Exam Questions Paper - ECE Questions and Answers

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The equation for loop currents I₁ and I₂ are __________

Answer : Option C

Explanation :

k = 0.8

∴ M = kL₁L₂ = 0.83 x 2 = 1.95 H

Apply KVL to loop 1

200∠0° = (j5 + 5 + j2 - j3)I₁ + 1.95I₂

∴ 200∠0° = (5 + j4)I₁ + j1.95I₂

Apply KVL to loop 2

0 = (5 + 3 + j3)I₂ + j1.95I₁

0 = (8 + j3)I₂ + j1.95I₁

0 = j1.95I₁ + (8 + j3)I₂

∴ The loop equations in matrix form are

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