Question

A 50 MW electric power station sends power to a load through cables. Power is sent at

(i) 50000 V and (ii) 500 V. Calculate the power loss in each case​

Answer 1

Answer:

Explanation:

A 50 MW electric power station sends power to a load through cables. Power is sent at  

(i) 50000 V and (ii) 500 V. Calculate the power loss in each case​

Power = 50MW

Voltage = 50000V

Current = 50 * 10⁶ / 50 * 10³ = 1000 A

Power Loss = 1000²R = 10⁶R  (R - Resistance of Cables)

Power = 50MW

Voltage = 500V

Current = 50 * 10⁶ / 500 = 10⁵A

Power Loss = (10⁵)²R = 10¹⁰R  (R - Resistance of Cables