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When port 1 of a two port cirucit is short circuited, I1 = 4I2 and V2 = 0.25I2, which of the following is true?

When port 1 of a two port cirucit is short circuited, I1 = 4I2 and V2 = 0.25I2, which of the following is true? Correct Answer Y<sub style="">12</sub> = 16

Concept:

I1 = Y11 V1 + Y12 V2

I2 = Y21 V1 + Y22 V2

When port 1 is short cirucited, i.e. V1 = 0,

I1 = Y12 V2 and I2 = Y22 V2

Calculation:

The given equations are:

I1 = 4I2 and V2 = 0.25 I2

⇒ I2 = 4V2 ⇒ Y22 = 4

I1 = 4 (4V2) = 16 V2

⇒ Y12 = 16

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