All Courses
Get the App Signup / Login
Sign in Open App
Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Tests  >  GATE ECE (Electronics) Mock Test Series 2025  >  GATE Mock Test Electronics Engineering (ECE)- 4 - Electronics and Communication Engineering (ECE) MCQ

GATE Mock Test Electronics Engineering (ECE)- 4 - Electronics and Communication Engineering (ECE) MCQ


Test Description

30 Questions MCQ Test GATE ECE (Electronics) Mock Test Series 2025 - GATE Mock Test Electronics Engineering (ECE)- 4

GATE Mock Test Electronics Engineering (ECE)- 4 for Electronics and Communication Engineering (ECE) 2024 is part of GATE ECE (Electronics) Mock Test Series 2025 preparation. The GATE Mock Test Electronics Engineering (ECE)- 4 questions and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus.The GATE Mock Test Electronics Engineering (ECE)- 4 MCQs are made for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for GATE Mock Test Electronics Engineering (ECE)- 4 below.
Solutions of GATE Mock Test Electronics Engineering (ECE)- 4 questions in English are available as part of our GATE ECE (Electronics) Mock Test Series 2025 for Electronics and Communication Engineering (ECE) & GATE Mock Test Electronics Engineering (ECE)- 4 solutions in Hindi for GATE ECE (Electronics) Mock Test Series 2025 course. Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free. Attempt GATE Mock Test Electronics Engineering (ECE)- 4 | 65 questions in 180 minutes | Mock test for Electronics and Communication Engineering (ECE) preparation | Free important questions MCQ to study GATE ECE (Electronics) Mock Test Series 2025 for Electronics and Communication Engineering (ECE) Exam | Download free PDF with solutions
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 1
Save

A lent Rs. 5000 to B for 2 years and Rs. 3000 to C for 4 years on simple interest at the same rate of interest and received Rs. 2200 in total from both as interest. The rate of interest per annum is.

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 1

Let the rate % = R

According to the question,

(5000×2×R)/100 + (3000×4×R)/100 = 2200

100R + 120 R = 2200

220 R = 2200

R = 10%

Hence required rate % = 10%

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 2
Save

Directions: In the following question, a set of three figures X, Y and Z shows a sequence in which a piece of paper is folded and finally cut from a particular section. Below these figures, a set of answer figures marked (a), (b), (c) and (d) shows the design which the paper actually acquires when it is unfolded. You have to select the answer figure which most closely resembles the unfolded piece of paper.

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 2

1 Crore+ students have signed up on EduRev. Have you? Download the App
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 3
Save

The sentences given with blanks are to be filled with an appropriate word(s). Four alternatives are suggested for each question. For each question, choose the correct alternative and click the button corresponding to it.

They abandoned their comrades ______the wolves.

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 3
When something is left in between more than 2 things or persons, ‘among’ is used. There are a number of wolves in the sentence.
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 4
Save

One of the four words given in the four options does not fit the set of words. The odd word from the group is:
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 4
'Hiatus' means 'a pause or break in continuity of a sequence or an activity'. So, options 1, 2 and 3 refer to gap or rest. But, 'end' means 'a termination of a state or situation', thus the odd one out.
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 5
Save

Direction: Study the following information carefully and answer the given questions:

The following pie chart shows the percentage distribution of total number of Apples (Dry + Wet) sold in different days of a week :

The pie chart2 shows the percentage distribution of total number of Apples (Wet) sold in different days of a week.

Find the ratio of Apples (Dry + Wet) sold on Tuesday to that of the Apples (Wet) sold on Thursday?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 5
Required ratio = 13% of 7000: 23% of 4500 = 182:207
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 6
Save

Directions: In the following question, four positions of the same dice having different characters are shown.

Which character is on the surface opposite to '+'?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 6
Four characters will be adjacent to each character. As shown, *, ?, # and $ are adjacent to character +. So, the only character that will be opposite to '+' is '@'.
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 7
Save

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options.

P: July 1969 was to see a transformed Indira Gandhi.

Q: Quite a few people contributed with ideas.

R: She sounded the bugle through her historic ‘Note on Economic Policy and Programme’ that was circulated among delegates at Bangalore on July 9, 1969.

S: But the pivot was P.N.Haksar who gave shape, structure and substance with the help of some of his colleagues in the Prime Minister’s Secretariat.
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 7
P is clearly the first sentence as it introduces the main person of the paragraph, i.e. Indira Gandhi. The pronoun ‘she’ in R refers to Indira Gandhi mention in P. Thus, R forms the second statement. Now, in the sentence R, ‘delegates’ is mentioned which says about the people, who are given in the sentence Q. So, sentence Q must follow R.

Thus, the sequence after rearrangement is PRQS

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 8
Save

Directions: Read the given statement carefully and answer the question that follows.

Statement: There were different streams of freedom movements in colonial India carried out by the moderates, liberals, radicals, socialists and so on.

Which of the following is the best inference from the above statement?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 8
Hetero means different. It is clearly mentioned that the movement comprised of moderates, liberals, radicals, socialists and so on.
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 9
Save

Direction: Read the information carefully and give the answer of the following questions:

Total number of children = 2000

If two-ninths of the children who play football are females, then the number of male football children is approximately what percent of the total number of children who play cricket?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 9
57.4% (If 2/9 th of children play football are female , then male children = 1 - 2/9 = 7/9th of children play football;

Let's take z% of male football children equal to cricket children , then

=> z% of cricket children = 7/9 th of football;

=> z% of (23% of 2000) = 7/9 th of (17% of 2000);

=> z% of 23 = 7/9 th of 17

=> z = 7× 17 × 100 = 57.4%

Short-cut :

Required percentage = (7/9)×17×100/ 23 = 57.4%

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 10
Save

A bottle of whisky contains 3/4th whisky and the rest is water. What quantity of the mixture must be taken away and substituted by equal quantity of water to have half whisky and half water?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 10
Percentage of whisky in mixture = 75%

Percentage of whisky in water = 0%

Therefore, mixture and water should be mixed in the ratio of 2 : 1.

or,

We need to replace 1/3rd or of the mixture with water.

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 11
Save

Determine Rth ands Vth for this network?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 11
According to Millman’s theorem the expressions for total voltage and total resistance is given by,

Vth = V1G1+V2G2+V3G3/(G1+G2+G3)

Rth = 1/ (G1+G2+G3)

G1 = 1/4, G2 = 1/5, G3 = 1/6

V1 = 3V, V2 = 5V, V3 = 7V

Vth = 4.729V, Rth = 1.62Ω

*Answer can only contain numeric values
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 12
Save

A card is drawn at random from an ordinary deck of 52 playing cards. If we are told that card is heart, then information, in bits, is(Answer up to the nearest integer)

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 12
P (heart) = 13/52 =1/4

I = log24 = 2 bits

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 13
Save

Which of the following is CORRECT with respect to LAG-LEAD compensator?
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 13
The lag-lead compensation pole is more dominating than the zero and because of this lag-lead network may introduces positive phase angle to the system when connected in series.

Lead-leg compensators have different frequencies for the zero and the pole. Based on the difference of the two frequencies we get different static gains below the lower frequency and above the higher frequency.

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 14
Save

A 60 Ω coaxial cable feeds a 75 + j 25Ω + dipole antenna. The voltage reflection coefficient Γ and standing wave ratio s are respectively
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 14

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 15
Save

Find the differential equation whose solution represents the family c(y + c)2 = x3
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 15
c(y+c)2 = x3

Differentiating, we get

2c(y + c)dx/dx = 3x2

Pitting this value of 'c' in equation

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 16
Save

If A is a 3-rowed square matrix such that |A| = 2, then |adj(adj (adj A2))| is equal to
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 16
Let B = adj(adjA2), then B is also 3 by 3 matrix

Now,

|adj(B)| = |B|3 -1 = |B|2 = |adj(adjA2)|2 = ((|adjA2|)3 - 1)2 = |adjA2|4 = |adjA|8 = (|A|)3 - 1)8 = |A|16 = 216

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 17
Save

The transfer function of a phase lead controller is given as

Gc(s)=(1+αTs)/(1+Ts) where a > 1 and T is a constant depending on circuit parameter Determine the maximum value of phase lead which can be obtained from the controller.
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 17
For phase lead controller

⇒ puts = jω

Gc(jω) = 1+jaTω/1+jTω

ϕ = ∠Gc(jω)

= tan−1⁡aωT − tan−1⁡ωT

tan⁡ϕ = ωT(a−1)/1+ω2T2…………………(i)

For getting maximum value of phase angle

dϕ/dω = 0

We get ωm = 1/T√a

Putting ωminq

tan⁡ϕm = 0−1/2√a or ϕm

=tan−1⁡[a−1/2√a]

*Answer can only contain numeric values
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 18
Save

A rectangular waveguide of internal dimensions (a = 4 cm and b = 3 cm) is to be operated in TE11 mode. The minimum operating frequency is (Answer up to two decimal places)

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 18
Cut -off Frequency is

For TE11 mode,

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 19
Save

In the circuit shown in fig the op-amp is ideal. If βF= 60, then the total current supplied by the 15 V source is;
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 19
v+ = 5v

= v− = vE

i+15V = iz + ic

= iz + aF + iE

The input current to the op-amp is zero.

= 49.4 mA

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 20
Save

A random process has the power density Pxx(ω) = 6ω2/[1 + ω2]3 . The average power in process is
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 20

= 3/8

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 21
Save

Let A be a 3 x 3 matrix with eigen values 1, -1 and 3. Then
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 21
Singular Matrices have Zero Eigenvalues. Suppose A is a square matrix. Then A is singular if and only if λ=0 is an eigenvalue of A.

Eigen values ofA2+ A are 2,0,12

Eigen values of A2 - A are 0,2,6,

Eigen values of A2 +3A are 4,-2,18

Eigen values of A2 - 3A are -2,4,0.

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 22
Save

Consider the ufb system shown below:

The root - loci, as α is varied, will be
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 22

Thus an equivalent system has G(s) = 1/(s2 + 1) and H(s) = αs. For this function root-locus is (2).

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 23
Save

For the lattice circuit shown in Figure,Za = j2 and Zb = 2. The values of the open circuit impedance parameters

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 23

We know that

V1 = z11I1 + z12I2

V2 = z11I1 + z22I2

where

Consider the given lattice network, when I2=0. There is two similar path in the circuit for the current I1

So I = 1/2I1

For z11 applying KVL at input port, we get

For this circuit z11

= z22 and z12

= z21. Thus

Here Za = 2jΩ&Zb

= 2Ω

Hence Z11

= (2+2j)/2

= 1 + j;Z22 = 1 + j

Z21 = (2j − 2)/2

= −1 + j

= Z12

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 24
Save

The Fourier Series coefficient for the periodic signal shown below is
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 24

T = 2π, ωo = 2π/2π = 1,

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 25
Save

For the circuit in fig let β = 100. The values of Q-point (ICQ .VCEQ) is;
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 25
R1 = 12kΩ, R2 = 2kΩ

RTH = R1 || R2 = 12 || 2 = 1.71 kΩ

3.57 = 1.71k × IBQ + VBE + (β + 1)IBQ × 0.5k − 5

5 − 3.57 − 0.7

= (1.71 + 50.5)IBQ

IBQ = 14μA

IEQ = (100 + 1)IBQ

= 1.412mA

ICQ = 100IBQ

= 1.4mA

VCEQ = 5 − RCICQ − REIBQ + 5

= 5 − (5)(1.4) − (0.5)(1.412) + 5

= 2.3V

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 26
Save

Consider two signals x [n] = {1, 2, - 1} and h [n] = x [n]. The convolution y [n] = x [n] x h [n] is
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 26
y[n] = {1, 4, 2, -4, 1}

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 27
Save

For the AM envelope shown below, determine the total power transmitted is _____W.
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 27
From the envelope shown

Vmax = 10…(1)

Vmin = 2V…(2)

But Vmax = Ac(1 + μ)…(3)

Vmin = Ac(1 − μ)…(4)

From (1),(2),(3),(4)

1 + μ/1 − μ = 10/2 = 5

⇒ μ = 2/3 = 0.67

⇒ Ac = 6V

Peak amplitude of Carrier = AC = 6V

Modulation coefficient = μ = 2/3 = 0.67

*Answer can only contain numeric values
GATE Mock Test Electronics Engineering (ECE)- 4 - Question 28
Save

At 20 GHz, the approximate gain of a parabolic dish antenna of 1 metre and 70% efficiency is(Answer up to two decimal places)

Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 28
λ = c/f = (3 x 108)/(20 x 109) = 3/200

= 44.87 dB

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 29
Save

The inverse z-transform of the signal X(z)= In (α/α - z-1); ROC : |z| > 1/α
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 29
Given X(z) = In (α/α - z-1); ROC : |z| > 1/α

= - in(1 - (αz)-1)

now expanding it by Taylor series, we get

Taking the inverse z - transform, we get

GATE Mock Test Electronics Engineering (ECE)- 4 - Question 30
Save

The simplified form of a logic function is
Detailed Solution for GATE Mock Test Electronics Engineering (ECE)- 4 - Question 30

View more questions
25 docs|263 tests
Join Course
Information about GATE Mock Test Electronics Engineering (ECE)- 4 Page
In this test you can find the Exam questions for GATE Mock Test Electronics Engineering (ECE)- 4 solved & explained in the simplest way possible. Besides giving Questions and answers for GATE Mock Test Electronics Engineering (ECE)- 4, EduRev gives you an ample number of Online tests for practice

Top Courses for Electronics and Communication Engineering (ECE)

Download as PDF

Top Courses for Electronics and Communication Engineering (ECE)

Important Questions for GATE Mock Test Electronics Engineering (ECE)- 4

Find all the important questions for GATE Mock Test Electronics Engineering (ECE)- 4 at EduRev.Get fully prepared for GATE Mock Test Electronics Engineering (ECE)- 4 with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the GATE Mock Test Electronics Engineering (ECE)- 4 syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of GATE Mock Test Electronics Engineering (ECE)- 4 resources.

GATE Mock Test Electronics Engineering (ECE)- 4 MCQs with Answers

Prepare for the GATE Mock Test Electronics Engineering (ECE)- 4 within the Electronics and Communication Engineering (ECE) exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for GATE Mock Test Electronics Engineering (ECE)- 4 GATE ECE (Electronics) Mock Test Series 2025

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace GATE Mock Test Electronics Engineering (ECE)- 4 with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup