PYQ intelligence beta
GATE Mechanical Engineering 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
6,756
question links
77%
answer coverage
642
elite explanations
Priority concepts
Back to branch →thermodynamics
Mechanical Engineering
83 Qs
76% keyed2 explained1992-2026
calculus
Mathematics
78 Qs
86% keyed3 explained1993-2026
manufacturing
Mechanical Engineering
68 Qs
79% keyed2 explained1988-2026
heat transfer
Heat Transfer
67 Qs
79% keyed3 explained1990-2026
kinematics
Mechanical Engineering
63 Qs
83% keyed2 explained1988-2026
aptitude
Logical Reasoning
59 Qs
97% keyed47 explained2014-2026
Rosen — Discrete Mathematics and Its Applications
machining
Production Engineering
59 Qs
83% keyed15 explained1989-2026
probability
Mechanical Engineering
58 Qs
81% keyed3 explained1998-2026
ideal gas
Mechanical Engineering
53 Qs
68% keyed1993-2026
casting
Mechanical Engineering
52 Qs
69% keyed1987-2025
linear algebra
Engineering Mathematics
50 Qs
82% keyed1994-2025
B. S. Grewal — Higher Engineering Mathematics
fluid mechanics
Mechanical Engineering
47 Qs
87% keyed1 explained1996-2026
Mechanical Engineering
382 concepts · 2930 linksthermodynamics
Thermodynamics - Maxwell Relations
83 Qs
76% keyed
2 elite
manufacturing
Manufacturing Engineering - Metal Forming
68 Qs
79% keyed
2 elite
kinematics
Kinematics of Rigid Bodies
63 Qs
83% keyed
2 elite
probability
Probability
58 Qs
81% keyed
3 elite
ideal gas
Thermodynamics - Work and Heat Transfer
53 Qs
68% keyed
0 elite
casting
Manufacturing Engineering - Casting
52 Qs
69% keyed
0 elite
fluid mechanics
Fluid Mechanics - Boundary Layer
47 Qs
87% keyed
1 elite
shear stress
Fluid Mechanics - Boundary Layer
37 Qs
81% keyed
2 elite
pipe flow
Fluid Mechanics - Pipe Flow
30 Qs
70% keyed
15 elite
linear programming
Industrial Engineering - Production Planning
28 Qs
75% keyed
0 elite
optimization
Industrial Engineering - Production Planning and Control
28 Qs
57% keyed
0 elite
radiation
Heat Transfer - Radiation
27 Qs
74% keyed
0 elite
turning
Manufacturing Engineering - Machining
24 Qs
54% keyed
4 elite
differential equations
Differential Equations
24 Qs
83% keyed
0 elite
cutting speed
Manufacturing - Machining
23 Qs
61% keyed
7 elite
natural frequency
Vibrations - Damped Vibrations
23 Qs
78% keyed
5 elite
Production Engineering
125 concepts · 780 linksmachining
Machining
59 Qs
83% keyed
15 elite
metrology
Metrology
36 Qs
86% keyed
0 elite
welding
Joining
25 Qs
80% keyed
3 elite
cnc
Machine Tools
21 Qs
90% keyed
3 elite
geometry
Modern Manufacturing
18 Qs
83% keyed
6 elite
merchant circle
Machining
18 Qs
50% keyed
5 elite
milling
Machine Tools
18 Qs
83% keyed
1 elite
rolling
Forming
18 Qs
56% keyed
1 elite
sheet metal
Forming
18 Qs
72% keyed
0 elite
solidification time
Casting
18 Qs
50% keyed
0 elite
limits and fits
Metrology
16 Qs
94% keyed
0 elite
true strain
Forming
15 Qs
67% keyed
1 elite
feed rate
Machine Tools
15 Qs
67% keyed
0 elite
cutting force
Machining
14 Qs
79% keyed
5 elite
material properties
Stress & Strain
13 Qs
85% keyed
3 elite
coefficient of friction
Machining
12 Qs
58% keyed
1 elite
Engineering Mathematics
96 concepts · 634 linkslinear algebra
Linear Algebra (ME)
50 Qs
82% keyed
0 elite
vector calculus
Calculus (ME)
31 Qs
71% keyed
1 elite
differential equation
Differential Equations (ME)
26 Qs
77% keyed
0 elite
matrix
Linear Algebra - Eigenvalues and Eigenvectors
23 Qs
74% keyed
0 elite
definite integral
Calculus (ME)
21 Qs
76% keyed
1 elite
determinant
Calculus (ME)
19 Qs
74% keyed
0 elite
numerical integration
Numerical Methods (ME)
18 Qs
61% keyed
0 elite
engineering mathematics
Differential Equations (ME)
16 Qs
94% keyed
0 elite
laplace transform
Differential Equations (ME)
16 Qs
81% keyed
0 elite
integration
Differential Equations (ME)
14 Qs
79% keyed
1 elite
numerical methods
Numerical Methods (ME)
14 Qs
50% keyed
0 elite
complex variables
Complex Variables (ME)
13 Qs
85% keyed
0 elite
divergence
Calculus (ME)
13 Qs
77% keyed
0 elite
mean
Probability and Statistics - Normal Distribution
12 Qs
75% keyed
1 elite
curl
Calculus (ME)
12 Qs
83% keyed
0 elite
second order ode
Differential Equations (ME)
11 Qs
55% keyed
0 elite
Thermodynamics
68 concepts · 388 linksenthalpy
First Law
19 Qs
63% keyed
0 elite
steam turbine
First Law
19 Qs
53% keyed
0 elite
second law
Second Law
14 Qs
79% keyed
0 elite
energy balance
First Law
14 Qs
50% keyed
0 elite
heat engine
Second Law
13 Qs
77% keyed
0 elite
efficiency
Power Cycles
12 Qs
83% keyed
0 elite
isothermal process
First Law
11 Qs
91% keyed
0 elite
reversible process
First Law
11 Qs
82% keyed
0 elite
work done
First Law
11 Qs
64% keyed
0 elite
closed system
Second Law
10 Qs
70% keyed
1 elite
dryness fraction
Power Cycles
10 Qs
60% keyed
0 elite
steady flow energy equation
First Law
10 Qs
50% keyed
0 elite
heat pump
Refrigeration
9 Qs
67% keyed
0 elite
impulse turbine
Turbomachinery
9 Qs
67% keyed
0 elite
sfee
First Law
9 Qs
67% keyed
0 elite
first law of thermodynamics
First Law
9 Qs
56% keyed
0 elite
Heat Transfer
53 concepts · 376 linksheat transfer
Convection
67 Qs
79% keyed
3 elite
heat exchanger
Heat Exchangers
39 Qs
54% keyed
0 elite
convection
Convection
19 Qs
95% keyed
2 elite
lmtd
Heat Exchangers
18 Qs
56% keyed
0 elite
nusselt number
Convection
17 Qs
65% keyed
0 elite
counter flow
Heat Exchangers
17 Qs
53% keyed
0 elite
prandtl number
Convection
12 Qs
92% keyed
0 elite
dimensionless numbers
Convection
10 Qs
90% keyed
0 elite
lumped capacitance
Conduction
9 Qs
78% keyed
0 elite
heat capacity rate
Heat Exchangers
9 Qs
44% keyed
0 elite
thermal boundary layer
Convection
8 Qs
88% keyed
0 elite
forced convection
Convection
8 Qs
75% keyed
0 elite
critical radius
Conduction
7 Qs
86% keyed
7 elite
insulation
Conduction
7 Qs
86% keyed
7 elite
temperature profile
Heat Exchangers
7 Qs
86% keyed
1 elite
cylinder
Conduction
6 Qs
83% keyed
6 elite
Mathematics
37 concepts · 331 linkscalculus
Limits
78 Qs
86% keyed
3 elite
initial value problem
Differential Equations
25 Qs
68% keyed
0 elite
eigenvalues
Linear Algebra - Eigenvalues and Eigenvectors
21 Qs
81% keyed
0 elite
algebra
Logarithms
17 Qs
88% keyed
8 elite
analytic function
Complex Analysis - Harmonic Functions
16 Qs
75% keyed
0 elite
limits
Limits
14 Qs
86% keyed
0 elite
GATE
Set Theory - Combinatorics
14 Qs
79% keyed
0 elite
statistics
Statistics - Mode
11 Qs
91% keyed
0 elite
eigenvectors
Linear Algebra - Eigenvalues and Eigenvectors
10 Qs
70% keyed
0 elite
pde
Partial Differential Equations
9 Qs
100% keyed
1 elite
ordinary differential equation
Differential Equations
8 Qs
50% keyed
0 elite
combinatorics
Set Theory - Combinatorics
7 Qs
57% keyed
2 elite
dice
Probability and Statistics
7 Qs
57% keyed
1 elite
double integral
Calculus - Double Integrals
7 Qs
57% keyed
0 elite
complex numbers
Complex Numbers
6 Qs
100% keyed
0 elite
rotation
Calculus - Surface Area of Revolution
6 Qs
100% keyed
0 elite
Fluid Mechanics
39 concepts · 231 linkslaminar flow
Boundary Layer
38 Qs
61% keyed
14 elite
velocity field
Kinematics
30 Qs
77% keyed
0 elite
flat plate
Boundary Layer
20 Qs
80% keyed
2 elite
steady flow
Kinematics
14 Qs
93% keyed
0 elite
fluid kinematics
Kinematics
11 Qs
91% keyed
0 elite
pressure drop
Flow Through Pipes
9 Qs
78% keyed
7 elite
darcy weisbach
Flow Through Pipes
6 Qs
67% keyed
5 elite
2D flow
Kinematics
6 Qs
100% keyed
0 elite
hagen-poiseuille
Flow Through Pipes
5 Qs
40% keyed
5 elite
fluid properties
Fluid Properties
5 Qs
100% keyed
0 elite
hydrostatic stress
Fluid Statics
5 Qs
100% keyed
0 elite
surface tension
Fluid Properties
5 Qs
40% keyed
0 elite
line integral
Kinematics
5 Qs
20% keyed
0 elite
fully developed flow
Flow Through Pipes
4 Qs
75% keyed
2 elite
wall shear stress
Boundary Layer
4 Qs
75% keyed
2 elite
convective acceleration
Kinematics
4 Qs
100% keyed
0 elite
Logical Reasoning
34 concepts · 229 linksaptitude
Time and Work
59 Qs
97% keyed
47 elite
logical reasoning
Time and Work
18 Qs
89% keyed
9 elite
general aptitude
Inference
15 Qs
87% keyed
14 elite
inference
Inference
12 Qs
92% keyed
4 elite
reading comprehension
Inference
10 Qs
90% keyed
5 elite
time
Clocks
9 Qs
78% keyed
2 elite
logic
Statements and Conclusions
7 Qs
100% keyed
1 elite
coin toss
Probability
7 Qs
86% keyed
1 elite
data interpretation
Data Interpretation - Pie Chart
7 Qs
71% keyed
1 elite
analogy
Analogy
6 Qs
67% keyed
3 elite
time and work
Time and Work
5 Qs
100% keyed
3 elite
clocks
Clocks
5 Qs
80% keyed
3 elite
puzzle
Spatial Reasoning - Jigsaw Puzzle
5 Qs
80% keyed
2 elite
combinations
Seating Arrangement / Permutations and Combinations
5 Qs
100% keyed
1 elite
pattern
Letter Series
5 Qs
80% keyed
0 elite
syllogism
Syllogism
4 Qs
100% keyed
2 elite
Industrial Engineering
33 concepts · 223 linksoperations research
Operations Research
34 Qs
82% keyed
0 elite
forecasting
Forecasting
25 Qs
92% keyed
0 elite
eoq
Inventory
21 Qs
57% keyed
0 elite
inventory
Inventory
14 Qs
71% keyed
0 elite
exponential smoothing
Forecasting
13 Qs
85% keyed
0 elite
industrial engineering
Forecasting
11 Qs
91% keyed
0 elite
graphical method
Operations Research
10 Qs
70% keyed
0 elite
inventory control
Inventory
9 Qs
89% keyed
0 elite
production planning
Operations Research
9 Qs
89% keyed
0 elite
M/M/1 queue
Operations Research
8 Qs
75% keyed
0 elite
network diagram
Project Management
5 Qs
80% keyed
0 elite
holding cost
Inventory
5 Qs
60% keyed
0 elite
utilization factor
Operations Research
5 Qs
60% keyed
0 elite
simplex method
Operations Research
5 Qs
40% keyed
0 elite
waiting time
Operations Research
4 Qs
100% keyed
0 elite
M/M/1
Operations Research
4 Qs
75% keyed
0 elite
Machine Design
29 concepts · 134 linkspower transmission
Gears Design
21 Qs
81% keyed
0 elite
spur gear
Gears Design
9 Qs
78% keyed
0 elite
journal bearing
Bearings
8 Qs
88% keyed
0 elite
bearing life
Bearings
7 Qs
86% keyed
0 elite
bearings
Bearings
7 Qs
57% keyed
0 elite
load-life relationship
Bearings
6 Qs
100% keyed
0 elite
tresca theory
Design Fundamentals
5 Qs
100% keyed
0 elite
involute profile
Gears
5 Qs
100% keyed
0 elite
center distance
Gears
5 Qs
80% keyed
0 elite
speed reduction
Gears
5 Qs
80% keyed
0 elite
pressure angle
Gears Design
5 Qs
60% keyed
0 elite
fatigue loading
Design Fundamentals
5 Qs
60% keyed
0 elite
minimum teeth
Gears
4 Qs
75% keyed
0 elite
sommerfeld number
Bearings
4 Qs
75% keyed
0 elite
alternating stress
Design Fundamentals
3 Qs
100% keyed
0 elite
axial load
Bearings
3 Qs
100% keyed
0 elite
Strength of Materials
28 concepts · 121 linksprincipal stress
Mohrs Circle
10 Qs
80% keyed
0 elite
maximum shear stress
Theories of Failure
8 Qs
100% keyed
0 elite
failure theories
Theories of Failure
8 Qs
88% keyed
0 elite
hoop stress
Pressure Vessels
7 Qs
57% keyed
0 elite
thin cylinder
Pressure Vessels
7 Qs
43% keyed
0 elite
critical load
Columns
6 Qs
83% keyed
0 elite
column
Columns
6 Qs
83% keyed
0 elite
pressure vessel
Pressure Vessels
6 Qs
67% keyed
0 elite
free expansion
Stress & Strain
5 Qs
100% keyed
0 elite
euler buckling
Columns
5 Qs
80% keyed
0 elite
percentage change
Beams
4 Qs
100% keyed
0 elite
combined loading
Theories of Failure
4 Qs
75% keyed
0 elite
longitudinal stress
Pressure Vessels
4 Qs
50% keyed
0 elite
elastic constants
Stress & Strain
4 Qs
25% keyed
0 elite
circular cross-section
Beams
3 Qs
100% keyed
0 elite
hooke's law
Stress & Strain
3 Qs
100% keyed
0 elite
General Aptitude
17 concepts · 110 linksvocabulary
Verbal Ability - Sentence Completion
44 Qs
98% keyed
9 elite
sentence completion
Verbal Ability - Sentence Completion
15 Qs
100% keyed
2 elite
verbal ability
Verbal Ability
9 Qs
100% keyed
8 elite
antonyms
Verbal Ability - Antonyms
6 Qs
100% keyed
0 elite
synonyms
Verbal Ability - Synonyms
6 Qs
100% keyed
0 elite
verbal-aptitude
Verbal Aptitude
5 Qs
100% keyed
5 elite
mensuration
Calculus (ME)
3 Qs
100% keyed
3 elite
prime numbers
Numerical Ability - Odd One Out
3 Qs
67% keyed
2 elite
number series
Numerical Ability - Odd One Out
3 Qs
33% keyed
1 elite
coding-decoding
2 Qs
100% keyed
2 elite
verbal
2 Qs
100% keyed
2 elite
averages
Quantitative Aptitude
2 Qs
100% keyed
2 elite
minimum value
Calculus (ME)
2 Qs
100% keyed
1 elite
pipes and cisterns
Quantitative Aptitude
2 Qs
100% keyed
1 elite
verbal reasoning
Verbal Ability - Analogy
2 Qs
50% keyed
1 elite
odd one out
Numerical Ability - Odd One Out
2 Qs
50% keyed
1 elite
Theory of Machines
22 concepts · 87 linksflywheel
Power Transmission
13 Qs
77% keyed
0 elite
degrees of freedom
Mechanisms
7 Qs
86% keyed
0 elite
worm gear
Gears
6 Qs
83% keyed
0 elite
match the following
Gears
6 Qs
33% keyed
0 elite
viscous damping
Vibrations
5 Qs
80% keyed
1 elite
mechanisms
Mechanisms
5 Qs
80% keyed
0 elite
damping coefficient
Vibrations
4 Qs
75% keyed
1 elite
damped vibration
Vibrations
4 Qs
75% keyed
0 elite
fluctuation of energy
Power Transmission
4 Qs
75% keyed
0 elite
critical speed
Vibrations
3 Qs
100% keyed
0 elite
damping factor
Vibrations
3 Qs
100% keyed
0 elite
fluctuation of speed
Power Transmission
3 Qs
100% keyed
0 elite
four-bar linkage
Mechanisms
3 Qs
100% keyed
0 elite
equivalent stiffness
Vibrations
3 Qs
67% keyed
0 elite
speed fluctuation
Power Transmission
3 Qs
67% keyed
0 elite
slider crank
Mechanisms
3 Qs
33% keyed
0 elite
English
8 concepts · 67 linksenglish
Vocabulary - Contextual usage
23 Qs
91% keyed
14 elite
grammar
Grammar - Conditional Sentences / Tag Questions
19 Qs
89% keyed
8 elite
fill in the blanks
Vocabulary - Homophones
7 Qs
86% keyed
2 elite
english grammar
Grammar - Comparatives/Quantifiers
5 Qs
100% keyed
1 elite
homophones
Vocabulary - Homophones
4 Qs
100% keyed
3 elite
sequence
Sentence Rearrangement / Paragraph Coherence
3 Qs
100% keyed
1 elite
context
Vocabulary - Contextual usage
3 Qs
100% keyed
0 elite
fill in the blank
Grammar - Verb Tenses/Modals
3 Qs
100% keyed
0 elite
Math Reasoning
7 concepts · 31 linksarea
Geometry - Area
11 Qs
82% keyed
2 elite
integers
Number Properties - Integers
8 Qs
100% keyed
4 elite
without replacement
Probability
4 Qs
100% keyed
0 elite
fiscal deficit
Percentage
2 Qs
100% keyed
1 elite
gdp
Percentage
2 Qs
100% keyed
1 elite
arithmetic
Arithmetic - Subtraction
2 Qs
100% keyed
0 elite
coordinate geometry
Coordinate Geometry - Area
2 Qs
100% keyed
0 elite
Physics
7 concepts · 30 linkskinetic energy
Mechanics - Rotational Motion / Kinematics
9 Qs
89% keyed
0 elite
distance
Kinematics - Motion in a Straight Line
5 Qs
80% keyed
0 elite
collision
Mechanics - Kinematics and Collisions
4 Qs
75% keyed
1 elite
polar coordinates
Mechanics - Rotational Motion / Kinematics
4 Qs
100% keyed
0 elite
stefan-boltzmann law
Heat Transfer - Blackbody Radiation
3 Qs
100% keyed
0 elite
gravity
Mechanics - Kinematics and Collisions
3 Qs
100% keyed
0 elite
emissive power
Heat Transfer - Blackbody Radiation
2 Qs
100% keyed
0 elite