A small town with a demand of 800 kW of electric power at 220 V is situated 15 km away…
Physics · Class 12 · CBSE — Alternating Current
A small town with a demand of 800 kW of electric power at 220 V is situated 15 km away from an electric plant generating power at 440 V. The resistance of the two wire line carrying power is 0.5 Ω per km. The town gets power from the line through a 4000 - 220 V step down transformer at a substation in the town. The line power loss in the form of heat is
- 400 kW
- 600 kW
- 300 kW
- 800 W
Answer
(B) 600 kW
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