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Module 18 — Electric Power Plant

18.3 — Engine Construction

Practice questions test what you know. This note teaches what you don’t.

Question banks train recall. The questions that decide a pass are the borderline ones, where two answers look right — and those are won by understanding. That is what this note is written for.

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This chapter is about how an electric engine is built: the machine types in use, what the stator and rotor are made of, how the shaft is carried and the heat taken away, how the windings are insulated and the equipment enclosed, how the inverter and controller turn battery current into a rotating field, and how motor, controller and any gearbox are put together into one propulsion unit. It carries 9 of the 76 Module 18 questions. Two words are …

6 sections 10 worked examples 2 key formulas 7 tables 3 diagrams 2 tips 3 warnings

59 exam-style questions in our bank test this topic. This note teaches the theory behind every one of them.

What you will learn

  1. Types of Electric Engines
  2. Stator and Rotor Construction
  3. Bearings, Shafts and Cooling Arrangements
  4. Insulation Materials, Insulation Systems and Protection Classes
  5. Inverters and Engine Controllers
  6. Integration of Engine, Controller and Gearbox
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