In a single-phase circuit measured by a dynamometer-type wattmeter, the applied voltage and current magnitudes remain constant, but the load becomes more inductive, causing the power factor to reduce from unity to 0.5 lagging. Under this condition, the wattmeter reading will:

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Electrical Engineering · Measurements and Instrumentation

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Decrease proportionally to the power factor.

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Answer 1

Increase due to the inductive nature of the load.

Answer 2

First increase and then decrease.

Answer 3

Decrease proportionally to the power factor.

Answer 4

Remain the same because voltage and current remain unchanged.

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