Tagged Questions
0
votes
1answer
148 views
What is this equipment called?
In this video at 0:40, what is the equipment he is using to power the motor? It seems to be some sort of torque leveraged device (forgive my ignorance).
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0
votes
1answer
266 views
What's the best method for generating 5V at 2A?
I'm trying to make a crank DC charger. I understand the voltage regulation circuitry and (if needed) the bridge rectifier circuitry, but I'm still a total noob. I'm wondering what is the ...
5
votes
3answers
865 views
Explanation for Differing Stator Winding Orientations
As a layperson, I'm trying to understand the basic configuration for an induction motor or generator. I've looked at many diagrams and photos/cutaways of stator wiring and I've noticed two different ...
3
votes
3answers
405 views
What is the slip factor for an induction generator in an island network?
Most textbooks covering induction machines cover only the motor use-case scenario. When the machine is used as a motor, the slip factor is determined by the frequency of the stator current by the ...
3
votes
2answers
193 views
Which parts of this rotor can be made out of plastic?
I'm asked to redesign a rotor, by making as much parts of it as possible out of plastic. The issue is its weight, we want to make it as light as possible. Especially the shaft & axis of it is the ...
3
votes
2answers
239 views
why electric motor or alternator have stack of plates?
i have noticed that all of the transformer/motor/alternator/electric actuator have a stack of metal for stator ( or where winding is done. ). why is that needed ? can same thing not achieve by using a ...
3
votes
2answers
3k views
What is back-emf: counter-electromotive force?
Could someone knowledgeable on the subject explain what exactly is this back emf? How is it caused in a motor/generator, which components and which effects determines it?
Thanks
