| 1. Occupational Safety & Health (OSH) |
Basic Safety & Personal Protection: Injury prevention, first aid, PPE usage, hazard identification & avoidance, safety signs (danger, warning, caution, personal safety), fire extinguisher use, workplace observation and safety practices
Workplace Hygiene: Importance of housekeeping & good shop floor practices, waste disposal procedures (cotton waste, metal chips)
Regulations & Guidelines: HSE legislations, compliance with standards |
| 2. Electrical Fundamentals |
National Electrical Code (NEC) 2011: Conductor/insulator definitions, wire/cable specs, standard wire gauge, voltage grades, cable handling precautions
Basic Electrical Theory: Ohm’s Law, resistance, resistors, Kirchhoff’s Laws, Wheatstone Bridge, electrical circuit layout reading |
| 3. Electrical Accessories & Installations |
Common Accessories: Switches, sockets, plugs, lamp holders, MCB, ELCB, MCCB, alarm systems, domestic circuits
Wiring Systems: Domestic & industrial wiring types, wiring standards, PVC/concealed systems, testing with megger, layout principles |
| 4. Batteries & Energy Storage |
Cells: Lead-acid, Ni-Cd, lithium, dry and rechargeable cells, grouping of cells, solar battery use
Battery-Related Equipment: Inverters, chargers, UPS systems, charging precautions and maintenance |
| 5. AC & DC Systems |
DC Machines: Generators and motors (types, EMF equation, uses), maintenance, efficiency, torque concepts
AC Theory: AC vs DC, sine wave generation, RMS/average values, power factor, single vs three-phase systems, star & delta connections
Transformers: Working principle, EMF equation, classification, cooling methods, protective devices, oil testing
Alternators: Operation, excitation, parallel operation, AVRs, schematic wiring diagrams |
| 6. Earthing and Grounding |
Methods of Earthing: Pipe, plate earthing, importance and resistance improvement, ELCBs, BIS and IEC standards |
| 7. Basic Electronics |
Semiconductors: Atomic structure, energy levels, PN junction, diode types, biasing
Rectifiers & Filters: Half-wave, full-wave, bridge circuits, passive filter circuits |
| 8. Measuring Instruments |
Electrical Instruments: PMMC, MI meters, multimeters, wattmeter, energy meters, frequency meter, earth tester, insulation tester (megger), tachometer, phase sequence meter, tong tester |
| 9. Motors |
Three-Phase Induction Motors: Squirrel cage, slip ring motors, star/delta, DOL, rotor resistance starters
Single-Phase Motors: Capacitor start/run, shaded pole, universal motor
Others: Stepper, hysteresis, repulsion motors, applications, braking systems, fault diagnosis |
