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DC Machine Basic Principle:
What key law explains how a DC machine works (both motor & generator)?
DC Motor Operation:
How does a DC motor produce rotation?
DC Generator Operation: How does a DC generator create electricity?
DC Motor Types:
What are the 3 main DC motor types and their characteristics?
Back EMF:
What is back e.m.f. in a DC motor?
DC Machine Common Uses
AC Motor Basic Principle:
What is the fundamental principle behind all AC motors?
Three‑Phase Induction Motor:
Why are 3‑phase induction motors self‑starting?
Squirrel Cage Rotor:
What is special about squirrel‑cage rotors?
Wound Rotor Machine:
What advantage does a wound‑rotor induction motor have?
Single‑Phase Motor Issue:
Why is a single‑phase induction motor not self‑starting?
Capacitor‑Start Motor:
What does the capacitor do in a capacitor‑start motor?
Shaded‑Pole Motor: What is the operating principle of a shaded‑pole motor?
AC Motor Common Uses:
Where are AC motors most commonly used in electrical installation?
Motor Starters & Control:
What is a DOL starter used for?
Star‑Delta Starter:
Why use a star‑delta starter?
Soft‑Start / Variable Frequency Drive (VFD): What does a VFD allow?
