250+ TOP MCQs on Inter Connection of Two-Port Networks and Answers

Network Theory Multiple Choice Questions on “Inter Connection of Two-Port Networks”.

A. 1
B. 2
C. 3
D. 4

Answer: C
Clarification: The Z –parameter Z₁₁ is V₁/I₁, port 2 is open circuited. V₁ = (1+2)I₁ => V₁/I₁ = 3 and on substituting, we get Z₁₁ = 3Ω.

2. In the circuit shown below, find the Z-parameter Z₁₂.
A. 4
B. 3
C. 2
D. 1

Answer: C
Clarification: The Z-parameter Z₁₂ is V₂/I₁ |I₂=0. On open circuiting port 2 we obtain the equation, V₁ = (2) I₂ => V₁/I₁ = 2. On substituting we get Z₁₂ = 2Ω.

3. In the circuit shown below, find the Z-parameter Z₂₁.

A. 2
B. 4
C. 1
D. 3

Answer: A
Clarification: The Z-parameter Z₂₁ is V₂/I₁ |I₂=0. On open circuiting port 2, we get V₂ = (2)I₁ => V₂/I₁ = 2. On substituting we get Z₂₁ = 2Ω.

4. In the circuit shown below, find the Z-parameter Z₂₂.

A. 3
B. 2
C. 4
D. 1

Answer: A
Clarification: The Z-parameter Z₂₁ is V₂/I₂ |I₁=0. This parameter is obtained by open circuiting port 1. So we get V₂ = (2 + 1)I₂ => V₂ = 3(I₂) => V₂/I₂ = 3. On substituting Z₂₁ = 3Ω.

5. In the circuit shown below, find the Z-parameter Z₁₁.
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A. 10
B. 15
C. 20
D. 25

Answer: B
Clarification: The Z –parameter Z₁₁ is V₁/I₁, port 2 is open circuited. V₁ = (10 + 5)I₁ => V₁/I₁ = 15 and on substituting, we get Z₁₁ = 2.5Ω.

6. In the circuit shown below, find the Z-parameter Z₁₂.
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A. 15
B. 10
C. 5
D. 1

Answer: C
Clarification: The Z-parameter Z₁₂ is V₂/I₁ |I₂=0. On open circuiting port 2 we obtain the equation, V₁ = (5) I₂ => V₁/I₁ = 5. On substituting we get Z₁₂ = 5Ω.

7. From the circuits shown below, find the combined Z-parameter Z₁₁.
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A. 8
B. 18
C. 28
D. 38

Answer: B
Clarification: The Z-parameter Z₁₁ is Z₁₁ = Z_11x + Z_11y and Z_11x = 3, Z_11y = 15. On substituting we get Z₁₁ = 3 +15 = 18Ω.

8. From the circuits shown below, find the combined Z-parameter Z₁₂.

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A. 4
B. 5
C. 6
D. 7

Answer: D
Clarification: The Z-parameter Z₁₂ is Z₁₂ = Z_12x + Z_12y and we have Z_12x = 2, Z_12y. On substituting we get Z₁₂ = 2 + 5 = 7Ω.

9. From the circuits shown below, find the combined Z-parameter Z₂₁.
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A. 7
B. 6
C. 5
D. 4

Answer: A
Clarification: The Z-parameter Z₂₁ is Z₂₁ = Z_21x + Z_21y and we have Z_21x = 2, Z_21y = 5. On substituting we get Z₂₁ = 2 + 5 = 7Ω.

10. From the circuits shown below, find the combined Z-parameter Z₂₂.
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A. 38
B. 28
C. 18
D. 8

Answer: B
Clarification: The Z-parameter Z₂₂ is Z₂₂ = Z_22x + Z_22y and we have Z_22x = 3, Z_22y = 25. On substituting we get Z₂₂ = 3 +25 = 28Ω.