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.
2,449
concepts
7,564
question links
72%
answer coverage
701
elite explanations
Priority concepts
Back to branch →aptitude
Logical Reasoning
74 Qs
97% keyed4 explained2010-2026
Rosen — Discrete Mathematics and Its Applications
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
Electronics and Communication Engineering
62 Qs
77% keyed1988-2026
calculus
Electronics and Communication Engineering
54 Qs
74% keyed4 explained1994-2026
linear algebra
Electronics and Communication Engineering
54 Qs
70% keyed1994-2026
transmission line
Electronics and Communication Engineering
35 Qs
69% keyed29 explained1987-2025
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
Electronics and Communication Engineering
47 Qs
81% keyed1987-2025
Electronics and Communication Engineering
482 concepts · 2940 linksTransfer Function
Control Systems - Block Diagram Reduction
72 Qs
78% keyed
2 elite
probability
Probability and Random Variables
66 Qs
64% keyed
3 elite
stability
Signals and Systems - Discrete Time Systems
62 Qs
77% keyed
0 elite
calculus
Engineering Mathematics - Calculus
54 Qs
74% keyed
4 elite
linear algebra
Linear Algebra - Differential Equations
54 Qs
70% keyed
0 elite
transmission line
Transmission Lines
35 Qs
69% keyed
29 elite
LTI system
Signals and Systems - Discrete-Time Fourier Transform
53 Qs
70% keyed
0 elite
Fourier Transform
Signals and Systems - Energy and Power
50 Qs
70% keyed
2 elite
Impulse Response
Circuit Theory - Impulse Response
50 Qs
78% keyed
1 elite
Frequency Response
Control Systems - Frequency Response Analysis
47 Qs
81% keyed
0 elite
Convolution
Signals and Systems - Discrete-Time Fourier Transform
43 Qs
60% keyed
1 elite
BJT
Analog Electronics - BJT Characteristics
41 Qs
78% keyed
0 elite
Bandwidth
Digital Communication - Modulation
38 Qs
74% keyed
0 elite
vector calculus
Engineering Mathematics - Vector Calculus
32 Qs
56% keyed
8 elite
state space
Control Systems - State Space Analysis
33 Qs
82% keyed
0 elite
eigenvalues
Linear Algebra - Differential Equations
33 Qs
76% keyed
0 elite
Electromagnetics
274 concepts · 566 linksintrinsic impedance
EM Waves
15 Qs
80% keyed
6 elite
vswr
Transmission Lines
11 Qs
82% keyed
10 elite
directivity
Antennas
10 Qs
80% keyed
10 elite
electrostatics
Electrostatics
9 Qs
78% keyed
8 elite
characteristic impedance
Transmission Lines
8 Qs
100% keyed
8 elite
radiation pattern
Antennas
9 Qs
89% keyed
6 elite
normal incidence
EM Waves
8 Qs
88% keyed
4 elite
dominant mode
Waveguides
9 Qs
67% keyed
0 elite
TE mode
Waveguides
9 Qs
67% keyed
0 elite
gauss law
Electrostatics
6 Qs
50% keyed
5 elite
poynting vector
EM Waves
7 Qs
57% keyed
3 elite
antenna array
Antennas
6 Qs
67% keyed
4 elite
dipole-antenna
Antennas
6 Qs
50% keyed
4 elite
antenna gain
Antennas
5 Qs
60% keyed
5 elite
circular polarization
EM Waves
5 Qs
100% keyed
4 elite
skin depth
EM Waves
6 Qs
67% keyed
3 elite
Engineering Mathematics
238 concepts · 540 linksroc
Z-Transform
17 Qs
100% keyed
1 elite
initial value problem
Differential Equations
13 Qs
69% keyed
0 elite
second order ode
Differential Equations
12 Qs
83% keyed
0 elite
divergence
Vector Calculus
10 Qs
60% keyed
3 elite
rectangular-pulse
Laplace Transform
11 Qs
82% keyed
0 elite
independent events
Probability & Stats
11 Qs
82% keyed
0 elite
coin toss
Probability & Stats
10 Qs
60% keyed
1 elite
numerical-methods
Numerical Methods
10 Qs
60% keyed
0 elite
taylor series
Calculus (EC)
9 Qs
89% keyed
0 elite
matrix properties
Linear Algebra (EC)
9 Qs
78% keyed
0 elite
derivatives
Calculus (EC)
8 Qs
88% keyed
1 elite
infinite series
Calculus (EC)
8 Qs
63% keyed
1 elite
cauchy integral formula
Complex Variables
7 Qs
86% keyed
0 elite
initial value theorem
Laplace Transform
7 Qs
86% keyed
0 elite
expected value
Probability & Stats
8 Qs
13% keyed
0 elite
gradient
Calculus (EC)
6 Qs
50% keyed
2 elite
Control Systems
187 concepts · 514 linkscharacteristic 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
continuous-time
Stability
15 Qs
87% 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
Stability
13 Qs
62% keyed
0 elite
phase margin
Frequency Response
11 Qs
64% keyed
0 elite
limits
Laplace Transform
9 Qs
89% keyed
0 elite
routh array
Stability
9 Qs
67% keyed
0 elite
open loop transfer function
Time Response
8 Qs
88% keyed
0 elite
LTI systems
Signal Properties
7 Qs
71% keyed
1 elite
state-transition-matrix
State Space
7 Qs
100% keyed
0 elite
partial fractions
Time Response
7 Qs
86% keyed
0 elite
controllability
State Space
6 Qs
100% keyed
0 elite
Communications
215 concepts · 506 linksdiscrete time
Random Processes
25 Qs
64% keyed
0 elite
PCM
Digital Modulation
25 Qs
68% keyed
0 elite
Nyquist rate
Digital Modulation
18 Qs
72% keyed
0 elite
matched filter
Noise
14 Qs
86% keyed
2 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
low-pass filter
Random Processes
8 Qs
88% keyed
0 elite
binomial distribution
Probability & Stats
7 Qs
86% keyed
0 elite
modulation index
Analog Modulation
7 Qs
71% keyed
0 elite
delta modulation
Digital Modulation
6 Qs
83% keyed
1 elite
slope overload
Digital Modulation
6 Qs
83% keyed
1 elite
gaussian-distribution
Probability & Stats
6 Qs
67% keyed
0 elite
white noise
Random Processes
6 Qs
50% keyed
0 elite
coherent detection
Digital Modulation
5 Qs
100% keyed
0 elite
Signals and Systems
189 concepts · 326 linkssinc-function
Laplace Transform
12 Qs
50% keyed
0 elite
signal energy
Fourier Transform
8 Qs
63% keyed
1 elite
system-properties
Signal Properties
7 Qs
100% keyed
2 elite
poles and zeros
Laplace Transform
8 Qs
100% keyed
0 elite
discrete fourier transform
Sampling & DTFT
8 Qs
50% keyed
0 elite
periodicity
Signal Properties
6 Qs
83% keyed
1 elite
group delay
Signal Properties
6 Qs
100% keyed
0 elite
aliasing
Sampling & DTFT
6 Qs
83% keyed
0 elite
frequency spectrum
Sampling & DTFT
5 Qs
80% keyed
0 elite
difference-equation
Z-Transform
5 Qs
60% keyed
0 elite
dft properties
Sampling & DTFT
5 Qs
40% keyed
0 elite
fourier-coefficients
Fourier Series
4 Qs
75% keyed
0 elite
magnitude response
Fourier Transform
4 Qs
75% keyed
0 elite
ideal low pass filter
Fourier Transform
4 Qs
50% keyed
0 elite
impulse train
Sampling & DTFT
4 Qs
50% keyed
0 elite
inverse-z-transform
Z-Transform
4 Qs
50% keyed
0 elite
Logical Reasoning
63 concepts · 322 linksaptitude
Analogy
74 Qs
97% keyed
4 elite
General Aptitude
Seating Arrangement / Puzzles
34 Qs
97% keyed
2 elite
logical reasoning
Verbal Ability - Word Puzzles
17 Qs
82% keyed
2 elite
GATE
Statements and Conclusions
20 Qs
50% keyed
0 elite
verbal ability
Verbal Ability - Word Puzzles
14 Qs
86% keyed
0 elite
Geometry
Geometry - Area Calculation
13 Qs
77% keyed
1 elite
reading comprehension
Reading Comprehension - Inference
12 Qs
83% keyed
1 elite
permutations
Permutations and Combinations
13 Qs
92% keyed
0 elite
analogy
Analogy
10 Qs
80% keyed
0 elite
inference
Reading Comprehension - Inference
8 Qs
63% keyed
0 elite
puzzle
Seating Arrangement / Puzzles
8 Qs
63% keyed
0 elite
Ratio
Geometry - Area Calculation
6 Qs
67% keyed
1 elite
seating arrangement
Seating Arrangement / Puzzles
6 Qs
67% keyed
0 elite
set theory
Set Theory / Venn Diagrams
5 Qs
80% keyed
1 elite
logic
Statements and Conclusions
5 Qs
80% keyed
0 elite
data interpretation
Set Theory / Venn Diagrams
5 Qs
40% keyed
0 elite
Electrical Engineering
40 concepts · 311 linksLaplace transform
Control Systems - Time Domain Analysis
70 Qs
89% keyed
1 elite
z-transform
Signals and Systems - Z-Transform
37 Qs
81% keyed
1 elite
differential equation
Differential Equations - Families of Curves
30 Qs
77% keyed
0 elite
Root Locus
Control Systems - Root Locus
18 Qs
67% keyed
0 elite
steady state
Control Systems - Second Order Systems
17 Qs
65% keyed
1 elite
line integral
Engineering Mathematics - Vector Calculus - Line Integrals
13 Qs
54% keyed
2 elite
inequalities
Calculus - Mean Value Theorem
8 Qs
88% keyed
0 elite
expectation
Probability and Random Variables
9 Qs
56% keyed
0 elite
conservative field
Vector Calculus - Line Integrals
7 Qs
57% keyed
2 elite
conditional probability
Probability and Random Variables
7 Qs
57% keyed
1 elite
time response
Control Systems - Second Order Systems
7 Qs
71% keyed
0 elite
zeros
Control Systems - Bode Plot
8 Qs
50% keyed
0 elite
nMOS
Digital Electronics - CMOS Inverter
8 Qs
25% 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
fundamental period
Signals and Systems
5 Qs
60% keyed
1 elite
Digital Circuits
156 concepts · 291 linkscombinational 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
propagation delay
Logic Families
10 Qs
50% keyed
0 elite
TTL
Logic Families
7 Qs
86% keyed
0 elite
2's complement
Number Systems & Boolean
5 Qs
100% keyed
0 elite
logic-simplification
Number Systems & Boolean
4 Qs
100% keyed
0 elite
minterms
Number Systems & Boolean
4 Qs
100% keyed
0 elite
Boolean functions
Memory
4 Qs
75% keyed
0 elite
half-subtractor
Combinational
4 Qs
100% keyed
0 elite
logic-minimization
Number Systems & Boolean
4 Qs
75% keyed
0 elite
NAND gate
Number Systems & Boolean
4 Qs
50% keyed
0 elite
synchronous counter
Sequential
4 Qs
50% keyed
0 elite
dac
ADC/DAC
4 Qs
25% keyed
0 elite
truth table
Memory
4 Qs
25% keyed
0 elite
2s complement
Number Systems & Boolean
3 Qs
100% keyed
0 elite
Analog Circuits
131 concepts · 247 linkslinearity
BJT Amplifiers
11 Qs
91% keyed
2 elite
saturation region
BJT
11 Qs
64% keyed
0 elite
input-resistance
BJT Amplifiers
10 Qs
90% keyed
0 elite
negative-feedback
Feedback & Stability
9 Qs
67% keyed
0 elite
output resistance
Diode Circuits
8 Qs
88% keyed
0 elite
feedback amplifiers
Feedback & Stability
7 Qs
100% keyed
0 elite
small-signal-model
BJT Amplifiers
7 Qs
71% keyed
0 elite
output-impedance
Op-Amp
6 Qs
100% keyed
0 elite
drain current
FET
5 Qs
80% keyed
0 elite
common-emitter
BJT Amplifiers
5 Qs
80% keyed
0 elite
JFET
FET
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
decibels
Op-Amp
3 Qs
100% keyed
1 elite
breakdown voltage
BJT
3 Qs
100% keyed
0 elite
General Aptitude
105 concepts · 234 linksenglish
English Grammar - Antonyms
25 Qs
100% keyed
0 elite
grammar
Verbal Ability - Grammar (Conditional Sentences)
14 Qs
86% keyed
0 elite
roots
Linear Algebra (EC)
9 Qs
89% keyed
0 elite
verbal
9 Qs
100% keyed
0 elite
linear equations
Linear Algebra (EC)
8 Qs
100% keyed
0 elite
percentages
Linear Algebra (EC)
7 Qs
100% keyed
0 elite
combinatorics
Probability & Stats
6 Qs
100% keyed
1 elite
efficiency
Probability & Stats
6 Qs
83% keyed
1 elite
venn-diagram
Probability & Stats
6 Qs
100% keyed
1 elite
sequence
Verbal Ability - Paragraph Formation
5 Qs
60% keyed
1 elite
verbal aptitude
Verbal Aptitude
5 Qs
100% keyed
0 elite
functions
Calculus (EC)
4 Qs
100% keyed
0 elite
monotonicity
Calculus (EC)
4 Qs
100% keyed
0 elite
conditionals
English Grammar
3 Qs
100% keyed
0 elite
distance
Calculus (EC)
3 Qs
100% keyed
0 elite
math
Calculus (EC)
3 Qs
100% keyed
0 elite
Electronic Devices and Vlsi
152 concepts · 223 linksdoping
Fabrication
7 Qs
86% keyed
0 elite
mass action law
Semiconductors
7 Qs
71% keyed
0 elite
reverse bias
Diodes
7 Qs
86% keyed
0 elite
channel-length-modulation
Diodes
6 Qs
67% keyed
0 elite
minority carriers
Semiconductors
5 Qs
100% keyed
0 elite
excess carriers
Semiconductors
5 Qs
80% keyed
0 elite
units
Semiconductors
3 Qs
100% keyed
1 elite
built-in-potential
Diodes
3 Qs
100% keyed
0 elite
dry oxidation
Fabrication
3 Qs
100% keyed
0 elite
recombination
Semiconductors
3 Qs
100% keyed
0 elite
base-width-modulation
BJT
3 Qs
67% keyed
0 elite
diode equation
Diodes
3 Qs
67% keyed
0 elite
early-effect
BJT
3 Qs
67% keyed
0 elite
oxide charge
FET
3 Qs
33% keyed
0 elite
band-gap
Semiconductors
2 Qs
100% keyed
0 elite
boron
Fabrication
2 Qs
100% keyed
0 elite
Network Theory
89 concepts · 170 linkscurrent-gain
BJT
13 Qs
85% 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
average power
Steady-State AC
7 Qs
43% 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
transmission parameters
Two-Port Networks
5 Qs
80% keyed
0 elite
complex conjugate
Circuit Laws
3 Qs
100% keyed
0 elite
derivative
Transient Analysis
3 Qs
100% keyed
0 elite
graph-theory
Circuit Laws
3 Qs
100% keyed
0 elite
network-topology
Circuit Laws
3 Qs
100% keyed
0 elite
superposition
Steady-State AC
3 Qs
100% keyed
0 elite
parallel-rlc
Transient Analysis
3 Qs
67% keyed
0 elite
base-width
BJT
2 Qs
100% keyed
0 elite
Mathematics
58 concepts · 158 linksuniform distribution
Probability - Continuous Random Variables
17 Qs
53% keyed
0 elite
algebra
Logarithms
13 Qs
85% keyed
1 elite
Complex Integration
Complex Analysis - Contour Integration
12 Qs
83% keyed
0 elite
combinations
Permutations and Combinations
13 Qs
100% keyed
0 elite
Residue Theorem
Complex Analysis - Contour Integration
10 Qs
60% keyed
0 elite
definite integral
Calculus - Definite Integrals and Bounds
6 Qs
50% keyed
0 elite
mathematics
Logarithms
5 Qs
60% keyed
0 elite
series
Sequences and Series
4 Qs
100% keyed
0 elite
bounds
Calculus - Definite Integrals and Bounds
3 Qs
67% keyed
1 elite
summation
Binomial Theorem
3 Qs
67% keyed
0 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
Microprocessors
54 concepts · 157 linksmicroprocessor
Memory
32 Qs
94% keyed
0 elite
8085
Memory
31 Qs
94% keyed
0 elite
assembly
Sequential
15 Qs
93% keyed
0 elite
Microprocessors
ADC/DAC
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
accumulator
Sequential
3 Qs
100% keyed
0 elite
instructions
Sequential
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
ADC/DAC
2 Qs
100% keyed
0 elite
multiplication
Sequential
2 Qs
100% keyed
0 elite
RLC
Sequential
2 Qs
100% keyed
0 elite
English
4 concepts · 29 linksPhysics
7 concepts · 20 linksmagnetic field
Electromagnetism - Magnetic Field
14 Qs
64% keyed
6 elite
electric flux
Electromagnetism - Gauss's Law
1 Qs
0% keyed
0 elite
Gauss's Law
Electromagnetism - Gauss's Law
1 Qs
0% keyed
0 elite
line charge
Electromagnetism - Gauss's Law
1 Qs
0% keyed
0 elite
physics
Electromagnetism - Magnetic Field
1 Qs
0% keyed
0 elite
quarter-cylinder
Electromagnetism - Gauss's Law
1 Qs
0% keyed
0 elite
wires
Electromagnetism - Magnetic Field
1 Qs
0% keyed
0 elite