railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Energy Induction Type Energy Meter
The meter constant of a 220 V, 5 A energy meter is 2000 revolutions per kWh. The meter is tested at half load at rated voltage and unity power factor. The meter is found to make 36 revolutions in 120 s. Determine the meter error at half load.
1
-1.82%
2
3.45%
3
2.52%
4
-4.54%