Question

Example 1: A single-phase energy meter has a constant of 6000 rev/kWh. A test was carried
out with a resistive load for one minute, during which the meter made 21 revolutions. The voltage
was 110 volts and current 2 A. Calculate the % error.
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Answer 1

Answer:

The number of revolutions made by the energy meter per kilowatt-hour is known as the meter constant of an energy meter.

Unit of meter constant is revolution per kilowatt-hour (rev/kWh)

It is constant for a particular energy meter

Answer 2

Explanation:

-4.46% ................................... ANS