A transformer on a pole near a factorysteps the voltage down from 3600 V (rms) t

Question

A transformer on a pole near a factorysteps the voltage down from 3600 V (rms) to 120 V (rms). Thetransformer is to deliver 1100 kW tothe factory at 90% efficiency. Find values for the following. (a) the power delivered to the primary
1kW
A transformer on a pole near a factorysteps the voltage down from 3600 V (rms) to 120 V (rms). Thetransformer is to deliver 1100 kW tothe factory at 90% efficiency. Find values for the following. (a) the power delivered to the primary
1kW
(a) the power delivered to the primary
1kW

Explanation / Answer

. 1.   Power delivered at the secondary = 1100E+3Watts 2.   Power delivered at the primary = (Power atsecondary)/(efficiency) = (1100E+3 Watts)/(0.90) = 1222.2E+3Watts 3.   Power delivered at the primary =1222.2 kW .

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