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Disc rotates slowly in some energy meters.(a) True(b) FalseI got this question during an interview.This question is from Errors in Single Phase Energy Meters topic in division Measurement of Power and Related Parameters of Electrical Measurements

Answer»

Right option is (a) True

Easiest explanation: Even when there is no current FLOW through the ENERGY meter, disc rotates SLOWLY. This is known as creeping. This is occurs as a result of the over compensation PROVIDED for friction.



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