BTSC JE Syllabus 2026; Bihar Technical Service Commission (BTSC) is responsible for conducting the Bihar Junior Engineer (JE) Examination to recruit eligible candidates for JE posts in Civil, Mechanical, and Electrical disciplines. To prepare effectively for the BTSC JE exam, it is important for candidates to thoroughly review the subject-wise syllabus before starting their preparation. Check the detailed BTSC JE Syllabus and Exam Pattern 2026 from the article.
BTSC JE Syllabus and Exam Pattern 2026
Understanding the BTSC JE Syllabus 2026 helps aspirants strategise their preparation effectively. Check the detailed syllabus, exam pattern, topics asked in the exam, marking scheme and other details from the article.
Bihar BTSC JE Syllabus 2026 Summary
| Commission | Bihar Technical Service Commission (BTSC) |
| Post | Junior Engineer |
| Disciplines | Civil/Mechanical/Electrical |
| Mode of Exam | Computer-Based Test (CBT) / Online |
| No. of Questions | 100 |
| Total marks | 100 |
| Duration | 2 hours |
| Negative Marking | 1/4 |
| Selection Process | Online Exam- Interview- Document Verification |
Bihar BTSC JE Selection Process 2026
The selection for Junior Engineers in Civil/Mechanical/Electrical disciplines will be based on two stages:
- Written Exam (75 marks): All questions in the written competitive examination will be objective type multiple-choice questions. To be called for the next stage, candidates must clear the written test.
- Work Experience (25 marks): For claiming preference based on contractual service as a Junior Engineer or equivalent post, work experience will be considered valid if candidates work under the Government of Bihar/Central Government or any undertaking, corporation, body, authority, or autonomous body.
Bihar BTSC JE Exam Pattern 2026
The exam pattern for the BTSC Junior Engineer post is as follows:
- There are 100 questions asked from the subject disciplines
- The exam will be conducted in computer based test
- +1 mark for each correct answer.
- -0.25 marks for each wrong answer.
- The duration of the exam is 2 hours
- The BTSC JE syllabus is based on the updated curriculum for a 3-year Diploma in Civil/Mechanical/Electrical Engineering prescribed by AICTE, New Delhi.
| Sections | Questions | Marks | Duration |
| Domain Knowledge (Civil/Mechanical/Electrical) | 100 | 100 | 2 hours |
BTSC Junior Engineer Qualifying Marks
As mentioned in the BTSC JE Notification, the minimum qualifying marks for the exam is as follows-
- GEN- 40%
- SC/ST- 36.5%
- OBC- 34%
- SC/ST, women, and PWD candidates- 32%
Bihar BTSC JE Syllabus 2026
The topics to be covered from Domain Knowledge have been discussed below. Candidates planning to prepare for the BTSC JE Exam must go through these topics and start their preparation.
BTSC JE Syllabus 2025
As mentioned above, the BTSC JE exam syllabus consists of 2 subjects – General Studies and Engineering-related subjects. For the Engineering portion, questions from the Diploma-level of the trade will be asked. Candidates must study the entire syllabus for the Junior Engineer exam for effective preparation. Below is a complete subject-wise BTSC JE syllabus tabulated for your easy reference –
| Subject | Topics |
| General Studies | Current Affairs (National & International) This section covers current events of national and international importance, including political developments, government schemes, international relations, awards, summits, appointments, and important reports relevant to India and the world. Indian History Indian History includes the study of ancient, medieval, and modern history of India. It covers important events, movements, personalities, dynasties, freedom struggle, and socio-economic developments that shaped Indian civilization. Indian Geography Indian Geography deals with the physical, political, and economic geography of India. It includes landforms, climate, rivers, soil types, natural resources, agriculture, industries, and population distribution. Indian Polity Indian Polity covers the Constitution of India, its features, preamble, fundamental rights and duties, directive principles of state policy, parliamentary system, judiciary, center–state relations, and important constitutional bodies. Science and Technology This section focuses on basic concepts of science and recent developments in science and technology. It includes topics related to space, defence, information technology, biotechnology, health, and everyday applications of science. Static General Knowledge Static GK includes important facts that do not change frequently, such as national symbols, books and authors, important days, awards, capitals, currencies, and major organizations. Sports The Sports section covers national and international sports events, tournaments, cups and trophies, sports personalities, records, and major achievements in different sports. Economic Scene Economic Scene includes topics related to the Indian economy, such as budget, economic policies, banking and finance, inflation, GDP, poverty, unemployment, government initiatives, and recent economic developments. |
| Civil and Structural Engineering | Building Materials This section covers the physical and chemical properties of construction materials, their classification, and standard tests used to determine quality and suitability. It also includes the uses and manufacturing or quarrying processes of various materials. Candidates must study asbestos products, timber and wood-based products, laminates, paints, and varnishes, along with their properties, applications, and advantages in construction works. Estimating, Costing and Valuation This subject focuses on estimation techniques and the glossary of technical terms commonly used in civil engineering works. It includes analysis of rates and detailed study of items of work such as earthwork, brick work (both modular and traditional bricks), RCC work, shuttering, timber work, painting, flooring, plastering, water tanks, and bar bending schedules. The valuation part covers value and cost concepts, scrap value, salvage value, assessed value, sinking fund, depreciation, obsolescence, and different methods of valuation. Surveying Surveying includes the principles of surveying, measurement of distances, and chain surveying. It also covers the working of the prismatic compass, local attraction, and plane table surveying. Other important topics are adjustment of theodolite, leveling, and definitions of leveling terms. Candidates must also study contouring, curvature and refraction corrections, temporary and permanent adjustments of dumpy level, tachometric survey, and advanced surveying equipment. Soil Mechanics Soil Mechanics deals with the origin of soil, phase diagram, and important definitions such as void ratio. It includes the density index and interrelationship of soil parameters, grain size distribution curves and their uses, and index properties of soils. Key topics include Atterberg’s limits, ISI soil classification, plasticity chart, permeability of soil, triaxial test, soil compaction, laboratory compaction test, maximum dry density, optimum moisture content, bearing capacity of soils, and standard penetration test (SPT). Hydraulics Hydraulics covers properties of fluids, hydrostatics, and measurement of flow. It includes Bernoulli’s theorem and its applications, flow through pipes, and flow in open channels. The subject also deals with weirs, flumes, spillways, pumps, and turbines. Irrigation Engineering This section includes the definition, necessity, and benefits of irrigation, along with ill effects of irrigation. It covers types and methods of irrigation and hydrology, including measurement of rainfall. Important topics are water requirement of crops, duty, delta, base period, Kharif and Rabi crops, command area, time factor, crop ratio, overlap allowance, and irrigation efficiencies. It also includes types of canals, weirs and barrages, failure of weirs and permeable foundations, slit and scour, Kennedy’s theory of critical velocity, Lacey’s theory of uniform flow, floods and flood control, water logging and preventive measures, land reclamation, soil fertility factors, and major irrigation projects in India. Transportation Engineering Transportation Engineering covers highway engineering, including cross-sectional elements, geometric design, and types of pavements. It includes pavement materials such as aggregates and bitumen, and design of flexible and rigid pavements, including WBM, WMM, and gravel roads. Other topics include bituminous construction, rigid pavement joints, railway engineering, components of permanent way such as sleepers, ballast, fixtures, and fastenings, and track geometry. Traffic engineering includes traffic surveys, speed–flow–density relationships, intersections and interchanges, traffic signals, traffic operation, traffic signs and road markings, and road safety. Environmental Engineering Environmental Engineering includes quality of water, sources of water supply, water purification, and distribution systems. It covers the need for sanitation, sewerage systems, circular and oval sewers, sewer appurtenances, and sewage treatment methods. Other topics include surface water drainage, solid waste management (types, effects, and engineered management systems), air pollution (pollutants, causes, effects, and control), and noise pollution (causes, health effects, and control). Theory of Structures This subject includes elasticity constants and types of beams, both determinate and indeterminate. It covers bending moment and shear force diagrams for simply supported, cantilever, and overhanging beams. Other important topics are moment of area, moment of inertia for rectangular and circular sections, chimneys, dams, retaining walls, eccentric loading, slope deflection of beams, critical load on columns, and torsion of circular sections. Concrete Technology Concrete Technology deals with the properties, advantages, and uses of concrete. It includes cement and aggregates, importance of water quality, water–cement ratio, workability, and mix design. The subject also covers storage, batching, mixing, placement, compaction, finishing, and curing of concrete, quality control, hot weather and cold weather concreting, and repair and maintenance of concrete structures. RCC Design RCC Design includes flexural strength, shear strength, and bond strength of RCC beams. It covers design of singly and doubly reinforced beams, cantilever beams, T-beams, lintels, one-way and two-way slabs, and isolated footings. It also includes reinforced brick work, columns, staircases, retaining walls, and water tanks. Questions may be based on both Limit State Method and Working Stress Method. Steel Design Steel Design covers the design and construction of steel structures, including steel columns, steel beams, roof trusses, and plate girders. |
| Electrical Engineering | Basic Electrical Engineering This section covers Ohm’s Law and its applications, along with a detailed study of AC and DC circuits. It includes important network theorems such as Thevenin’s theorem, Norton’s theorem, and the Superposition theorem. Candidates must also understand series and parallel circuits, their characteristics, and practical applications. Electrical Machines Electrical Machines includes the study of transformers, covering their working principle, losses, and efficiency. It also covers DC machines, including DC motors and generators, along with starting methods and speed control techniques. Other important topics are induction motors, both single-phase and three-phase, and synchronous machines, focusing on their construction, operation, and applications. Power Systems This subject deals with the generation of electrical power, including thermal, hydro, nuclear, and renewable energy sources. It also includes transmission and distribution systems, fault analysis, and protection schemes. Important concepts such as power factor improvement and basic load flow analysis are also part of this section. Electrical Circuits & Networks This section covers mesh analysis and nodal analysis for solving electrical networks. It includes resonance in AC circuits, transient analysis in RLC circuits, and the study of two-port networks, along with their parameters and applications. Measurements & Instrumentation Measurements and Instrumentation includes electrical measuring instruments and the study of errors in measurement along with error analysis. It covers measurement of power, energy, resistance, inductance, and capacitance. Candidates must also study bridges, digital instruments, and transducers, along with their working principles and uses. Control Systems Control Systems covers open-loop and closed-loop systems, transfer functions, and block diagrams. It includes time-domain analysis and frequency-domain analysis, along with stability criteria. Key topics such as root locus technique and Bode plots are also included. Power Electronics Power Electronics deals with rectifiers, inverters, and converters. It also includes choppers and cycloconverters, along with the basics of SMPS and UPS, focusing on their operation and applications. Utilization of Electrical Energy This section includes electric drives and electric traction systems. It also covers electric heating and welding techniques. Another important topic is illumination, including different types of lamps and lighting calculations. Switchgear & Protection Switchgear and Protection covers circuit breakers and relays, along with the protection of generators, transformers, and transmission lines. It also includes overcurrent protection, differential protection, and distance protection, which are essential for power system safety and reliability. |
| Mechanical Engineering | Engineering Mechanics Engineering Mechanics covers the laws of motion and the study of force systems and equilibrium. It includes friction, centroid, and moment of inertia, along with the kinematics and dynamics of particles and rigid bodies, focusing on motion, forces, and their effects on engineering systems. Strength of Materials This subject deals with stress and strain relationships in materials. It includes bending moment and shear force diagrams, torsion in shafts, columns and struts, and the behavior of thin and thick-walled cylinders under different loading conditions. Thermodynamics Thermodynamics includes the First and Second Laws of Thermodynamics and the study of properties of pure substances. It covers entropy and energy interactions, along with important thermodynamic cycles such as the Otto cycle, Diesel cycle, Rankine cycle, and refrigeration cycles. Theory of Machines Theory of Machines covers mechanisms and linkages, gears and gear trains, flywheels and governors, and cams and followers. It also includes balancing of rotating and reciprocating masses and the study of vibrations of single-degree and multi-degree of freedom systems. Fluid Mechanics Fluid Mechanics deals with properties of fluids, fluid statics, and buoyancy. It includes Bernoulli’s theorem and its applications, flow through pipes, losses and efficiency, and the working principles of hydraulic turbines and centrifugal pumps. Heat Transfer Heat Transfer covers the modes of heat transfer, namely conduction, convection, and radiation. It includes heat exchangers and thermal insulation, focusing on heat flow analysis and thermal performance of systems. IC Engines & Power Plants This section includes the working and performance analysis of internal combustion engines. It covers fuel types, combustion analysis, boilers, steam turbines, and gas turbines, along with the basics of power plant engineering. Manufacturing Engineering Manufacturing Engineering covers casting processes, welding, forming, and machining operations. It includes machine tools and tool geometry, jigs, fixtures, and gauges, as well as non-traditional machining processes. Industrial Engineering & Production This subject includes work study and time study, plant layout, and material handling systems. It also covers production planning and control, focusing on efficiency and productivity in manufacturing systems. Design of Machine Elements Design of Machine Elements includes the design of shafts, keys, and couplings. It also covers springs, bearings, and gears, along with brakes and clutches, emphasizing strength, durability, and functional requirements. |
How many questions will be asked in BTSC JE Exam 2025?
A total of 100 questions will be asked in BTSC JE Exam 2025.
