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BTSC ITI Instructor Welder Free Mock Test
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BTSC ITI Instructor (Welder) Syllabus 2026, Exam Pattern
BTSC ITI Instructor (Welder) Syllabus 2026, Exam Pattern, Exam Date 2026
Detail Information about BTSC has published notification 2026 for the recruitment of ITI Instructor (Welder) vacancies. Those Candidates who are Interested to the following vacancy and completed all Eligibility Criteria can read the Notification & Apply Online. In this page we provide the Complete Syllabus of this Recruitment with Latest Update Exam Pattern and the Exam Date also.
BTSC ITI Instructor Syllabus 2026 - Overview
| Recruitment Authority | Bihar Technical Service Commission |
| Post Name | ITI Instructor (Welder) |
| Vacancies | 84 |
| Selection Process | Written Exam/Experience |
| Job Location | Bihar |
| Category | Syllabus and Exam Pattern |
| Official Website | https://btsc.bih.nic.in |
BTSC ITI Instructor (Welder) Syllabus 2026
Technical Subject :-
Welder :
Introduction to Welding - Are and Gas Welding Equipment's, tools and accessories; Different process of metal joining methods: Bolting, riveting, soldering, brazing, scaming etc.; Types of welding joints and its applications. Edge preparation and fit up for different thickness; Surface Cleaning; Are welding power sources- Transformer, Rectifier and Inverter type welding machines and its care &maintenance; Weld slope and rotation;
Oxy Acetylene Welding:
Calcium carbide uses and hazard; Acetylene gas properties and flash back arrestor; Oxygen gas and its properties; Charging process of oxygen and acetylene gases Oxygen and Dissolved Acetylene gas; cylinders andColor coding for different gas cylinders; Uses of single and double stage Gas regulators; Oxy acetylene gas welding System; Metalizing; Manual Oxy acetylene powder coating process-principles of operation and applications;
Oxy Acetylene Gas cutting:
Common gases used for welding & cutting, flame temperatures and usos. Types of oxy-acetylene lames and uses. Oxy-Acetylene Cutting Equipment principle, parameters and application.
Difference between gas welding blow pipe(LP &HP) and gas cutting blow pipe; Gas welding techniques; Specification of pipes; pipe joints; pipe welding- all positions, and procedure; plate welding; Pipe development for Elbow joint, "T" joint, Y joint and branch joint; Brief use of Manifold system;
Reading of assembly drawing - Welding Procedure Specification (WPS) and Procedure Qualification Record (PQR) Hord facing/ surfacing necessity, surface preparation, various hard facing alloys and advantages of hard facing.
Are welding: Arc and Gas Welding terms and definitions; Basic electricity applicable to arc welding; Heat and temperature and its terms related to wekting Principle of are welling and characteristics of arc. Advantages and disadvantages of A.C. and D.C. welding machine,ekling positions as per EN &ASME; Welding syΔ±nbols as per BIS & AWS. Arc blow-causes and methods of controlling; Distortion in are &gas welding methods employed to minimize distortion Arc Welding defects, causes and Remedies; Are length types, effects of are length; Polarity-Types and applications; Gas welding filler rods, specifications and sizes. Gas welding luxes types and functions
Gas Brazing & Soldering: principles, types fluxes & uses Gas welding defects, causes and remedios; Electrode types, functions of flux, conting factor, sive specifications of electrode; Effects of moisture pick up.-Storage and baking of electrodes: Weldability of metals; importance of pre heating, post heating and maintenance of inter pass temperature; Welding of low, medium and high carbon streel and alloy steels, Cast Iron, weld decay and weldability
Induction welding, brazing of copper tuber; Brass types, properties and welding methods, - Copper -types, properties and welding methods; Brazing cutting tools, Aluminium properties and weldsbility, Welding methods - Arc cutting & gouging.
Gas Metal Are welding:
Introduction to GMAW equipment Recessories. Various other names of the process(MIG/MAG/CO2 wekling); Safety precautions; Advantages of GMAW welding over SMAW; limitations and applications Process variables of GMAW, Wire feed system types care and maintenance, Welding wires used in GMAW; shielding gases used in GMAW and its applications; Flax cored arc welding-description, advantage, welding wires, coding as per AWS. Edge preparation; GMAW defects, cousss and remedies; Hen: input rad techniqen of controlling heat input during welling. - Heat distribution and effecretiver coolne, refresting te Post Weld fost Treatment - Use of temperature indicating crayons. Submerged in welling process-principles, equipament, advantages and limitations; Thermit welding process, types, principles, equipment's; Thermit mixture types an applications
Gas Tungsten Are welding:
GTAW process brief description, working principle; Difference between AC and DC welding equipment's, polarities and applications; Power sources for GTAWAC&DC; Tungsten olectrodes types & uses, sizes and preparation; GTAW Torches-types, parts and their functions; GTAW filler rod and selection criteria. Edge preparation and fit up; GTAW parameters for welding of different thickness of metals, Argon/Helium gas properties-uses; GTAW Defects, causes and remedy, Plastic welding machine with hot air gun and plastic material: Polypropylene (PP) Polyethylone (PE)
Polyvinylchloride (PVC) Non-traditional welding:
Friction welding process equipment and application; Laser bearm welding (LBW); PlasΔ±na Arc Welding (PAW) and Plasma Are cutting (PAC) process equipment's and principles of operation; Types of Plasma aro advantages and applications; Resistance welding process-types, principles, power sources and welding parameters - Applications and limitations.
Weld quality inspection; common welding mistakes and appearance of good and defective welds; Weld gauges & its uses; Types of Inspection methods Classification of destructive and NDT methods-Welding economics and Cost estimation.
Engineering Drawing:
Introduction to Engineering Drawing and Drawing Instruments; Conventions Sizes and layout of drawing sheets Title Block, its position and content Drawing Instrument Free hand drawing of, Geometrical figures and blocks with dimension Transferring measurement from the given object to the free hand sketches; Free hand drawing of hand tools and measuring tools; Lines Types and applications in drawing; Drawing of Geometrical figures; Angle, Triangle, Circle, Rectangle, Square, Parallelogram; Luttering & Numbering Single Stroke, double stroke, inclined Reading of dimension and Dimensioning Practice; Reading of fabrication drawing, sectional view of different types of welding Joints; Sectional view of differet ipe joints Symbolic representation different symbols used in the related trades Rending of fob Drawing of related trades.
Basic Mathematics and Science:
-Unit, Practions Square root, Ratio and Proportions, Percentage - Material Science - Mass, Weight,Volame and Density-Heat & Temperature and Pressare - Basic Electricity-Mensuration - Trigonometry
Oxy Acetylene Welding:
Calcium carbide uses and hazard; Acetylene gas properties and flash back arrestor; Oxygen gas and its properties; Charging process of oxygen and acetylene gases Oxygen and Dissolved Acetylene gas; cylinders andColor coding for different gas cylinders; Uses of single and double stage Gas regulators; Oxy acetylene gas welding System; Metalizing; Manual Oxy acetylene powder coating process-principles of operation and applications;
Oxy Acetylene Gas cutting:
Common gases used for welding & cutting, flame temperatures and usos. Types of oxy-acetylene lames and uses. Oxy-Acetylene Cutting Equipment principle, parameters and application.
Difference between gas welding blow pipe(LP &HP) and gas cutting blow pipe; Gas welding techniques; Specification of pipes; pipe joints; pipe welding- all positions, and procedure; plate welding; Pipe development for Elbow joint, "T" joint, Y joint and branch joint; Brief use of Manifold system;
Reading of assembly drawing - Welding Procedure Specification (WPS) and Procedure Qualification Record (PQR) Hord facing/ surfacing necessity, surface preparation, various hard facing alloys and advantages of hard facing.
Are welding: Arc and Gas Welding terms and definitions; Basic electricity applicable to arc welding; Heat and temperature and its terms related to wekting Principle of are welling and characteristics of arc. Advantages and disadvantages of A.C. and D.C. welding machine,ekling positions as per EN &ASME; Welding syΔ±nbols as per BIS & AWS. Arc blow-causes and methods of controlling; Distortion in are &gas welding methods employed to minimize distortion Arc Welding defects, causes and Remedies; Are length types, effects of are length; Polarity-Types and applications; Gas welding filler rods, specifications and sizes. Gas welding luxes types and functions
Gas Brazing & Soldering: principles, types fluxes & uses Gas welding defects, causes and remedios; Electrode types, functions of flux, conting factor, sive specifications of electrode; Effects of moisture pick up.-Storage and baking of electrodes: Weldability of metals; importance of pre heating, post heating and maintenance of inter pass temperature; Welding of low, medium and high carbon streel and alloy steels, Cast Iron, weld decay and weldability
Induction welding, brazing of copper tuber; Brass types, properties and welding methods, - Copper -types, properties and welding methods; Brazing cutting tools, Aluminium properties and weldsbility, Welding methods - Arc cutting & gouging.
Gas Metal Are welding:
Introduction to GMAW equipment Recessories. Various other names of the process(MIG/MAG/CO2 wekling); Safety precautions; Advantages of GMAW welding over SMAW; limitations and applications Process variables of GMAW, Wire feed system types care and maintenance, Welding wires used in GMAW; shielding gases used in GMAW and its applications; Flax cored arc welding-description, advantage, welding wires, coding as per AWS. Edge preparation; GMAW defects, cousss and remedies; Hen: input rad techniqen of controlling heat input during welling. - Heat distribution and effecretiver coolne, refresting te Post Weld fost Treatment - Use of temperature indicating crayons. Submerged in welling process-principles, equipament, advantages and limitations; Thermit welding process, types, principles, equipment's; Thermit mixture types an applications
Gas Tungsten Are welding:
GTAW process brief description, working principle; Difference between AC and DC welding equipment's, polarities and applications; Power sources for GTAWAC&DC; Tungsten olectrodes types & uses, sizes and preparation; GTAW Torches-types, parts and their functions; GTAW filler rod and selection criteria. Edge preparation and fit up; GTAW parameters for welding of different thickness of metals, Argon/Helium gas properties-uses; GTAW Defects, causes and remedy, Plastic welding machine with hot air gun and plastic material: Polypropylene (PP) Polyethylone (PE)
Polyvinylchloride (PVC) Non-traditional welding:
Friction welding process equipment and application; Laser bearm welding (LBW); PlasΔ±na Arc Welding (PAW) and Plasma Are cutting (PAC) process equipment's and principles of operation; Types of Plasma aro advantages and applications; Resistance welding process-types, principles, power sources and welding parameters - Applications and limitations.
Weld quality inspection; common welding mistakes and appearance of good and defective welds; Weld gauges & its uses; Types of Inspection methods Classification of destructive and NDT methods-Welding economics and Cost estimation.
Engineering Drawing:
Introduction to Engineering Drawing and Drawing Instruments; Conventions Sizes and layout of drawing sheets Title Block, its position and content Drawing Instrument Free hand drawing of, Geometrical figures and blocks with dimension Transferring measurement from the given object to the free hand sketches; Free hand drawing of hand tools and measuring tools; Lines Types and applications in drawing; Drawing of Geometrical figures; Angle, Triangle, Circle, Rectangle, Square, Parallelogram; Luttering & Numbering Single Stroke, double stroke, inclined Reading of dimension and Dimensioning Practice; Reading of fabrication drawing, sectional view of different types of welding Joints; Sectional view of differet ipe joints Symbolic representation different symbols used in the related trades Rending of fob Drawing of related trades.
Basic Mathematics and Science:
-Unit, Practions Square root, Ratio and Proportions, Percentage - Material Science - Mass, Weight,Volame and Density-Heat & Temperature and Pressare - Basic Electricity-Mensuration - Trigonometry
General Studies & Current Affairs :
1. History (Ancient, Medieval, Modern)
2. Geography (Physical, Economic, World)
3. Indian Polity and Governance
4. Indian Economy (including Budget, Banking, and Finance)
5. Science and Technology
6. Environmental Studies
7. Current Affairs (National and International)
8. Social Issues and Social Welfare Programs
9. Sports and Awards
10. Art and Culture
11. Disaster Management
12. Government Schemes and Policies
13. Indian Constitution
14. International Relations
15. Important Events and Anniversaries
16. Books and Authors
17. Personalities in News
18. Scientific Discoveries and Innovations
19. National and International Organizations
20. Security and Defense-related matters
βBTSC ITI Instructor (Welder) Exam Pattern 2026
Duration : 120 Minutes
Negative Marking : 0.25
Exam Date : Update Soon
Starting Date of Application Form : 15th April 2026
Last Date of Application Form : 15th May 2026
Total Post : 84
Negative Marking : 0.25
| S.No | Subject | No.of Question | Mark |
| 1 | Technical Subject | 80 | 80 |
| 2 | General Studies & Current Affairs | 20 | 20 |
| Total | 100 | 100 |
Exam Date : Update Soon
Starting Date of Application Form : 15th April 2026
Last Date of Application Form : 15th May 2026
Total Post : 84
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