.

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