BTEB Electrician (EIM) Exam study guide
BTEB Electrician (EIM) Exam · Work through your exam, one topic at a time.
The BTEB Electrician (EIM) credential is a Bangladeshi technical trade qualification awarded through the Bangladesh Technical Education Board for people who install, maintain and repair electrical wiring and equipment. It suits trainees leaving a technical school or polytechnic electrician course, apprentices working under a licensed electrician, and practising helpers who want formal recognition of their skills. The BTEB Electrician (EIM) Exam study guide has 10 sections and about 3,107 words.
01Occupational Health, Safety and Environment
Candidates must understand electrical safety principles: shock hazards (current path, duration, body resistance), arc flash and blast, lockout/tagout (LOTO), personal protective equipment (PPE), and safe isolation procedures. Know the effects of current on the body (e.g., 30 mA can cause respiratory paralysis; 50 mA can cause ventricular fibrillation).
309 words, about 2 min02Basic Electrical Principles and Calculations
Understand Ohm’s law (V = IR), power equations (P = VI = I²R = V²/R), Kirchhoff’s laws, series and parallel circuits, and AC fundamentals (frequency, period, peak, RMS, average values). Know that RMS = peak/√2 for sine waves, and form factor = RMS/average = 1.11 for sine.
331 words, about 2 min03Electrical Materials
Know conductors (copper, aluminum), insulators (PVC, XLPE, rubber, porcelain), and semiconductors. Understand cable construction: conductor, insulation, bedding, armor, sheath.
281 words, about 1 min04Electrical Tools and Hand Skills
Identify and use hand tools: screwdrivers (flat, Phillips, Pozidriv), pliers (combination, long-nose, side-cutters), wire strippers, crimping tools, hammers, chisels, files, hacksaws, and measuring tools (tape, Vernier caliper, micrometer). Understand power tools: drills, angle grinders, and their safety.
283 words, about 1 min05Wiring Systems, Installation and Protection
Understand wiring systems: cleat, casing and capping, conduit (PVC, metal), trunking, cable tray, and busbar. Know installation methods (surface, concealed, buried) and their impact on current-carrying capacity.
308 words, about 2 min06Electrical Machines and Transformers
Understand transformer principles: turns ratio (V1/V2 = N1/N2 = I2/I1), types (core, shell, auto), losses (copper, iron), and efficiency. Know DC machines: shunt, series, compound motors and generators, and their characteristics.
275 words, about 1 min07Electrical Control and Motor Starting
Understand control circuits: start/stop pushbuttons, contactors, relays, overload relays, timers, and limit switches. Know motor starting methods: direct-on-line (DOL), star-delta, auto-transformer, soft starter, and variable frequency drive (VFD).
267 words, about 1 min08Testing, Fault Finding and Maintenance
Understand testing instruments: multimeter, insulation resistance tester (megger), earth loop impedance tester, RCD tester, and clamp meter. Know tests: continuity, insulation resistance (≥1 MΩ for LV), polarity, earth electrode resistance, and RCD trip time.
289 words, about 1 min09Electrical Drawing, Estimation and Documentation
Understand electrical symbols and diagrams: schematic, wiring, and layout diagrams. Know how to interpret single-line diagrams, cable schedules, and bill of quantities (BOQ).
238 words, about 1 min10Electronics and Modern Electrical Applications
Understand basic electronic components: diodes, transistors, thyristors, triacs, and their applications. Know rectification (half-wave, full-wave, bridge), filtering, and voltage regulation.
526 words, about 3 min