Black and White Left Arrow

Principle of Electric Motors

(GTU Solution)

5. How does an Induction Motor Works? [2 Marks]

//Question is about how motor experience the force and start rotating when supplied by 3Phase AC

// Need not to explain theory about how rotating magnetic field produced as asked in only two marks.

When three phase AC voltage is supplied to mechanically 120 degree apart placed three phase winding, rotating magnetic field will produced.

When this rotating field linked with short-circuited rotor bar conductors, an emf and thus current will be induced in it.

Thus, conductors will experience a force and rotor will start rotating in the same direction of rotating magnetic field.

6. Why this motor called as an “Induction Motor”? [2-3 Marks]

//Question concentrates on word “Induction” attached with motor name

Here rotor current produces by an induction effect and needs not to supply any external source to produce it.

//This is not enough for 2-3 marks so let’s add something more

When three phase AC voltage is supplied to mechanically 120 degree apart placed three phase winding, rotating magnetic field will produced.

When this flux linked with short-circuited rotor bar conductors, an emf and thus current will be produced in it.

Thus, conductors will experience a force and rotor will start rotating in the same direction of rotating magnetic field.

This is why this motor named an “Induction Motor” as principle of electromagnetic induction is utilize to eliminate requirement of external rotor supply.

Electrical Engineering | Power Electronics | Electric Vehicle | Electric Drive | Power System | Electrical Machine | DC Circuit | AC Circuit | Control System | Digital Circuit | DC Machine | Transformer | AC Machine | Induction Motor | DC Motor | AC Motor | Artificial Intelligence | Neural Network | Fuzzy Logic | MATLAB | Simulation | Arduino | Projects | Hardware | Analog Circuit | Digital Circuit | Microcontroller | Sensors | PLC | GATE |Quiz | Paper

  • Facebook

Copyright©Rhyni - Tech Skills & Fundamentals 2020