A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 240000 V by a transformer before it is sent on a high voltage transmission line. The current in transmission line isA. 3.67 AB. 2.67 AC. 1.67 AD. 2.40 A

A generator at a utility company produces 100 A of current at 4000 V.

1.	A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 240000 V by a transformer before it is sent on a high voltage transmission line. The current in transmission line isA. 3.67 AB. 2.67 AC. 1.67 AD. 2.40 A
Answer» Correct Answer - C For step-up transforer, `V_(s) gtV_(P)` and `I_(S) lt I_(P)` For an ideal transformer, `V_(S)I_(S) = V_(P)I_(P)` `therefore 240000I_(S) = 100 xx 4000` or `I_(S) = 1.67 A`

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A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 240000 V by a transformer before it is sent on a high voltage transmission line. The current in transmission line isA. 3.67 AB. 2.67 AC. 1.67 AD. 2.40 A

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