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A transformer has negative voltage regulation when its load power factor is

Correct answer: A. Lagging

  • A. Lagging
  • B. Leading
  • C. Unity
  • D. any of above

Explanation

a) Lagging: In a transformer, the voltage regulation is said to be negative when the secondary voltage decreases with an increase in the load current. This situation occurs when the load power factor is lagging. Lagging power factor means that the load current lags behind the voltage, which leads to a decrease in the secondary voltage when the load current increases.

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About Electromagnetism

Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.

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