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Network Analysis
Two Port Network

Practice questions from Two Port Network.

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Q#1 Two Port Network GATE EC 2025 (Set 1) MCQ +2 marks -0.66 marks

The -parameter matrix of a two port network relates the port voltages and port currents as follows:

 

The -parameter matrix (with each entry in Ohms) of the network shown below is

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Q#2 Two Port Network GATE EC 2024 (Set 1) NAT +2 marks -0 marks

For the two port network shown below, the value of the  parameter (in Siemens) is__________.

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Q#3 Two Port Network GATE EC 2023 (Set 1) NAT +1 mark -0 marks

For the two port network shown below, the [Y]-parameters is given as

 

The value of load impedance , in , for maximum power transfer will be _________.

(rounded off to the nearest integer).

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Q#4 Two Port Network GATE EC 2023 (Set 1) MCQ +2 marks -0.66 marks

The h-parameters of a two port network are shown below. The condition for the maximum small signal voltage gain  is

 very high and

 very high,  very high and

 very high,  very high and

 very high and  very high

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Q#5 Two Port Network GATE EC 2022 (Set 1) NAT +2 marks -0 marks

linear 2-port network is shown in Fig. (a). An ideal DC voltage source of  is connected across Port 1. A variable resistance  is connected across Port 2. As  is varied, the measured voltage and current at Port 2 is shown in Fig. (b) as a  versus  plot. Note that for , , and for .

When the variable resistance  at  ort 2 is replaced by the load shown in Fig. (c), the current  is _________  (rounded off to one decimal place).         

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Q#6 Two Port Network GATE EC 2021 (Set 1) MCQ +2 marks -0.66 marks

Consider the two-port network shown in the figure.         

The admittances parameters, in Siemens, are

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Q#7 Two Port Network GATE EC 2020 (Set 1) NAT +1 mark -0 marks

In the given circuit, the two-port network has the impedance matrix . The value of  for which maximum power is transferred to the load is __________ .

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Q#8 Two Port Network GATE EC 2020 (Set 1) NAT +2 marks -0 marks

For a 2-port network consisting of an ideal lossless transformer, the parameter  (rounded off to two decimal places) for a reference impedance of , is _______.

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Q#9 Two Port Network GATE EC 2018 (Set 1) NAT +1 mark -0 marks

The ABCD matrix for a two-port network is defined by:

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The parameter B for the given two-port network (in ohms. correct to two decimal places) is _______.

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Q#10 Two Port Network GATE EC 2016 (Set 1) MCQ +1 mark -0.33 marks

Consider a two-port network with the transmission matrix: If the network is reciprocal, then

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Q#11 Two Port Network GATE EC 2016 (Set 2) NAT +1 mark -0 marks

The z-parameter matrix for the two-port network shown is  , where the entries are in. Suppose.        

Then the value of  (in ) equals ________.

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Q#12 Two Port Network GATE EC 2016 (Set 1) MCQ +2 marks -0.66 marks

The z-parameter matrix  for the two-port network shown is  

22.jpg

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Q#13 Two Port Network GATE EC 2015 (Set 2) MCQ +1 mark -0.33 marks

In The 2-port admittance matrix of the circuit shown is given by         

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Q#14 Two Port Network GATE EC 2014 (Set 1) MCQ +1 mark -0.33 marks

A two-port network has scattering parameters given by. If port-2 of the two-port is short circuited, the  parameter for the resultant one-port network is

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Q#15 Two Port Network GATE EC 2014 (Set 2) NAT +2 marks -0 marks

In the h-parameter model of the 2-port network given in the figure shown, the value of   (in S) is ______.

Q31-1.jpg

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Q#16 Two Port Network GATE EC 2014 (Set 4) MCQ +2 marks -0.66 marks

For the two-port network shown in the figure, the impedance (Z) matrix (in Ω) is

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Q#17 Two Port Network GATE EC 2014 (Set 3) MCQ +2 marks -0.66 marks

The ABCD parameters of the following 2-port network are

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Q#18 Two Port Network GATE EC 2012 (Set 1) MCQ +2 marks -0.66 marks

With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed

(i) 1Ω connected at port B draws a current of 3 A

(ii) 2.5 Ω connected at port B draws a current of 2 A

Q48

With 10 V dc connected at port A, the current drawn by 7 Ω connected at port B is

3/7 A

5/7 A

1 A

9/7 A

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Q#19 Two Port Network GATE EC 2012 (Set 1) MCQ +2 marks -0.66 marks

With 10 V dc connected at port A in the linear nonreciprocal two-port network shown below, the following were observed

(i) 1Ω connected at port B draws a current of 3 A

(ii) 2.5 Ω connected at port B draws a current of 2 A

Q48

For the same network, with 6 V dc connected at port A, 1 Ω connected at port B draws 7/3 A. If 8 V dc is connected to port A, the open circuit voltage at port B is

6 V

7 V

8 V

9 V

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Q#20 Two Port Network GATE EC 2011 (Set 1) MCQ +2 marks -0.66 marks

In the circuit shown below, the network N is described by the following Y matrix:

. The voltage gain  is

1/90

-1/90

-1/99

-1/11

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Q#21 Two Port Network GATE EC 2010 (Set 1) MCQ +1 mark -0.33 marks

For the two-port network shown below, the short-circuit admittance parameter matrix is         

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Q#22 Two Port Network GATE EC 2008 (Set 1) MCQ +2 marks -0.66 marks

A two-port network shown below is excited by external dc sources. The voltages and the currents are measured with voltmeters, and ammeters,(all assumed to be ideal), as indicated. Under following switch conditions, the readings obtained are:

(i) -Open,-Closed ;  = 0 A, = 4.5 V,  = 1.5V, = 1 A

(ii) -Closed,-Open ;  = 4 A,= 6 V,  = 6 V,  = 0 A

47.jpg

The z-parameter matrix for this network is         

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Q#23 Two Port Network GATE EC 2008 (Set 1) MCQ +2 marks -0.66 marks

A two-port network shown below is excited by external dc sources. The voltages and the currents are measured with voltmeters, and ammeters,(all assumed to be ideal), as indicated. Under following switch conditions, the readings obtained are:

(i) -Open,-Closed ;  = 0 A, = 4.5 V,  = 1.5V, = 1 A

(ii) -Closed,-Open ;  = 4 A,= 6 V,  = 6 V,  = 0 A

47.jpg

The h-parameter matrix for this network is

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Q#24 Two Port Network GATE EC 2006 (Set 1) MCQ +2 marks -0.66 marks

A two port network is represented by ABCD parameters given by . If port-2 is terminated by , the input impedance seen at port-1 is given by

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Q#25 Two Port Network GATE EC 2006 (Set 1) MCQ +2 marks -0.66 marks

In the two port network shown in the figure below,  and  are, respectively

and

0 and

0 and

and

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Q#26 Two Port Network GATE EC 2005 (Set 1) MCQ +1 mark -0.33 marks

The ABCD parameters of an ideal n:1 transformer shown in figure are . The value of X will be

n

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Q#27 Two Port Network GATE EC 2005 (Set 1) MCQ +2 marks -0.66 marks

The h parameters of the circuit shown in figure are

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Q#28 Two Port Network GATE EC 2004 (Set 1) MCQ +2 marks -0.66 marks

For the lattice circuit shown in Figure,  and . The values of the open circuit impedance parameters  are         

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Q#29 Two Port Network GATE EC 2003 (Set 1) MCQ +2 marks -0.66 marks

The impedance parameters  and  of the two-port network in figure are

 and

 and

 and

 and

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Q#30 Two Port Network GATE EC 2002 (Set 1) MSQ +2 marks -0 marks

Consider the network in Figure.        

Short-circuit admittance parameters

Open-circuit impedance

Short-circuit admittance parameters

Open-circuit impedance

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Q#31 Two Port Network GATE EC 2001 (Set 1) MCQ +1 mark -0.33 marks

The admittance parameter in the 2-port network in Figure is         

-0.2 mho

0.1 mho

-0.05 mho

0.05 mho

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Q#32 Two Port Network GATE EC 2001 (Set 1) MCQ +2 marks -0.66 marks

The Z parameters  and  for the 2-port network in figure are         

;

 ;

 ;

;

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Q#33 Two Port Network GATE EC 2001 (Set 1) MSQ +2 marks -0 marks

The admittance parameters of a 2-port network shown in figure are given by mho,  mho,  mho, mho. The output port is terminated with a load admittance  mho.

C:\Users\abg\Desktop\New 01.jpg

 For 

 For

For

A source  in series with a 0.25Ω resistor is connected to the input port.

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Q#34 Two Port Network GATE EC 1999 (Set 1) MCQ +1 mark -0.33 marks

A 2-port network is shown in Figure. The parameters  for this network can be given by

        

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Q#35 Two Port Network GATE EC 1998 (Set 1) MCQ +1 mark -0.33 marks

The short-circuit admittance matrix of a two-port network is. The two port network is

Non-reciprocal and passive

Non-reciprocal and active

Reciprocal and passive

Reciprocal and active

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Q#36 Two Port Network GATE EC 1994 (Set 1) NAT +1 mark -0 marks

The condition that a 2-port network is reciprocal, can be expressed in terms of its ABCD parameters as . ( True=1, False=0)

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Q#37 Two Port Network GATE EC 1993 (Set 1) MCQ +2 marks -0.66 marks

Find the Y-parameters (short circuit admittance parameters) for the network shown in figure.        

None of these

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Q#38 Two Port Network GATE EC 1992 (Set 1) MSQ +2 marks -0 marks

For a port network to be reciprocal

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Q#39 Two Port Network GATE EC 1991 (Set 1) MCQ +1 mark -0.33 marks

Two two-port networks are connected in cascade. The combination is to be represented as a single two-port network. The parameters of the network are obtained by multiplying the individual

z-parameter matrix

h-parameter matrix

y-parameter matrix

ABCD parameter matrix

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