Phase 9: Electric Motors

This phase contains 6 sections and 45 checklist topics. Use the interactive phase page to track your own learning progress.

General topics

  • Electrical energy → mechanical energy
  • Torque
  • Speed
  • RPM
  • Frequency
  • Motor current
  • Motor voltage
  • Efficiency
  • And 1 more checklist topics

Construction

  • Stator
  • Rotor
  • Shaft
  • Bearings
  • Cooling fan
  • Terminal box

Three-phase induction motor

  • Rotating magnetic field
  • Synchronous speed
  • Actual speed
  • Slip
  • Rotor current
  • Torque
  • Starting current

Single-phase motor

  • Main/running winding
  • Starting/auxiliary winding
  • Capacitor
  • Starting problem
  • Capacitor-start motor
  • Capacitor-run motor
  • Fan example

Motor types awareness

  • Induction motor
  • Synchronous motor basic
  • Servo motor
  • Stepper motor

Motor nameplate

  • Rated voltage
  • Rated current
  • kW
  • HP
  • Hz
  • RPM
  • PF
  • Efficiency
  • And 4 more checklist topics

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