The Gujarat Subordinate Service Selection Board (GSSSB) conducts the Assistant Engineer (Mechanical) recruitment examination through a single-stage competitive examination. The examination consists of Part-A (General Aptitude) and Part-B (Mechanical & Automobile Engineering) carrying a total of 210 marks. Candidates must secure a minimum of 40% marks separately in both sections.

GSSSB Assistant Engineer Mechanical Exam Pattern 2025

Subject	Marks
Reasoning & Data Interpretation	30
Quantitative Aptitude	30
Constitution of India	10
Current Affairs	10
Gujarati & English Comprehension	10
Mechanical & Automobile Engineering	120
Total	210

Exam Duration: 180 Minutes (3 Hours)
Negative Marking: 0.25 Marks
Minimum Qualifying Marks: 40% in Part-A and Part-B Separately

Reasoning & Data Interpretation Syllabus

Reasoning & Data Interpretation Topics
Analogy
Classification
Series Completion
Coding-Decoding
Blood Relations
Direction Sense Test
Ranking & Ordering
Alphabet Test
Puzzle Test
Seating Arrangement
Syllogism
Statement & Conclusion
Statement & Assumptions
Cause & Effect
Decision Making
Data Sufficiency
Non-Verbal Reasoning
Mirror & Water Images
Figure Classification
Embedded Figures
Tables
Pie Charts
Line Graphs
Bar Graphs
Caselet Data Interpretation

Quantitative Aptitude Syllabus

Quantitative Aptitude Topics
Number System
Simplification
HCF & LCM
Ratio & Proportion
Percentage
Profit & Loss
Average
Partnership
Time & Work
Pipes & Cisterns
Time & Distance
Boats & Streams
Simple Interest
Compound Interest
Algebra
Linear Equations
Quadratic Equations
Geometry
Mensuration
Trigonometry
Statistics
Probability
Data Interpretation

Constitution of India Syllabus

Constitution of India Topics
Historical Background
Constituent Assembly
Preamble
Citizenship
Fundamental Rights
Fundamental Duties
Directive Principles of State Policy
President
Vice President
Prime Minister
Parliament
Supreme Court
High Court
Governor
Chief Minister
Panchayati Raj
Municipal Administration
Election Commission
Constitutional Bodies
Emergency Provisions
Constitutional Amendments

Current Affairs Syllabus

Current Affairs Topics
National Current Affairs
International Current Affairs
Gujarat Current Affairs
Government Schemes
Budget & Economic Survey
Banking & Finance
Sports
Awards & Honours
Books & Authors
Important Days
Science & Technology
Defence
Environment
Appointments
Reports & Indexes
Summits & Conferences

Gujarati & English Comprehension Syllabus

Gujarati Topics	English Topics
Grammar	Grammar
Synonyms	Synonyms
Antonyms	Antonyms
Idioms & Proverbs	Idioms & Phrases
Sentence Correction	Error Detection
Vocabulary	Vocabulary
Reading Comprehension	Reading Comprehension
Fill in the Blanks	Fill in the Blanks
One Word Substitution	One Word Substitution

Engineering Mechanics Syllabus

Engineering Mechanics Topics
Force System
Equilibrium
Friction
Centroid
Centre of Gravity
Moment of Inertia
Trusses
Virtual Work
Kinematics
Kinetics

Strength of Materials Syllabus

Strength of Materials Topics
Stress & Strain
Elastic Constants
Shear Force
Bending Moment
Bending Stress
Torsion
Deflection of Beams
Columns & Struts
Principal Stresses

Theory of Machines Syllabus

Theory of Machines Topics
Kinematic Pairs
Mechanisms
Velocity Analysis
Acceleration Analysis
Gear Trains
Governors
Flywheel
Balancing
Cam & Followers
Belt Drives

Machine Design Syllabus

Machine Design Topics
Design of Shafts
Keys & Couplings
Springs
Bearings
Riveted Joints
Welded Joints
Power Screws
Brakes
Clutches

Fluid Mechanics & Hydraulic Machines

Fluid Mechanics Topics
Fluid Properties
Fluid Statics
Fluid Kinematics
Fluid Dynamics
Bernoulli’s Equation
Flow Through Pipes
Hydraulic Turbines
Centrifugal Pumps
Reciprocating Pumps

Thermodynamics Syllabus

Thermodynamics Topics
Zeroth Law
First Law
Second Law
Entropy
Gas Power Cycles
Air Standard Cycles
Steam Properties
Boilers
Nozzles
Steam Turbines

Heat Transfer Syllabus

Heat Transfer Topics
Conduction
Convection
Radiation
Heat Exchangers
Thermal Insulation
Extended Surfaces

Refrigeration & Air Conditioning

RAC Topics
Refrigeration Cycles
Vapour Compression System
Vapour Absorption System
Psychrometry
Air Conditioning Systems
Refrigerants

Manufacturing & Production Engineering

Manufacturing Topics
Casting
Welding
Forging
Machining
Metal Cutting
CNC Machines
Jigs & Fixtures
Tool Engineering
Production Planning & Control

Industrial Engineering

Industrial Engineering Topics
Work Study
Method Study
Time Study
Inventory Control
Operations Research
Project Management
Quality Management

Engineering Materials & Metrology

Engineering Materials Topics
Ferrous Materials
Non-Ferrous Materials
Heat Treatment
Composite Materials
Measurement Systems
Gauges
Limits & Fits
Surface Finish

Power Plant Engineering

Power Plant Engineering Topics
Steam Power Plant
Diesel Power Plant
Gas Turbine Power Plant
Nuclear Power Plant
Renewable Energy Sources

Automobile Engineering Syllabus

Automobile Engineering Topics
SI & CI Engines
Fuel Supply System
Lubrication System
Cooling System
Transmission System
Clutch
Gear Box
Differential
Steering System
Suspension System
Braking System
Automobile Electrical System
Battery & Ignition System
Emission Control
Hybrid Vehicles
Electric Vehicles
Vehicle Maintenance

FAQs

Q1. What is the total marks of GSSSB Assistant Engineer Mechanical Exam?

The examination carries a total of 210 marks.

Q2. Is there any negative marking?

Yes, 0.25 marks are deducted for every wrong answer.

Q3. What is the duration of the exam?

The duration of the examination is 180 minutes (3 hours).

Q4. What are the minimum qualifying marks?

Candidates must secure at least 40% marks separately in Part-A and Part-B.

Q5. How many marks are allotted to Mechanical & Automobile Engineering?

Mechanical & Automobile Engineering carries 120 marks.

Q6. What is the mode of examination?

The examination is conducted through CBRT or OMR-based mode.

Q7. Are questions objective type?

Yes, all questions are objective-type multiple-choice questions.

Q8. Which section has the highest weightage?

Part-B (Mechanical & Automobile Engineering) has the highest weightage with 120 marks.