BTSC Work Inspector Syllabus 2026: Trade-Wise Topics, 100-Marks Exam Pattern & Preparation Strategy

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• Updated February 27, 2026 11:14 AM
• by Alaguvelan M
• The BTSC Work Inspector Syllabus for the 2026 recruitment (Mechanical) is now officially available, focusing on ITI-level technical trades combined with Matric-level Mathematics and General Knowledge.
• As per the latest update from the Bihar Technical Service Commission (BTSC), the syllabus for Work Inspector (Mechanical) was published on 26 February 2026.
• The exam is a 100-mark Computer-Based Test (CBT) with objective questions. Candidates can download the official BTSC Work Inspector Syllabus PDF directly from the BTSC website

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BTSC Work Inspector Syllabus

• The BTSC Work Inspector Syllabus includes four ITI trades (Machinist, Fitter, Wireman, Electrician) at 15 marks each, Mathematics at Matric level (20 marks), and General Knowledge (20 marks), totaling 100 marks in a single CBT paper. This tests workshop skills for public works supervision along with basic aptitude.

BTSC Work Inspector Syllabus 2026 Overview

• The exam targets candidates with ITI qualifications in relevant trades, assessing practical technical knowledge alongside foundational academics.

BTSC Work Inspector Exam Pattern

• The exam follows a clear marks distribution aligned with official patterns for this recruitment.

Machinist – Detailed Syllabus (15 Marks)

• Fitting operations: marking, sawing, filing, chiselling, scraping, drilling
• Measuring instruments: steel rule, vernier calliper, micrometre, height gauge, dial gauge
• Limits, fits and tolerances; interchangeability and surface finish
• Lathe: components, work holding devices, cutting tools, speeds and feeds, turning, facing, parting, threading, knurling, taper turning
• Milling: types of milling machines, cutters, up and down milling, indexing, gear cutting fundamentals
• Grinding: cylindrical, surface, tool and cutter grinding; wheel selection, balancing, dressing
• CNC basics: principles of CNC turning and machining centres, coordinate systems, basic G and M codes
• VMC fundamentals, jigs and fixtures, process planning
• Heat treatment of metals: annealing, normalising, hardening, tempering
• Maintenance, lubrication, common machine faults and safety
• Basic sensors used in machine tools (limit switches, proximity sensors, encoders)

Fitter – Detailed Syllabus (15 Marks)

• Hand tools: hammers, files, chisels, punches, hacksaws, spanners, screwdrivers
• Bench work: marking, measuring, cutting, chipping, filing, scraping, fitting of mating parts
• Sheet metal operations: shearing, bending, folding, rolling, seams and joints
• Welding fundamentals: gas welding, arc welding basics, soldering and brazing techniques
• Riveting and fasteners: types of rivets, bolts, nuts, screws, lock nuts, washers
• Drilling operations: drilling, reaming, counterboring, countersinking, tapping, thread cutting
• Limits, fits, tolerances, surface finish, use of gauges (plug, snap, ring gauges)
• Lathe basics for fitters: centre turning, boring, simple threading
• Power transmission: shafts, keys, couplings, belts, chains, gears, bearings, and lubrication
• Basic pneumatics and hydraulics: symbols, components, simple circuits and applications
• Preventive maintenance, fault diagnosis and safety precautions in the workshop

Wireman – Detailed Syllabus (15 Marks)

• Basic electrical concepts: charge, current, voltage, resistance, power and energy
• Ohm’s law, series and parallel circuits, Kirchhoff’s laws
• AC fundamentals: RMS and average values, power factor, single-phase and three-phase concepts
• Types of wiring: CTS, batten, conduit, casing-capping, industrial wiring, panel wiring
• Earthing: necessity, types (plate, pipe, strip), earth resistance testing
• Electrical machines basics: transformers, motors in domestic/industrial use
• Domestic installation: meter board, distribution board, sub-circuits, load calculation
• Testing and fault finding: continuity test, insulation resistance, polarity test
• Solar power basics, batteries, inverters and UPS systems
• LED lighting, rectifiers, SMPS basics, simple power supplies
• Underground cable laying, jointing, fault location methods

Electrician – Detailed Syllabus (15 Marks)

• Electrical fundamentals: units, measurements, instruments (ammeter, voltmeter, wattmeter, energy meter)
• DC machines: construction, working, characteristics, applications of DC motors and generators
• Transformers: single-phase, three-phase, efficiency, regulation, basic tests
• AC machines: induction motors, synchronous machines fundamentals and applications
• Power electronics: rectifiers, choppers, inverters, basic drives and their control
• Protection devices: fuses, MCB, MCCB, relays, contactors, overload protection
• Wiring systems: domestic, commercial and industrial wiring standards, cable sizing, demand factor
• Earthing and lightning protection, safety rules as per IE and NEC basics
• Illumination: laws of illumination, types of lamps, LED technology, lighting schemes
• Transmission and distribution basics: substation components, feeders, safety in T&D work

Q1. What is the BTSC Work Inspector exam pattern?

• It's a 100-mark CBT with 100 MCQs: 15 marks each for Machinist, Fitter, Wireman, Electrician; 20 marks each for Mathematics and General Knowledge. Duration is typically 2 hours.

Q3. Which subjects are included in BTSC Work Inspector syllabus?

• Four ITI trades (Machinist, Fitter, Wireman, Electrician), Mathematics (Matric level), and General Knowledge (with Bihar focus).

Q4. Is Mathematics in BTSC Work Inspector syllabus at Matric level?

• Yes, it covers Class 9-10 level topics like number systems, algebra, geometry, mensuration, and basic statistics.