railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Measurement of Energy
A single-phase energy meter is operating on 200 V, 50 Hz supply with a load of 10 A for two hours at 0.8 p.f. The meter takes 1800 revolutions in that period. The meter constant is:
1
1800 rev/kWh
2
856.5 rev/kWh
3
1000 rev/kWh
4
562.5 rev/kWh