Odisha CHSE +2 Vocational PDFM (RMPDFM) study guide
Odisha CHSE +2 Vocational PDFM (RMPDFM) · Work through your exam, one topic at a time.
The Odisha CHSE +2 Vocational PDFM (RMPDFM) is a higher secondary vocational qualification awarded through the Council of Higher Secondary Education, Odisha, in the trade area commonly abbreviated PDFM/RMPDFM. It is designed for students who want a Class XII-equivalent credential built around a practical trade rather than a purely academic stream, combining trade theory and workshop practice with drawing, measurement and quality control, applied science and mathematics, employability and entrepreneurship skills, basic computer applications, and environmental and occupational health awareness. The Odisha CHSE +2 Vocational PDFM (RMPDFM) study guide has 9 sections and about 2,571 words.
01Trade Theory and Fundamentals of the Vocational Trade (PDFM/RMPDFM)
This domain tests how well you understand the systems of power-driven farm machinery - diesel engines, fuel and air delivery, cooling, lubrication, transmission, hydraulics and 12 V electrical circuits - and the principles that explain their behaviour in service. A four-stroke diesel engine completes suction, compression, power and exhaust in two crankshaft revolutions; ignition is by heat of compression, not a spark plug.
335 words, about 2 min02Trade Practical Skills and Workshop/Lab Procedures
Domain 2 examines whether you can carry out workshop jobs in a safe, repeatable sequence: isolation, dismantling, inspection, repair, reassembly, adjustment and functional test. Examiners look for method, not speed.
285 words, about 1 min03Engineering Drawing, Schematics and Technical Documentation
Domain 3 tests your ability to read and produce the drawings and schematics used in repair: orthographic views, sections, dimensioning with limits and fits, surface-finish symbols, and hydraulic/electrical circuit diagrams. India follows first-angle projection: the view from the front is placed above the top view, and the view from the left is placed on the right.
301 words, about 2 min04Materials, Tools, Equipment and Safety Practices
Domain 4 tests material selection for farm-machinery components and the safe choice and use of hand tools, lifting equipment and protective gear. Engine blocks and housings are usually grey cast iron for damping and castability; crankshafts and connecting rods are forged steel; bushes are bronze or bearing shells with a steel backing.
287 words, about 1 min05Measurement, Inspection, Quality Control and Standards
Domain 5 tests measurement, inspection and quality decisions: choosing the right instrument, reading it correctly, comparing with wear limits, and recording results against standards. Vernier caliper least count = 1 main-scale division − 1 vernier division; common metric LC is 0.02 mm.
273 words, about 1 min06Applied Science and Mathematics relevant to the Trade
Domain 6 tests the science and arithmetic behind shop decisions: force, torque, power, pressure, thermal efficiency, electrical circuits, gear ratios and unit conversion. Torque = force × perpendicular distance; power = torque × angular velocity.
284 words, about 1 min07Entrepreneurship, Employability Skills and Communication
Domain 7 tests whether you can turn a repair skill into a viable service or custom-hiring enterprise, and communicate professionally with farmers, dealers and inspectors. Separate fixed costs (shed, insurance, depreciation, licence) from variable costs (fuel, labour, repairs, filters).
262 words, about 1 min08Computer/IT Applications and Digital Skills in the Trade
Domain 8 tests digital tools used in modern farm-machinery service: diagnostic scan tools, digital multimeters, spreadsheets, inventory and service records, and basic cyber-safe practice. Read and record diagnostic trouble codes (DTCs) and freeze-frame data before clearing anything.
269 words, about 1 min09Environmental Awareness, Occupational Health and Workplace Ethics
Domain 9 tests environmental responsibility and safe, honest conduct in the workshop and field: emission control, waste segregation, noise and dust control, and professional ethics. Diesel exhaust contains NOx, particulate matter and CO; Bharat Stage norms tighten these limits.
275 words, about 1 min