In a transformer, the input voltage and input current are 11 kV and 10 A, respectively. If the output voltage is 450V and the output current is 220 A, then efficiency of the transformer is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Given:
Input voltage 
Input current 
Output voltage 
Output current 
Step 1: Find input power
Step 2: Find output power
Step 3: Efficiency
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