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A transformer has positive voltage regulation when its load power factor is:
  • a)
    zero
  • b)
    leading
  • c)
    lagging
  • d)
    unity
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A transformer has positive voltage regulation when its load power fact...
Voltage regulation for the transformer is given by the ratio of change in secondary terminal voltage from no load to full load to no load secondary voltage.
Voltage regulation =E2−V2 / E2
It can also be expressed as,
Regulation =I2R02cosϕ2±I2X02sinϕ2 / E2
+ sign is used for lagging loads
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A transformer has positive voltage regulation when its load power factor is:a)zerob)leadingc)laggingd)unityCorrect answer is option 'C'. Can you explain this answer?
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