PYQ intelligence beta
GATE Electronics & Communication Concept Mastery Map
Existing subject, topic, and tag enrichment is now organized into a concept spine: recurrence, answer-key coverage, rich explanation coverage, and source-book anchors.
1,000
concepts
6,053
question links
73%
answer coverage
557
elite explanations
Priority concepts
Back to branch →aptitude
General Aptitude
74 Qs
97% keyed4 explained2010-2026
transfer function
Electronics and Communication Engineering
72 Qs
78% keyed2 explained1987-2026
laplace transform
Electrical Engineering
70 Qs
89% keyed1 explained1987-2026
probability
Electronics and Communication Engineering
66 Qs
64% keyed3 explained2001-2026
stability
Signals and Systems
62 Qs
77% keyed1988-2026
calculus
Electronics and Communication Engineering
54 Qs
74% keyed4 explained1994-2026
linear algebra
Engineering Mathematics
54 Qs
70% keyed1994-2026
B. S. Grewal — Higher Engineering Mathematics
lti system
Electronics and Communication Engineering
53 Qs
70% keyed1988-2024
fourier transform
Electronics and Communication Engineering
50 Qs
70% keyed2 explained1988-2026
impulse response
Electronics and Communication Engineering
50 Qs
78% keyed1 explained1987-2026
frequency response
Control Systems
47 Qs
81% keyed1987-2025
convolution
Signals and Systems
43 Qs
60% keyed1 explained1987-2026
Electronics and Communication Engineering
195 concepts · 1633 linkstransfer function
Control Systems - State Space Analysis
72 Qs
78% keyed
2 elite
probability
Information Theory - Mutual Information
66 Qs
64% keyed
3 elite
calculus
Differential Equations
54 Qs
74% keyed
4 elite
lti system
Signals and Systems - Z-transform
53 Qs
70% keyed
0 elite
fourier transform
Signals and Systems - Fourier Transform
50 Qs
70% keyed
2 elite
impulse response
Circuit Theory - Impulse Response
50 Qs
78% keyed
1 elite
bjt
Analog Electronics - BJT Biasing
41 Qs
78% keyed
0 elite
bandwidth
Signals and Systems - Sampling Theorem
38 Qs
74% keyed
0 elite
transmission line
Transmission Lines
35 Qs
69% keyed
29 elite
state space
Control Systems - State Space Analysis
33 Qs
82% keyed
0 elite
control systems
Control Systems - State Space Analysis
32 Qs
59% keyed
0 elite
differential equation
Differential Equations
30 Qs
77% keyed
0 elite
differential equations
Circuit Theory - Impulse Response
30 Qs
73% keyed
0 elite
signals and systems
Signals and Systems - Power Spectral Density
22 Qs
77% keyed
1 elite
information theory
Information Theory - Mutual Information
22 Qs
41% keyed
0 elite
digital logic
Digital Circuits - Sequential Circuits
21 Qs
81% keyed
0 elite
Signals and Systems
98 concepts · 649 linksstability
Z-Transform
62 Qs
77% keyed
0 elite
convolution
Signal Properties
43 Qs
60% keyed
1 elite
z-transform
Z-Transform
37 Qs
81% keyed
1 elite
discrete time
Fourier Series
25 Qs
64% keyed
0 elite
causality
Signal Properties
18 Qs
89% keyed
2 elite
fourier series
Fourier Series
18 Qs
78% keyed
1 elite
nyquist rate
Sampling & DTFT
18 Qs
72% keyed
0 elite
roc
Z-Transform
17 Qs
100% keyed
1 elite
dtft
Signal Properties
15 Qs
60% keyed
1 elite
continuous time
Signal Properties
15 Qs
87% keyed
0 elite
region of convergence
Z-Transform
15 Qs
87% keyed
0 elite
autocorrelation
Signal Properties
15 Qs
60% keyed
0 elite
matched filter
Signal Properties
14 Qs
86% keyed
2 elite
dft
Sampling & DTFT
12 Qs
50% keyed
0 elite
sinc function
Sampling & DTFT
12 Qs
50% keyed
0 elite
linearity
Z-Transform
11 Qs
91% keyed
2 elite
Electromagnetics
122 concepts · 641 linkselectric field
EM Waves
25 Qs
76% keyed
13 elite
reflection coefficient
Transmission Lines
24 Qs
75% keyed
14 elite
plane wave
EM Waves
23 Qs
78% keyed
12 elite
rectangular waveguide
Waveguides
23 Qs
52% keyed
0 elite
antenna
EM Waves
19 Qs
89% keyed
17 elite
input impedance
Transmission Lines
19 Qs
68% keyed
7 elite
polarization
EM Waves
17 Qs
76% keyed
11 elite
phase velocity
EM Waves
17 Qs
59% keyed
4 elite
intrinsic impedance
EM Waves
15 Qs
80% keyed
6 elite
cutoff frequency
Waveguides
15 Qs
60% keyed
0 elite
magnetic field
Magnetostatics
14 Qs
64% keyed
6 elite
curl
Time-Varying Fields
13 Qs
69% keyed
7 elite
waveguide
Waveguides
13 Qs
77% keyed
1 elite
vswr
Transmission Lines
11 Qs
82% keyed
10 elite
directivity
Antennas
10 Qs
80% keyed
10 elite
divergence
Electrostatics
10 Qs
60% keyed
3 elite
Engineering Mathematics
92 concepts · 529 linkslinear algebra
Linear Algebra (EC)
54 Qs
70% keyed
0 elite
eigenvalues
Linear Algebra (EC)
33 Qs
76% keyed
0 elite
matrix
Linear Algebra (EC)
18 Qs
61% keyed
0 elite
optimization
Calculus (EC)
15 Qs
53% keyed
1 elite
initial value problem
Differential Equations
13 Qs
69% keyed
0 elite
complex variables
Complex Variables
13 Qs
62% keyed
0 elite
complex integration
Complex Variables
12 Qs
83% keyed
0 elite
second order ode
Differential Equations
12 Qs
83% keyed
0 elite
variance
Probability & Stats
11 Qs
64% keyed
1 elite
independent events
Probability & Stats
11 Qs
82% keyed
0 elite
integration
Differential Equations
11 Qs
55% keyed
0 elite
coin toss
Probability & Stats
10 Qs
60% keyed
1 elite
eigenvectors
Linear Algebra (EC)
10 Qs
80% keyed
0 elite
numerical methods
Numerical Methods
10 Qs
60% keyed
0 elite
residue theorem
Complex Variables
10 Qs
60% keyed
0 elite
taylor series
Calculus (EC)
9 Qs
89% keyed
0 elite
Control Systems
80 concepts · 478 linksfrequency response
Frequency Response
47 Qs
81% keyed
0 elite
characteristic equation
Stability
35 Qs
80% keyed
0 elite
step response
State Space
29 Qs
79% keyed
1 elite
second order system
Time Response
26 Qs
81% keyed
0 elite
final value theorem
State Space
21 Qs
90% keyed
0 elite
root locus
Stability
18 Qs
67% keyed
0 elite
damping ratio
Time Response
15 Qs
80% keyed
0 elite
gain margin
Frequency Response
13 Qs
69% keyed
0 elite
unity feedback
Time Response
13 Qs
62% keyed
0 elite
routh-hurwitz
Stability
12 Qs
58% keyed
0 elite
phase margin
Frequency Response
11 Qs
64% keyed
0 elite
gain crossover frequency
Frequency Response
9 Qs
78% keyed
0 elite
negative feedback
Frequency Response
9 Qs
67% keyed
0 elite
routh array
Stability
9 Qs
67% keyed
0 elite
open loop transfer function
Time Response
8 Qs
88% keyed
0 elite
bode plot
Frequency Response
8 Qs
50% keyed
0 elite
Communications
93 concepts · 402 linkspcm
Digital Modulation
25 Qs
68% keyed
0 elite
digital communication
Digital Modulation
18 Qs
72% keyed
3 elite
sampling
Multiplexing
18 Qs
83% keyed
0 elite
uniform distribution
Digital Modulation
17 Qs
53% keyed
0 elite
amplitude modulation
Analog Modulation
13 Qs
62% keyed
0 elite
sqnr
Digital Modulation
13 Qs
62% keyed
0 elite
probability of error
Digital Modulation
10 Qs
80% keyed
3 elite
bit rate
Digital Modulation
10 Qs
70% keyed
0 elite
digital modulation
Digital Modulation
8 Qs
88% keyed
2 elite
binomial distribution
Probability & Stats
7 Qs
86% keyed
0 elite
modulation index
Analog Modulation
7 Qs
71% keyed
0 elite
isi
Digital Modulation
6 Qs
83% keyed
2 elite
delta modulation
Digital Modulation
6 Qs
83% keyed
1 elite
slope overload
Digital Modulation
6 Qs
83% keyed
1 elite
gaussian noise
Random Processes
6 Qs
83% keyed
0 elite
gaussian distribution
Probability & Stats
6 Qs
67% keyed
0 elite
General Aptitude
52 concepts · 346 linksaptitude
Linear Algebra (EC)
74 Qs
97% keyed
4 elite
english
English Grammar - Antonyms
25 Qs
100% keyed
0 elite
vocabulary
English Grammar - Antonyms
22 Qs
86% keyed
0 elite
algebra
Linear Algebra (EC)
13 Qs
85% keyed
1 elite
geometry
Calculus (EC)
13 Qs
77% keyed
1 elite
reading comprehension
Calculus (EC)
12 Qs
83% keyed
1 elite
analogy
Analogy
10 Qs
80% keyed
0 elite
verbal
9 Qs
100% keyed
0 elite
roots
Linear Algebra (EC)
9 Qs
89% keyed
0 elite
linear equations
Linear Algebra (EC)
8 Qs
100% keyed
0 elite
inequalities
Linear Algebra (EC)
8 Qs
88% keyed
0 elite
inference
Calculus (EC)
8 Qs
63% keyed
0 elite
puzzle
Logical Reasoning
8 Qs
63% keyed
0 elite
percentages
Linear Algebra (EC)
7 Qs
100% keyed
0 elite
combinatorics
Probability & Stats
6 Qs
100% keyed
1 elite
venn diagram
Probability & Stats
6 Qs
100% keyed
1 elite
Electronic Devices and Vlsi
68 concepts · 266 linkssteady state
Semiconductors
17 Qs
65% keyed
1 elite
threshold voltage
FET
12 Qs
67% keyed
0 elite
mobility
Semiconductors
11 Qs
73% keyed
0 elite
n-type
Semiconductors
9 Qs
67% keyed
0 elite
carrier concentration
Semiconductors
8 Qs
100% keyed
0 elite
nmos
FET
8 Qs
25% keyed
0 elite
doping
Semiconductors
7 Qs
86% keyed
0 elite
reverse bias
Diodes
7 Qs
86% keyed
0 elite
mass action law
Semiconductors
7 Qs
71% keyed
0 elite
thermal voltage
Semiconductors
7 Qs
71% keyed
0 elite
small signal model
Diodes
7 Qs
71% keyed
0 elite
fermi level
Semiconductors
7 Qs
43% keyed
0 elite
channel length modulation
Diodes
6 Qs
67% keyed
0 elite
reverse saturation current
Diodes
6 Qs
50% keyed
0 elite
minority carriers
Semiconductors
5 Qs
100% keyed
0 elite
excess carriers
Semiconductors
5 Qs
80% keyed
0 elite
Digital Circuits
52 concepts · 221 linksboolean algebra
Number Systems & Boolean
21 Qs
90% keyed
0 elite
quantization noise
ADC/DAC
16 Qs
75% keyed
0 elite
combinational logic
Combinational
12 Qs
92% keyed
0 elite
logic families
Logic Families
12 Qs
92% keyed
0 elite
number systems
Number Systems & Boolean
10 Qs
100% keyed
0 elite
multiplexer
Combinational
9 Qs
56% keyed
0 elite
frequency
Logic Families
8 Qs
50% keyed
4 elite
ttl
Logic Families
7 Qs
86% keyed
0 elite
2's complement
Number Systems & Boolean
5 Qs
100% keyed
0 elite
hexadecimal
Number Systems & Boolean
5 Qs
80% keyed
0 elite
logic simplification
Number Systems & Boolean
4 Qs
100% keyed
0 elite
minterms
Number Systems & Boolean
4 Qs
100% keyed
0 elite
half-subtractor
Combinational
4 Qs
100% keyed
0 elite
boolean functions
Memory
4 Qs
75% keyed
0 elite
logic minimization
Number Systems & Boolean
4 Qs
75% keyed
0 elite
MUX
Combinational
4 Qs
50% keyed
0 elite
Electrical Engineering
19 concepts · 194 linkslaplace transform
Control Systems - Time Domain Analysis
70 Qs
89% keyed
1 elite
vector calculus
Engineering Mathematics - Vector Calculus - Line Integrals
32 Qs
56% keyed
8 elite
line integral
Engineering Mathematics - Vector Calculus - Line Integrals
13 Qs
54% keyed
2 elite
expectation
Probability and Random Variables
9 Qs
56% keyed
0 elite
zeros
Signals and Systems - Z-Transform
8 Qs
50% keyed
0 elite
conservative field
Vector Calculus - Line Integrals
7 Qs
57% keyed
2 elite
time response
Control Systems - Second Order Systems
7 Qs
71% keyed
0 elite
block diagram
Control Systems - Block Diagram Reduction
7 Qs
57% keyed
0 elite
random variables
Probability and Random Variables
6 Qs
67% keyed
1 elite
instantaneous frequency
Communication Systems - Modulation
6 Qs
50% keyed
0 elite
mathematics
Engineering Mathematics - Vector Calculus - Line Integrals
5 Qs
60% keyed
0 elite
RC circuit
Analog Electronics - Diode Circuits / RC Circuits
5 Qs
40% keyed
0 elite
analytic function
Complex Analysis - Analytic Functions
4 Qs
50% keyed
0 elite
phase modulation
Communication Systems - Modulation
4 Qs
25% keyed
0 elite
exact differential
Vector Calculus - Line Integrals
3 Qs
33% keyed
0 elite
capacitor voltage
Analog Electronics - Diode Circuits / RC Circuits
2 Qs
50% keyed
0 elite
Analog Circuits
33 concepts · 181 linksmosfet
FET
33 Qs
58% keyed
0 elite
transconductance
Op-Amp
17 Qs
65% keyed
0 elite
saturation region
BJT
11 Qs
64% keyed
0 elite
input resistance
BJT Amplifiers
10 Qs
90% keyed
0 elite
linear region
FET
9 Qs
33% keyed
0 elite
output resistance
Diode Circuits
8 Qs
88% keyed
0 elite
cut-off frequency
BJT Amplifiers
8 Qs
63% keyed
0 elite
feedback amplifiers
Feedback & Stability
7 Qs
100% keyed
0 elite
output impedance
Op-Amp
6 Qs
100% keyed
0 elite
differential amplifier
Op-Amp
6 Qs
83% keyed
0 elite
transient response
ADC/DAC
6 Qs
33% keyed
0 elite
drain current
FET
5 Qs
80% keyed
0 elite
common emitter
BJT Amplifiers
5 Qs
80% keyed
0 elite
cmrr
Op-Amp
4 Qs
75% keyed
0 elite
power amplifier
Power Amplifiers
4 Qs
75% keyed
0 elite
sample and hold
ADC/DAC
4 Qs
50% keyed
0 elite
Network Theory
33 concepts · 153 linksac circuits
Steady-State AC
15 Qs
73% keyed
0 elite
current gain
BJT
13 Qs
85% keyed
0 elite
impedance matching
Circuit Laws
11 Qs
73% keyed
3 elite
resonance
Steady-State AC
10 Qs
60% keyed
0 elite
reciprocity
Two-Port Networks
7 Qs
100% keyed
2 elite
series RLC
Steady-State AC
7 Qs
86% keyed
0 elite
symmetry
Circuit Laws
7 Qs
57% keyed
0 elite
quality factor
Steady-State AC
7 Qs
43% keyed
0 elite
doping concentration
BJT
6 Qs
100% keyed
0 elite
two-port networks
Two-Port Networks
6 Qs
67% keyed
0 elite
RLC circuit
Transient Analysis
5 Qs
80% keyed
0 elite
transmission parameters
Two-Port Networks
5 Qs
80% keyed
0 elite
abcd parameters
Two-Port Networks
4 Qs
75% keyed
0 elite
network theory
Circuit Laws
4 Qs
50% keyed
0 elite
rl circuit
Transient Analysis
4 Qs
50% keyed
0 elite
complex conjugate
Circuit Laws
3 Qs
100% keyed
0 elite
Microprocessors
18 concepts · 126 linksmicroprocessor
Sequential
32 Qs
94% keyed
0 elite
8085
Sequential
31 Qs
94% keyed
0 elite
assembly
Sequential
15 Qs
93% keyed
0 elite
microprocessors
Memory
9 Qs
100% keyed
0 elite
memory interfacing
Memory
4 Qs
100% keyed
0 elite
stack
Sequential
4 Qs
100% keyed
0 elite
interrupts
Sequential
4 Qs
100% keyed
0 elite
registers
Sequential
4 Qs
50% keyed
0 elite
accumulator
Sequential
3 Qs
100% keyed
0 elite
instructions
Sequential
3 Qs
100% keyed
0 elite
linked question
Memory
3 Qs
100% keyed
0 elite
address bus
Memory
2 Qs
100% keyed
0 elite
architecture
Sequential
2 Qs
100% keyed
0 elite
carry flag
Sequential
2 Qs
100% keyed
0 elite
flags
Sequential
2 Qs
100% keyed
0 elite
interfacing
Memory
2 Qs
100% keyed
0 elite
Logical Reasoning
15 concepts · 123 linksgeneral aptitude
Seating Arrangement / Puzzles
34 Qs
97% keyed
2 elite
GATE
Verbal Ability - Word Puzzles
20 Qs
50% keyed
0 elite
logical reasoning
Verbal Ability - Word Puzzles
17 Qs
82% keyed
2 elite
verbal ability
Verbal Ability - Word Puzzles
14 Qs
86% keyed
0 elite
seating arrangement
Seating Arrangement / Puzzles
6 Qs
67% keyed
0 elite
set theory
Set Theory / Venn Diagrams
5 Qs
80% keyed
1 elite
data interpretation
Data Interpretation - Bar Chart
5 Qs
40% keyed
0 elite
deduction
Syllogism / Deductive Reasoning
4 Qs
75% keyed
0 elite
word problem
Set Theory / Venn Diagrams
4 Qs
75% keyed
0 elite
reasoning
Syllogism / Deductive Reasoning
4 Qs
75% keyed
0 elite
logic puzzle
Puzzles and Seating Arrangement
2 Qs
100% keyed
0 elite
counting
Counting Figures
2 Qs
50% keyed
0 elite
non-verbal reasoning
Visual Reasoning - Pattern Completion
2 Qs
50% keyed
0 elite
perimeter
Geometry - Folding
2 Qs
50% keyed
0 elite
visual reasoning
Visual Reasoning - Pattern Completion
2 Qs
50% keyed
0 elite
Mathematics
27 concepts · 90 linkscombinations
Permutations and Combinations
13 Qs
100% keyed
0 elite
permutations
Permutations and Combinations
13 Qs
92% keyed
0 elite
double integral
Calculus - Double Integrals
7 Qs
57% keyed
0 elite
definite integral
Calculus - Definite Integrals and Bounds
6 Qs
50% keyed
0 elite
series
Series Convergence
4 Qs
100% keyed
0 elite
bounds
Calculus - Definite Integrals and Bounds
3 Qs
67% keyed
1 elite
arrangement
Permutations and Combinations
3 Qs
100% keyed
0 elite
committee
Permutations and Combinations
3 Qs
100% keyed
0 elite
logarithms
Logarithms
2 Qs
100% keyed
1 elite
without replacement
Probability
2 Qs
100% keyed
1 elite
latitude
Calculus - Surface Area
2 Qs
50% keyed
1 elite
surface area
Calculus - Surface Area
2 Qs
50% keyed
1 elite
at least
Permutations and Combinations
2 Qs
100% keyed
0 elite
binomial coefficients
Binomial Theorem
2 Qs
100% keyed
0 elite
binomial expansion
Binomial Theorem
2 Qs
100% keyed
0 elite
distinct objects
Permutations and Combinations
2 Qs
100% keyed
0 elite