# When the load PF is lagging the voltage regulation is?

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Explanation: At leading power factor the voltage regulation can be negative or zero.

## How is power factor related to voltage regulation?

The voltage regulation of the transformer is the percentage change in the output voltage from no-load to full-load. And since power factor is a determining factor in the secondary voltage, power factor influences voltage regulation. This means the voltage regulation of a transformer is a dynamic, load-dependent number.

## When the load PF is lagging then voltage regulation is positive negative zero may be positive or negative?

Voltage Regulation of Transformer at Lagging Power Factor

For any current that lags the secondary voltage by 0 to 90o, the voltage regulation will be positive.

## How does load power factor affect the voltage regulation and transmission line efficiency?

Effect of Load Power Factor on Efficiency

three phase. Or I = P ÷ 3VRcos φR. Thus, for a constant amount of power and voltage at the receiving end, the line current is proportional to the load power factor. … Thus, the efficiency of the transmission line decreases with the decrease in load power factor.

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## When the load power factor is leading voltage regulation of line is Mcq?

Explanation: Since voltage regulation of a transformer in the leading loading condition is not additive in nature, at particular power factor in leading we can get zero voltage regulation.

## How is regulation related to the load current?

Load regulation is the capability to maintain a constant voltage (or current) level on the output channel of a power supply despite changes in the supply’s load (such as a change in resistance value connected across the supply output).