# Network Theory Questions and Answers – Inner Relationships of Different Parameters

This set of Network Theory Problems focuses on “Inner Relationships of Different Parameters”.

1. For the given information Z11 = 3, Z12 = 1, Z21 = 2, Z22 = 1. Find the value of Y11.
a) 1
b) -1
c) 2
d) -2
View Answer

Answer: a
Explanation: Y11 = Z22/∆z and ∆z=3-2=1 and Z22 = 1. So on substituting we get Y11 = 1/1 = 1.

2. For the given information Z11 = 3, Z12 = 1, Z21 = 2, Z22 = 1. Find the value of Y12.
a) -2
b) 2
c) -1
d) 1
View Answer

Answer: c
Explanation: Y12 = -Z12/∆z and ∆z=3-2=1 and Z12 = 1. So on substituting we get Y12=-1/1=-1.

3. For the given information Z11 = 3, Z12 = 1, Z21 = 2, Z22 = 1. Find the value of Y21.
a) 2
b) -2
c) 1
d) -1
View Answer

Answer: b
Explanation: We have the relation Y21=-Z21/∆z. ∆z=3-2=1 and given Z21 = 2. On substituting we get Y21=-2/1=-2.
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4. For the given information Z11 = 3, Z12 = 1, Z21 = 2, Z22 = 1. Find the value of Y22.
a) 1
b) 2
c) 3
d) 4
View Answer

Answer: c
Explanation: The relation between Y22 and Z11 is Y22= Z11/∆z and ∆z=3-2=1 and given Z11 = 3. On substituting we get Y22 = 3/1 = 3.

5. For the given information Z11 = 3, Z12 = 1, Z21 = 2, Z22 = 1. What is the value ∆y?
a) 0
b) 1
c) 2
d) 3
View Answer

Answer: b
Explanation: ∆y is the determinant of y parameters. The value ∆y is (Y11)(Y22)-(Y12)(Y21). On substituting the values we get ∆y = (1)(3)-(-2)(-1)=1.

6. For the given information Z11 = 3, Z12 = 1, Z21 = 2, Z22 = 1. What is the product of ∆y and ∆z is?
a) 3
b) 2
c) 1
d) 0
View Answer

Answer: c
Explanation: ∆y is the determinant of y parameters and ∆z is the determinant of z parameters. And we obtained ∆y = 1 and ∆z = 1. So their product = (1) (1) = 1.

7. The relation between Z11 and Y parameters is?
a) Z11 = Y22/∆y
b) Z11 = -Y22/∆y
c) Z11 = Y12/∆y
d) Z11 = (-Y12)/∆y
View Answer

Answer: a
Explanation: V1=(Y22/∆y)I1-(Y12/∆y)I2. The relation between Z11 and Y parameters is Z11 = Y22/∆y.
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8. The relation between Z12 and Y parameters is?
a) Z12 = Y12/∆y
b) Z12 = (-Y12)/∆y
c) Z12 = (-Y22)/∆y
d) Z12 = Y22/∆y
View Answer

Answer: b
Explanation: V1=(Y22/∆y)I1-(Y12/∆y)I2. The relation between Z12 and Y parameters is Z12 = (-Y12)/∆y.

9. The relation between Z21 and Y parameters is?
a) Z21 = Y21/∆y
b) Z21 = Y12/∆y
c) Z21 = (-Y21)/∆y
d) Z21 = (-Y12)/∆y
View Answer

Answer: c
Explanation: V2=(-Y21/∆y)I1+(Y11/∆y)I2. The relation between Z21 and Y parameters is Z21 = (-Y21)/∆y.
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10. The relation between Z22 and Y parameters is?
a) Z22 = (-Y11)/∆y
b) Z22 = Y21/∆y
c) Z22 = (-Y21)/∆y
d) Z22 = Y11/∆y
View Answer

Answer: d
Explanation: V2=(-Y21/∆y)I1+(Y11/∆y)I2. The relation between Z22 and Y parameters is Z22 = Y11/∆y.

Sanfoundry Global Education & Learning Series – Network Theory.

To practice all areas of Network Theory Problems, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]

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