Do the same exercise as above with the replacement of the earlier transformer by a 40,000-220 V step-down transformer (Neglect, as before, leakage losses though this may not be a good assumption any longer because of the very high voltage transmission involved). Hence, explain why high voltage transmission is preferred?

Explanation

To solve the problem of analyzing the performance of a 40,000-220 V step-down transformer and explaining why high voltage transmission is preferred, we can follow these steps:

### Step 1: Determine the Load Power
Assume the load power (P_load) is given as 800 kW.

### Step 2: Calculate the Current on the Secondary Side
Using the formula for power (P = V × I), we can find the secondary current (I_secondary) using the secondary voltage (V_secondary = 220 V):

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