How Does a 3 Phase Induction Motor Work Without Powering the Rotor Directly?
Long-form11:33Education
Published Aug 14, 2026, 3:30 PM · 2mo ago
LifeAda
1.3M subscribers · median 186K views
Animation · confirmed$Likely
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Description
3 Phase Induction Motor
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About Video:-
a 3 phase induction motor can rotate at high speed even though its rotor does not receive any direct electrical supply. in this video, the complete working principle of a three phase induction motor is explained through simple concepts and detailed 3d animation.
the video explains how three phase ac supply creates a rotating magnetic field inside the stator. it also shows how this magnetic field cuts the squirrel cage rotor bars and induces emf and current in them. according to lenz’s law, the induced magnetic field opposes the reason that created it, producing electromagnetic torque and making the rotor rotate.
you will also understand stator winding arrangement, coil span, motor poles, synchronous speed, rotor speed and slip. the video explains why an induction motor rotor can never reach synchronous speed during normal motor operation.
the causes of high starting current, rotor locking and humming noise are also covered. finally, the video explains wound rotor starting and the star-delta starting method, including star and delta winding connections, motor terminals and the reason a motor initially starts in star connection before changing to delta connection.
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topic covered in this video:-
construction and working of a 3 phase induction motor
generation of rotating magnetic field
squirrel cage rotor working
electromagnetic induction in rotor bars
electromagnetic torque generation
faraday’s law and lenz’s law
synchronous speed and rotor slip
stator winding, slots, coil span and motor poles
rotor locking and high starting current
wound rotor and star-delta starting methods
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Reference video:-
Submersible pump - https://youtu.be/OSou7RZsu4s
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About Me -:
Name - Harish
Qualification : Electrical & Computer Engineer
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Tags
induction motor3 phase induction motorrotating magnetic fieldsquirrel cage induction motorwound rotorstart delta connection
Details
- Published
- Aug 14, 2026, 3:30 PM
- Length
- 11:33 (693 s)
- Format
- Long-form
- Category
- Education
- Audio language
- HI
- Quality
- HD
- Captions
- No
- Made for kids
- No
- Licensed content
- Yes
- Video ID
- QBSmFxO6PZM
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