A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The output power is delivered at 230 V by the transformer. If the current in the primary of the transformer is 5 A and its efficiency is 90 % , the output current would be:

Question

A power transmission line feeds input power at 2300 V to a step down transformer with its primary windings having 4000 turns. The output power is delivered at 230 V by the transformer. If the current in the primary of the transformer is 5 A and its efficiency is 90 % , the output current would be:, 35 A, 25 A, 50 A, 45 A

MARKS App · Accepted Answer

Efficiency n = 90 % ⇒ 0.9 × p o w e r i n = P o w e r o u t 0.9 × 2300 × 5 = 230 × I o u t I o u t = 45 A

Search any question & find its solution

Looking for more such questions to practice?