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Electronics and Communication Engineering

GATE ECE Circuit analysis PYQs

Build your understanding with focused practice from past exam papers.

How to practice Circuit analysis

Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.

GATE ECE syllabus

Questions 1–10 of 50. Imported answers require independent review unless marked reviewed.

Topic practice 50 questionsPage 1 of 5

Question 13

Open question
ECMCQ1 markNeeds review
The Laplace Transform of the signal

is given by which of the following expressions?
[“*” represents convolution operator]
Your answerChoose one option.

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Question 23

Open question
ECMCQ1 markNeeds review
The relation between the input current (I) and the output voltage (V) of a circuit is governed by the equation:

. The circuit is excited by

, where q is a real valued constant. At

is

.
Which of the following is an equivalent representation of the above case?
Your answerChoose one option.

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Question 30

Open question
ECNAT1 markNeeds review
The output voltage

(in Volt) for the network given in the Figure is __. (rounded off to two decimal places)
Diagram for Electronics and Communication Engineering question 30


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Question 31

Open question
ECNAT1 markNeeds review
Consider the circuit shown in the Figure, where the input

is in Volt. The average power (in mW) dissipated in the load resistance of 1 kΩ at the resonant frequency is __. (rounded off to two decimal places) The circuit is driven by

.
Diagram for Electronics and Communication Engineering question 31


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Question 39

Open question
ECMCQ2 marksNeeds review
In the given circuit,

and

. The phasor diagram for

and

is also shown. Assume that the phase

is

at a frequency of 159.15 kHz. Among the following options, what is the nearest integer value of

?
Diagram for Electronics and Communication Engineering question 39

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Question 51

Open question
ECMCQ2 marksNeeds review
Consider the two-port network as shown in the Figure.
Which of the following options provides the correct set of values of A, B, C and D parameters?
Diagram for Electronics and Communication Engineering question 51

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Question 19

Open question
ECMCQ1 markNeeds review
Consider a part of an electrical network as shown below. Some node voltages, and the current flowing through the

resistor are as indicated. The voltage (in Volts) at node

is _____.
Diagram for Electronics and Communication Engineering question 19

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Question 20

Open question
ECMCQ1 markNeeds review
Let

,

, and

be the currents flowing through the capacitor, inductor, and resistor, respectively, in the circuit given below. The AC admittances are given in Siemens (S). Which one of the following is TRUE?
Diagram for Electronics and Communication Engineering question 20

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Question 39

Open question
ECMCQ2 marksNeeds review
In the circuit below,

is an ideal AC voltmeter and

is an ideal AC ammeter. The source voltage (in Volts) is

.
What should be the value of the variable capacitor

such that the RMS readings on

and

are 25 V and 5 A, respectively?
Diagram for Electronics and Communication Engineering question 39

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Question 40

Open question
ECMCQ2 marksNeeds review
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 ________.
Diagram for Electronics and Communication Engineering question 40

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