Consider the following statements: 1. When a number of two-port
Consider the following statements:
1. When a number of two-port networks are connected in series then z-parameters are added up
2. When a number of two-port networks are connected in parallel then h-parameters are added up
3. When a number of two-port networks are cascaded then T-parameters are multiplied
Which of the above statement(s) is/are true?A. Only 1
B. Only 3
C. 1 and 3
D. 1, 2 and 3
Please scroll down to see the correct answer and solution guide.
Right Answer is: C
SOLUTION
- When a number of two-port networks are connected in series, then the z-parameters gets added up
- When a number of two-port networks are connected in parallel, then the y-parameters gets added up
- When a number of two-port networks are connected in cascade, then the ABCD-parameters gets multiplied
- When a number of two-port networks are connected in series parallel, then the h-parameters gets added up
Important points:
|
Two-port network parameters |
Equations |
|
Z parameters |
V1 = Z11I1 + Z12I2 V2 = Z21I1 + Z22I2 |
|
Y parameters |
I1 = Y11V1 + Y12V2 I2 = Y21V1 + Y22V2 |
|
h parameters |
V1 = h11I1 + h12V2 I2 = h21I1 + h22V2 |
|
g parameters |
I1 = g11V1 + g12I2 V2 = g21V1 + g22I2 |
|
T parameters (ABCD) |
V1 = AV2 – BI2 I1 = CV2 – DI2 |
|
Inverse T parameters |
V2 = A’V1 – B’I1 I2 = C’V1 – D’I1 |