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Phase angles in an energy meter cannot be incorrect.

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in Electrical Measurements by (148k points)
Phase angles in an energy meter cannot be incorrect.

(a) True

(b) False

This question was addressed to me during an internship interview.

This key question is from Errors in Single Phase Energy Meters in division Measurement of Power and Related Parameters of Electrical Measurements

1 Answer

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Correct answer is (b) False

The explanation: In an energy meter, phase angle errors occur as a result of improper adjustments of lag condition, abnormal frequencies etc. Due to temperature, changes in resistance values also lead to error in the phase angle.

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