per km. The town
gets power from the line through a 4000-220 V step-down transformer at a
sub-station in the town,
(a)
Estimate the line power loss in the form of heat.
(b)
How much power must the plant supply, assuming there is negligible power I, due
to leakage?
(c)
Characterise the step up transformer the plant.
Answer:
Total resistance of
line 
on line 
(a)
Line power loss 
(b)
Power supplied 800 + 600
(c)
Voltage dropped 
(d)
The plant transformer should supply 
. So the up
transformer should be of 440 V/7000 V.
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