A power transmission line 50. km long has a total resistance of 0.60 Ω. A generator produces 100. V at 70. A. In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:
1.
(a) What percentage of the original energy is lost when the transformer is used?
(b) What percentage of the original energy would be lost if the transformer were not used?
Correct Answer:
Verified
Q51: An ideal transformer steps down 120. volts
Q52: FIGURE 23-5 Q54: The starting current in a DC motor Q54: An ideal transformer has 60 turns on Q55: An AC generator rotating at 60. Hertz Q57: A circular coil of diameter 20. cm, Q58: A step-down transformer is needed to reduce Q59: A 90.% efficient transformer supplies 3.0 Amperes Q60: An eagle, with a wingspread of 2.0 Q61: FIGURE 23-6 ![]()
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