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Electrical Principles II

Electronics Engineering · Level 6  ·  3 Chapters

Compiled by: Winnie Cherono

Can I download Electrical Principles II notes as a PDF?

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What Electrical Principles II covers

How generators, motors and three phase supplies work, and how circuits respond when switched, is covered in Electrical Principles II for Electronics Engineering Level 6. The first outcome is electrical machines: their identification, operation, control, applications and the e.m.f. equation, with calculations. The second is three phase power, from generation to connections, calculations and measurement. The third is transients in DC circuits, deriving growth and decay equations for R-L and R-C circuits, applying time constants to the switching of inductive and capacitive loads, and analysing passive and active filters.

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Careers after Electrical Principles II

Machines, three phase supplies and switching circuits all rest on the principles in this unit.

  • Standby generator installers in Lodwar - identify machines, follow how a generator's e.m.f. equation is derived and control its operation. You are paid per installation.
  • Factory power rooms in Bungoma - connect loads to a three phase supply and check its measurements. You are employed as a plant technician.
  • Pump and motor suppliers in Busia - match electrical machines to their applications and calculate what each needs. You earn a salary or commission.
  • Electronics design offices in Meru - analyse passive and active filters in circuit designs. You work on a design team on a salary.
  • Control panel builders in Migori - use time constants to predict how R-L and R-C circuits respond when inductive and capacitive loads are switched. You are paid per panel or on a wage.

Work through one calculation from each outcome before you apply to any of these.

Chapters

1
Apply electrical machines
11 topics
Open chapter →
2
Apply three phase power supply
8 topics
Open chapter →
3
Apply transients in DC Circuits
5 topics
Open chapter →
What Electrical Principles II covers: 13 main topics in 3 chapters

1. Apply electrical machines

  1. 1.1 Electrical machines identification
  2. 1.2 electrical machines operations
  3. 1.3 Derivation of generator e.m.f equation
  4. 1.4 Electrical machine control
  5. 1.5 Calculations involving electrical machines
  6. 1.6 Applications of electrical machines

2. Apply three phase power supply

  1. 2.1 Principles of three phase power generation
  2. 2.2 Connections of three phase power supply
  3. 2.3 Calculations involving three phase power supply connections
  4. 2.4 Measurements of three phase power supply

3. Apply transients in DC Circuits

  1. 3.1 Derivation of growth and decay equations in R-L and R-C circuits
  2. 3.2 Application of the effect of time constant in switching inductive and capacitive loads
  3. 3.3 Analysis of Passive and Active Filters

Practise this unit

The practical 31 The assessment itself: tools, materials and the marks Step-by-step guide 31 PPE, each step, what good looks like, common mistakes

Revise this unit

Exam-style questions 42 Written to CDACC standard, with answers Test yourself 124 Multiple-choice, one at a time Practise questions Quick recall — check you know the facts
3 more for this unit
Oral exam preparation 30 What the assessor asks, and how to answer out loud Worked calculations 23 Step-by-step maths with the common mistakes Quick cards 605 Myth busters, skill tips and scenarios

Beyond the syllabus

Decision simulator 3 On site, what would you do? Workplace scenarios 61 Real site situations — what would you do? Turn this into income 36 Where this skill earns — what to charge, how to find clients

Other units in Module IV