Are you preparing for the upcoming Assistant Engineer Mechanical 2025 examination under the Water Resources Department conducted by the Assam Public Service Commission (APSC)?
If yes, you are just in the right place!
Stages of APSC Assistant Engineer Examination
The APSC Assistant Engineer Examination comprise 2 stages. The first is an OMR-based, multiple-choice question (MCQ) test, which is a preliminary test to assess candidates’ technical knowledge and general aptitude. This stage is again divided into two papers:
| Paper | Marks | Duration |
|---|---|---|
| Paper 1: Technical | 100 | 2 hours |
| Paper 2: General Studies | 100 | 2 hours |
This MCQ based test examines both your Technical knowledge and your General Knowledge and Language skills.
The syllabus for the APSC AE WRD Mechanical Engineering of the MCQ based test is as follows:
Paper 1: Technical: Mechanical Engineering
| Sl No | Subject | Topics to Cover |
|---|---|---|
| 1 | Engineering Mechanics | Equilibrium of rigid bodies, FBDs, force systems Structures: method of joints/sections Friction (dry, wedge, ladder) Centre of Gravity & Moment of Inertia Lifting Machines, Virtual Work Impulse, momentum, work and energy |
| 2 | Electrical Technology | DC machines (generator, motor, losses, efficiency, characteristics) Transformers (ideal theory, phasor diagram, tests, regulation, autotransformer) Induction motors (3-phase, 1-phase, torque, starting methods) Synchronous machines (alternator, motor, excitation, application) Measuring instruments (wattmeter, energy meter) |
| 3 | Thermodynamics | System, properties, processes, laws of thermodynamics Internal energy, entropy, Carnot cycle Steam properties, Rankine cycle, use of Mollier charts Air standard cycles (Otto, Diesel) SI/CI engines, fuel combustion, calorimetry, Orsat apparatus |
| 4 | Theory of Machines | Simple mechanisms (crank, four-bar) Governors (Watt, Porter, Hartnell, stability) Cams and followers, displacement diagrams Friction: clutches, brakes, belts, dynamometers Flywheels & turning moment diagrams Gears & gear trains (simple, compound, epicyclic) |
| 5 | Fluid Mechanics | Fluid properties, pressure measurement Fluid statics (forces on submerged bodies, buoyancy) Kinematics (streamlines, pathlines, vortex) Dynamics: Bernoulli, Euler, momentum equation Flow measurement: venturimeter, orificemeter, Pitot tube Dimensional analysis, Reynolds number, pipe flow losses |
| 6 | Mechanics of Materials | Complex stress-strain, Mohr’s circle Principal stress/strain, strain rosette Combined stresses (bending + torsion) Curved beams, springs |
| 7 | Heat Transfer | Conduction (1D, unsteady, fins), boundary conditions Radiation (laws, shape factors, grey bodies) Convection & radiation combined Diffusion (Fick’s Law, mass transfer, molecular diffusion) |
| 8 | Industrial Engineering & Management | Organization structure, plant layout Network analysis (CPM, PERT, crashing) Work study (motion study, therbligs, stopwatch method) Product design & value analysis Production planning, inventory control (EOQ, ABC) Maintenance (TPM), Quality control, TQM |
| 9 | Air Conditioning | Psychrometry, charts, processes (humidification, mixing) Comfort air conditioning (comfort indices, load analysis) Duct design, air distribution A/C systems (residential, commercial, industrial) Equipment (fans, filters, cooling towers, dehumidifiers) Controls (thermostats, dampers, pneumatic systems) |
Paper 2: General Studies & General English
| Sl No. | Topics |
|---|---|
| 1 | Current Affairs (India & Assam) |
| 2 | Indian History & Freedom Movement |
| 3 | Assam History |
| 4 | Geography (India & Assam) |
| 5 | Indian Polity & Constitution |
| 6 | Sports, Books, Authors, Important Personalities of Assam |
| 7 | Economy (India & Assam) |
| 8 | Assam Environment |
| 9 | General Mental Ability |
| 10 | Literature, Culture, and Festivals of Assam & North East |
| 11 | English Grammar |
A proper Study Plan, a Strategic Approach, Proper Practice and Smart Work and Study are the key points you should keep in mind while preparing for the APSC Assistant Engineer Examination.
Salary of an Assistant Engineer in Assam?
The Pay scale of an Assistant Engineer falls under Pay Band 4, that is, Rs. 30,000.00-Rs. 1,10,000.00. And the Grade Pay is Rs. 12,700. So, your Basic Pay becomes Rs. 30,000.00+Rs.12,700.00 = Rs. 42,700.00. All other perks and allowances are calculated on this.
| Pay | Amount |
|---|---|
| Pay Band 4 | 30,000-1,10,00.00 |
| Grade Pay | 12,700.00 |
| Basic Pay | 30,000.00+12,700.00 = 42,700.00 |
| Dearness Allowance(As on June 2025, 55% of Basic Pay) | 23,485.00 |
| House Rent Allowances(Say 8%, depends on location of posting) | 3,416.00 |
| Medical Allowance | 600.00 |
| Gross Salary | 70,201.00 |
| Deductions | |
| NPS | |
| Professional Tax | |
| Group Insurance Scheme(GIS) | |
| MMLSAY(optional, 500.00 for Grade 1 Officers) | |
| Net Salary | Rs. 62,000.00 (approx) |
The in-hand salary of an Assistant Engineer in Assam at joining is around Rs. 62,000.00.
Is APSC Assistant Engineer Mechanical in WRD worth it?
The APSC Assistant Engineer (Mechanical) Screening Test 2025 is your gateway to a fulfilling career in the Water Resources Department. By mastering the syllabus for Mechanical Engineering and General Studies & General English, and following a disciplined preparation strategy, you can boost your chances of success. Start early, stay consistent, and approach the exam with confidence.
Working as an Assistant Engineer (Mechanical) in the Water Resources Department offers a unique opportunity to contribute to critical infrastructure projects like flood control, and water management in Assam. This role combines technical expertise with societal impact, making it both challenging and rewarding. Plus, a government job with APSC comes with job security, benefits, and opportunities for growth, and the Perks of a Grade 1 Gazetted Officer.
Best of luck, future engineers!
