Question Detail

PHY 102 Test Compilation PHY 102 6 Objective Question
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Question

Transformer which is 80% efficient gives output of 12 V and 4 A. Input power?
Options
A 13 W
B 38 W
C 60 W
Correct Answer
D 154 W
Correct Answer

Option C is the correct answer.

Detailed Explanation

Output power = 12×4 = 48 W. Efficiency = P_out/P_in → 0.8 = 48/P_in → P_in = 60 W.

Hint

P_in = P_out / η.

Question Info

Course: PHY 102
Topic: Test Compilation PHY 102 6
Type: Objective
Difficulty: Not specified
Question 473 of 1819
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