Why does an electric motor spin?

Question

Include these words: north pole, south pole, induced magnet, perminant magnet, attractional force, repulsion force, battery, voltage, electric energy, kinetic energy, rotation, spin, electric current, polarity, transfer of energy, wire insulation, electrical contact, and circuit. MY TEACHER IS SOOO CRUEL!!!

Answer 1

You know, I can answer this question, I know all about it. I just don't know how to explain it!



The rotor of a motor, the part that spins, has a number of magnets mounted in a cylinder that spins on a shaft. The magnets are mounted so that their poles point out radially from the shaft, and as you go around the outside the poles alternate N, S, N, S, etc.



Around this rotor is the stator, the part that remains still. On the stator are a series of coils that act like electromagnets (induced magnets) when current flows through them. They are also powered back and forth, N, S, N, S, as you go around the inside of the stator. They are just far enough from the magnets of the rotor that they don't interfere with its rotation.



Now as the motor is turning, one of the poles of the rotor is between two differently-charged coils of the stator. It is repelled by the one that's charged the same and attracted to the one that's charged differently, by the attraction and repulsion forces of magnets. But just as it passes the next pole of the stator, the current in the stator reverses so the pole of the rotor is now attracted to the next pole of the rotor.



Now on the end of the shaft of the rotor is a cylinder made up of contacts separated radially (that is, with lines coming out from the axis of the shaft) That's the commutator. Stationary sliding contacts ('brushes') go against this wheel of contacts, and as the rotor rotates, these sliding contacts cause the current to reverse at just the right timing to keep the motor going.



A motor converts electrical energy into kinetic energy, mechanical energy.

Answer 2

A motor has two key parts; an electromagnet and permanent magnets. Depending on the construction of the motor, the electromagnet is on the rotating part and the permanent magnet is on the fixed part, or visa versa. The electromagnet is energized so it has a North and South pole. This makes the electromagnet attracted to the opposite poles of the permanent magnet and will move the moving part of the motor to get to them. When it does, the polarity of the electromagnet is changed, making it move again. It's like an electric version of "keep away".

Answer 3

"Electric energy" is a sloppy term used in public utilities to mean connectivity.



"Kinetic energy" is an accounting gimmick used to analyze mechanical exchanges in physics.



"Transfer of energy" is the definition of heat, which is an undesired side effect of an electric motor.



"Energy" is not a physical unit, it is a philosophical concept. In nuclear physics energy is defined to be a color of light.



All the rest of those words are valid and you should have learned what they mean a long time ago. If your class is into motors, that means you are about five weeks behind. Talk to your teacher about dropping the class.

Answer 4

as some others have mentioned you won't be able to develop the fee with voltage on my own. you will elect a capacitor so as that a factor is created. they have 2 uncomplicated styles of capacitors a "initiate capacitor" and a "run capacitor", in spite of the shown fact that a beginning capacitor is purely used at motor initiate and can basically stay interior the circuit till approximately seventy 5% of the autos torque is reached then it is going to drop out with the aid of the two a centrifugal swap or something such as it. the working capacitor is made up of metallic and continues to be interior the circuit the great time. an uncomplicated thank you to tell the version between the two capacitors is relatively in there visual charm. run caps. are greater suitable and made up of metallic the place initiate caps. are made up of plastic and are approximately 3/4 the dimensions of the run cap. motives for the version in visual charm are especially straightforward. with the aid of fact the run continues to be interior the circuit it has to expend warmth therefor it somewhat is wise to apply metallic and for it to be somewhat greater suitable in length. the beginning up cap. continues to be basically momentarily therefor why use a greater high priced development fabric while one is relatively no longer mandatory.