NAVTTC Auto Electrician study guide
NAVTTC Auto Electrician · Work through your exam, one topic at a time.
The NAVTTC Auto Electrician trade test is a competency assessment for candidates seeking recognition of automotive electrical skills under Pakistan's National Vocational Qualifications Framework (NVQF). It is intended for trainees of programs such as the Prime Minister's Youth Skills Development Program (PMYSDP) and experienced workers pursuing Recognition of Prior Learning (RPL). The NAVTTC Auto Electrician study guide has 8 sections and about 2,870 words.
01Workplace Safety
The Workplace Safety domain checks whether you can set up and control an automotive electrical job so nobody gets hurt: battery handling, high-current short circuits, fire, acid, exhaust gas, lifting and housekeeping. Questions are scenario-based, not definitions.
404 words, about 2 min02Tools and Workshop Practice
This domain tests correct selection, use, care and calibration of hand tools, measuring instruments and wiring-repair materials: spanner types, torque, micrometers and verniers, multimeters, crimping and soldering, drills and taps. Expect questions on which tool suits which fastener and on reading a measurement correctly.
371 words, about 2 min03Electrical Fundamentals and Circuit Principles
Ohm's law and power, series and parallel networks, voltage drop, Kirchhoff's laws, magnetism and relays, cable and fuse selection, and basic component behaviour. Questions here are numeric and circuit-logic based, so show the calculation.
383 words, about 2 min04Batteries
Lead-acid construction, ratings (Ah, CCA, RC), state of charge, load and conductance testing, charging methods, maintenance and safe handling, plus AGM/EFB differences. Expect voltage figures and interpretation questions.
357 words, about 2 min05Starting and Charging Systems
Starter motor and solenoid operation, the control circuit, alternator construction and regulation, belt drive, the warning-lamp circuit, and voltage-drop testing of both systems. A series-wound DC motor gives high torque at low speed; cranking draw is typically 150–250 A.
346 words, about 2 min06Ignition
Coil operation, dwell, available spark voltage, distributor versus distributorless versus coil-on-plug systems, HT leads, spark plug specification and reading, timing and knock control. Coil: primary winding about 0.5–1.0 Ω, secondary about 5–15 kΩ, turns ratio near 1:100, producing 20–40 kV.
353 words, about 2 min07Lighting and Accessory Circuits
Headlamp, tail, brake, indicator, reverse and interior circuits; relays and fuses; bulb types; wipers, horn, windows and central locking; and legal headlamp aiming. High-current lamps are fed through a relay; the switch carries only coil current.
323 words, about 2 min08Diagnosis, Testing and Fault Rectification
A structured diagnostic process, use of DTCs and scan data, multimeter and oscilloscope technique, voltage-drop and parasitic-draw testing, and correct verification of the repair. Verify and record the complaint; check service history and obvious causes such as fuses, connectors and battery state.
333 words, about 2 min