A Single-phase Energy meter is operating on 230V, 50 Hz supply with a load of 20A for two hours at UPF. The meter makes 1380 revolutions in that period. The meter constant is
- A. 695 rev/kWh
- B. 150 rev/kWh
- C. 0.15 rev/kWh
- D. 1/150 rev/kWh
Answer: B. 150 rev/kWh
Explanation: Energy = 230×20×2 = 9.2 kWh; meter constant = 1380/9.2 = 150 rev/kWh.