Q.

Which of the following distribution system is preferred for good efficiency and high economy?

  • ASingle-phase, 2-wire system 
  • B2-phase, 3-wire system 
  • C3-phase, 3-wire system
  • D3-phase, 4-wire system
Correct Answer : (D)

3-phase, 4-wire system

Hints :

3-phase, 4-wire system distribution system is preferred for good efficiency and high economy.

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