Home Physics Alternating Current Alternating Current, Voltage and Power A small town with a demand of 800 kW of elec…
Physics Alternating Current Alternating Current, Voltage and Power MCQ (Single Correct)

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 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 from of heat is:

A
400 kW
B
600 kW
C
300 kW
D
800 kW

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Text Solution

Verified by Experts
The correct answer is:
B

Here,
Total resistance of two wire line

As supply is through transformer

Line power loss

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