The following system is not generally used
A)1-phase 3 wire
B)1-phase 4 wire
C)3-phase 3 wire
D)3-phase 4 wire

Question

Quizplus · Accepted Answer

1-phase 3-wire systems are not generally used because standard single-phase electrical systems typically utilize either a 2-wire or a 4-wire configuration. The 2-wire configuration includes one live wire and one neutral wire, while the 4-wire configuration includes two live wires, one neutral wire, and one ground wire for safety. The 3-wire configuration is not standard for single-phase systems.

The Following System Is Not Generally Used