A utility must supply 5 MW of power to a town 80 km away
PHYSICS · Multi-part · CBSE · Physics · Alternating Current · Alternating Current
Problem
A utility must supply 5 MW of power to a town 80 km away. The transmission line uses two conductors, each having a resistance of 0.5 Ω per km.
(a) Determine the power lost as heat in the line when the power is sent at 33 kV.
(b) Determine the power lost when the transmission voltage is raised to 132 kV.
(c) By what factor does raising the voltage reduce the line loss?