Basic Electrical Principles

Electrical Engineering · Level 5  ·  6 Chapters

Compiled by: Joan Cherono

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What Basic Electrical Principles covers

Electrical quantities, cells, magnetism, capacitors, circuits and instruments make up Basic Electrical Principles in Electrical Engineering Level 5. Quantities and their SI units come first, with Ohm's law and calculations. Cells and batteries cover sources of electricity, electrolysis and simple cells, plus primary and secondary types, with e.m.f. and internal resistance and how batteries are maintained. Magnetism covers fields, electromagnetic induction, self and mutual induction. Electrostatics covers capacitors in series and parallel, and how to measure and test them. Resistance and resistivity, series and parallel circuits and basic laws follow, and the unit closes with transducers, electrical instruments and systematic errors.

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Careers after Basic Electrical Principles

In the world of Kenyan industry, construction, renewable energy and everyday services, the fundamentals you master in this unit become the tools that keep lights on, machines running, and communities connected. Below are some of the places you’ll find yourself putting these skills to work and earning a livelihood.

  • Electrical maintenance workshops in Nairobi’s industrial estates - you read multimeters, clamp meters and insulation testers to diagnose faults, calculate load currents and verify that wiring complies with IEC standards, earning a fee for each repair or preventive-maintenance contract.
  • Solar-home-system installation teams in Turkana and Kitui - you size batteries, measure EMF and internal resistance, and perform routine battery maintenance, ensuring reliable power for households and charging a service charge per installation and follow-up visit.
  • Telecommunication tower sites along the North-East corridor - you apply knowledge of electromagnetic induction and self-mutual induction to service backup generators and UPS units, charging the network operator for each uptime guarantee you deliver.
  • Automotive service centres in Kiambu and Mombasa - you test car batteries, determine their state of health, and replace or refurbish them, billing customers for diagnostics and battery replacement.
  • Water-pumping stations in the Rift Valley - you calculate resistance and resistivity of motor windings, select appropriate magnetic materials for transformers, and ensure AC power quality, receiving a monthly stipend for plant reliability.
  • Electronics assembly shops in Nakuru’s tech hubs - you select the right type of capacitor, compute series-parallel networks, and test each component against IEC standards, earning a piece-rate for every fully tested circuit board.
  • Hospital biomedical equipment departments in county referral hospitals - you verify that defibrillators, ventilators and imaging devices have correctly calibrated capacitors and battery systems, receiving a salary for each equipment certification you complete.
  • Agricultural processing units in Eldoret (e.g., milk cooling and grain milling) - you apply AC fundamentals to run motor-driven equipment, monitor power factor and harmonic distortion, and charge the business for energy-efficiency audits.
  • Construction sites in coastal resorts - you perform on-site calculations of voltage drop, select appropriate conductors, and use magnetic field knowledge to safely route power for temporary lighting, earning daily wages as a site electrician.
  • Small-scale renewable-energy cooperatives in Kisumu - you design simple galvanic cells for experimental storage, test their EMF, and train community members, receiving stipends for each training session and for maintaining the cooperative’s power kits.

Your grasp of these core electrical principles opens doors across Kenya’s growing economy - whether you choose a steady job in a large facility or launch your own freelance service. Keep building confidence, and the circuits you master today will power the opportunities of tomorrow.

Chapters

What Basic Electrical Principles covers: 34 main topics in 6 chapters

1. Applying Electrical quantities

  1. 1.1 The meaning of SI unit
  2. 1.2 SI unit of various types of Electrical parameters
  3. 1.3 Ohm's law
  4. 1.4 Calculations involving various Electrical parameters e.g. Power, Current, Voltage, Resistance
  5. 1.5 Instruments used in measuring various types of Electrical parameters

2. Using cells and batteries

  1. 2.1 Sources of electricity
  2. 2.2 electrolysis and its applications
  3. 2.3 Simple cells
  4. 2.4 Primary and secondary cells
  5. 2.5 Types of cells and batteries
  6. 2.6 E.m.f and internal resistance of cells
  7. 2.7 Maintenance of batteries
  8. 2.8 Applications of batteries

3. Apply magnetism and electromagnetism concepts

  1. 3.1 Magnetic and non-magnetic materials
  2. 3.2 Concepts of magnetic fields and field distribution
  3. 3.3 Concepts of electromagnetism
  4. 3.4 Laws of electromagnetic induction
  5. 3.5 Concepts of self and mutual induction

4. Apply Electrostatics principles

  1. 4.1 Electrostatics quantities
  2. 4.2 Types of capacitors
  3. 4.3 Concept of charge and electrostatic field
  4. 4.4 Capacitors in series and parallel
  5. 4.5 Measurement of capacitance
  6. 4.6 Application of Capacitors
  7. 4.7 Testing of capacitor

5. Apply concepts of D.C circuit theory

  1. 5.1 Resistance and Resistivity
  2. 5.2 Parallel and Series Circuits
  3. 5.3 Basic Electrical Laws

6. Performing electrical measurements

  1. 6.1 Types of transducers
  2. 6.2 Types of electrical instruments
  3. 6.3 Measurements of electrical quantities using Instruments
  4. 6.4 Calculations involving electrical instruments
  5. 6.5 Instrumental/systematic errors
  6. 6.6 Calculations Involving Systematic Errors

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Beyond the syllabus

Other units in Module III