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EngineeringHulk — Free Engineering Education for Every Student
EngineeringHulk Free
Mechanical Civil Electrical CS & IT AI & ML Resources GATE Prep →
India’s Engineering Education Hub

Engineering concepts,
explained clearly.

2,000+ original pages covering Mechanical, Civil, Electrical, Computer Science, and AI/ML — written for students. Formulas, concept explainers, how-to guides, and exam prep, all in one place.

Browse Topics → 📄 Formula Sheets
2,000+
Topic pages
5
Engineering branches
12
Content types
100%
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Mechanical
400+ pages
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Civil
350+ pages
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Electrical
350+ pages
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CS & IT
400+ pages
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AI & Machine Learning
ML, Deep Learning, NLP, Python tools
300+ pages
Browse by Branch

Every branch.
Every topic.

Pick your branch and explore deeply written content — from core concepts to advanced exam-level topics.

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Mechanical Engineering
Thermodynamics, fluid mechanics, strength of materials, manufacturing processes, theory of machines, and machine design — from fundamentals to GATE level.
Thermodynamics Fluid Mechanics SOM Manufacturing TOM
400+ pages →
🏗️
Civil Engineering
Structural analysis, RCC design, geotechnical engineering, hydraulics, transportation, and environmental engineering covered in full depth.
Structural Analysis RCC Design Geotechnical Hydraulics
350+ pages →
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Electrical Engineering
Circuit theory, electrical machines, power systems, control systems, analog electronics, and digital circuits — all concepts explained clearly.
Circuit Theory Machines Power Systems Control Systems
350+ pages →
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Computer Science & IT
DSA, operating systems, computer networks, DBMS, theory of computation, and software engineering — written for both exams and industry jobs.
DSA Operating Systems Networks DBMS
400+ pages →
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Artificial Intelligence & ML
Machine learning algorithms, deep learning, NLP, Python tools, Kaggle guides, and practical ML project walkthroughs for beginners and advanced learners.
ML Algorithms Deep Learning NLP Python
300+ pages →
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Resources & Exam Prep
Formula sheets, GATE preparation guides, placement prep, career guides, engineering mathematics — covering all branches in one place.
Formula Sheets GATE 2026 ESE / IES Placements
200+ pages →
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Preparing for a competitive exam? We have dedicated guides for every major engineering exam in India.
GATE Mechanical GATE Civil GATE Electrical GATE CSE ESE / IES Campus Placements
What you’ll find

12 types of content.
One trusted source.

Every page is written for a specific purpose, so you always know what you’re getting before you click.

📖
Concept Explainers
Deep, plain-English breakdowns of every core topic — with analogies, diagrams, and real examples to make concepts stick.
📐
Formula Reference Pages
Every formula with all variables defined, SI units, derivation summary, and a fully worked example on a single page.
🔧
How-To Guides
Step-by-step walkthroughs for solving problems — bending moment diagrams, circuit analysis, SQL queries, and more.
⚖️
Comparison Pages
Side-by-side breakdowns for paired topics — TCP vs UDP, Otto vs Diesel Cycle, RCC vs Steel — so you never confuse them again.
🧮
Worked Problem Sets
Fully solved numerical problems with given data, step-by-step solution process, and final answer — exactly what exams expect.
📋
Formula Sheets
One-page formula references for every subject, organized by topic — ideal for last-minute revision before exams.
🎯
Exam Prep Guides
Complete guides with syllabus, topic weightage, recommended books, study plan, and strategy for GATE, ESE, and placements.
🗂️
Definition Pages
Quick, precise definitions with properties, types, and real-world applications — optimized for fast lookup when you need an answer now.
Popular Right Now

Most searched topics.

The concepts students look up most — written with the depth they deserve.

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Mechanical
Carnot Cycle — Efficiency Formula & PV Diagram
The Carnot cycle defines the maximum possible efficiency of any heat engine. Learn the full derivation, PV diagram, and why no real engine can match it.
Concept + Formula·~1,400 words
Electrical
Thevenin’s Theorem — Step-by-Step with Examples
Simplify any complex linear circuit into one voltage source and one resistance. Complete walkthrough with two fully solved circuit examples.
How-To Guide·~1,600 words
CS & IT
Big O Notation — Time Complexity Made Simple
Understand how algorithms scale. O(1), O(n), O(log n), O(n²) explained with real examples and a full complexity comparison chart.
Concept Explainer·~1,200 words
AI & ML
Bias-Variance Tradeoff — The Core ML Concept
Every ML model faces this challenge. Understand what bias and variance mean, how they affect model performance, and how to find the right balance.
Concept Explainer·~1,300 words
Civil
Types of Beams in Civil Engineering — Full Guide
Simply supported, cantilever, fixed, propped, continuous beams — all types explained with support conditions, reactions, and typical applications.
Concept Explainer·~1,100 words
Engineering Math
Laplace Transform — Table, Formula & Applications
The Laplace transform converts differential equations into algebra. Full transform table, properties, inverse transforms, and worked examples for engineers.
Formula Reference·~1,500 words
Formula Reference

Every formula.
Every branch.

Each formula page includes the equation, all variables clearly defined, derivation, SI units, and a fully solved example. No textbook hunting needed.

→ Mechanical Engineering Formula Sheet → Civil Engineering Formula Sheet → Electrical Engineering Formula Sheet → CS — Algorithms & Complexity Cheatsheet → AI/ML — Key Equations & Metrics Reference → Engineering Mathematics — All Transforms
formula-reference.txt
Bernoulli’s Equation P + ½ρv² + ρgh = const ME
Ohm’s Law V = I × R EE
Carnot Efficiency η = 1 − T_L / T_H ME
Binary Search T(n) = O(log n) CS
Euler Buckling Load P_cr = π²EI / (KL)² Civil
Gradient Descent θ := θ − α × ∇J(θ) ML
Reynolds Number Re = ρvD / μ ME
Bending Stress σ = M × y / I Civil/ME
How Content is Organized

Built for the way
students actually study.

Every topic follows a four-level structure — from branch overview down to deep-dive sub-topics. You always know where you are and what to read next.

Level 01
Branch Hub
Start at your branch page — a complete overview of all subjects, recommended study order, and direct links to every topic area.
Level 02
Subject Cluster
Each subject like Thermodynamics or DSA has a cluster page listing all topics with brief descriptions and difficulty levels.
Level 03
Topic Page
The main content — full concept explainer, formula, worked examples, common mistakes, FAQ section, and links to related topics.
Level 04
Deep-Dive Sub-Topic
For complex topics, dedicated sub-pages go deeper. Example: Carnot Cycle lives under Thermodynamics → Second Law of Thermodynamics.
Find Anything

Search 2,000+ engineering topics.

Type a concept, formula, theorem, or topic name — and find a complete, well-written page on it.

What is entropy? TCP vs UDP Stress-Strain curve Linear regression formula Types of beams Kirchhoff’s laws GATE 2026 prep Sorting algorithms
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100% Original Content
Written from first principles, never copy-pasted
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Exam-Ready Depth
GATE, ESE, and placement level coverage
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Regularly Updated
Syllabus changes reflected immediately
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Free Forever
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EngineeringHulk

Free, original, in-depth engineering education for students across India and the world. No paywall. No shortcuts. Just clear explanations of every concept you need to succeed.

🇮🇳 Made in India  ·  Serving students globally
Mechanical
Thermodynamics Fluid Mechanics Strength of Materials Manufacturing Theory of Machines All ME Topics →
Civil & Electrical
Structural Analysis RCC Design Geotechnical Circuit Theory Electrical Machines Control Systems
CS & AI/ML
Data Structures & Algorithms Computer Networks Operating Systems DBMS Machine Learning Deep Learning
Resources
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