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How do electric motors work?

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Electric motors work by placing the opposite poles of an electromagnet that is fixed onto a spindle or axle near to either end of a fixed magnet. This causes the moving electromagnet to spin slightly then come to a halt. If, at the correct time, the battery or other source of current feeding the electromagnet is flipped - thus reversing the polarity - it will complete another slight spin in the same direction. The repitition of this action provides the movement required to make the spindle of the motor rotate.

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What makes a motor turn is based on the fact that magnetic fields produce physical force that can move things. If you have ever played with magnets you have seen this in action as you use one magnet to attract another magnet or force it to move without touching it, depending on how you line up their poles.

All magnets have a north pole and a south pole. Like poles repel each other and unlike poles attract each other.

So, in a motor, electricity is used to create magnetic fields that oppose each other and cause something to move, which happens to the motor's rotating part, called the "rotor".

On the rotor there are loops of wiring - called "windings" - that have an opposing magnetic field to a magnetic field produced in the housing of the motor that does not move, which is called the "stator". Its magnetic field is produced either, in the case of a very small motors, by permanent magnets or, for most other sizes of electric motor, by loops of wiring called"field windings".

It is the repelling action of the opposing magnetic fields which causes the rotor to turn inside the stator.

In heavy electric motors having field windings, big problems can arise from excessive heat buildup - including a high risk of the motor's windings and/or its power input cables catching on fire - if something ever prevents the rotor from turning whilst it is still being supplied with electricity. If properly-sized circuit breakers are not installed to give the motor adequate overcurrent protection, any general overloading of the motor or siezed rotor shaft bearings can easily cause such problems.

For more information please click on the Related Link below.


Electric motors convert electrical energy to mechanical energy.

Inside the cover of any electric motor there are 2 kinds of magnets:
  • One does not move and is called the "stator".

    On some kinds of electric motors the stator can be a permanent magnet and on others it can be an electromagnet.

  • The other kind of magnet is called the "rotor" because it rotates inside the stator.

    The rotor is always an electro-magnet and when you give it electricity, its copper coils make its metal pieces (which are in the middle of the coils) magnetic.
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If an electric scooter doesn't work can you put a new motor on the scooter and have it run?

try zapworld.com . all have motors for sale. The answer of course is yes. You can change the motor on a non functioning electric scooter. First you will need to check some things. Are you sure the motor is the part that is not working? Could be a reostat that feeds the juice to the motor and so when you put the new motor on it will not work either. A simple question, are the batteries charged? Does the motor receive the amperes it needs to function? Last is it a AC or DC motor that you are wanting to replace? DC will not work on AC and vice versa. Hope this helps. Good Luck.. Lonnie. Questions on GAS scooters? justiceforall@carolina.net

The electric window in your 99 Z71 quit working The cable broke The motor is good What is the assembly called And can you buy it without the motor?

Answer . No you cant replace just the motor. ITs fairly cheap and much easier to replace as one unit. It comes with the motor, cable, and guide rails.

91 Jeep Cherokee Limited it has the electric seatsthe switch works and the motor activates but the seat doesnt move can the gear be changed on the electric motor or does the whole motor need changed?

jag seat same problem I have a broken plastic gear in my seat motor also.. seems silly to buy an entire motor for 170 dollars when a ten cent gear is all i need. where do you get these things..?? Have just stripped my 1991 Jeep Cherokee seat motor assembly, because it has the same problem. There are 3 motors connected by flexible drive shafts into a sealed gearbox. In order to open the gear box you need to drill out all the rivets holding it together. The middle motor drives the forward/back rack assembly. The other two do the front and rear lift levers. In my gear box, the middle motor drives some worm and gear links to toothed racks on each side of the frame. The worm gears are metal and the connecting drive gears are plastic. The plastic drive gear linked to the motor worm gear has lost a number of teeth. I doubt if anyone will supply a replacement gear. I am investigating the possibility of having one made by a local engineering company. If anyone knows of a ready made gear supplier please post their name and phone number.

Toyota Starlet 1993 drivers electric window not working not fuses mavbe electric motor any suggestions?

Window motor i'd say. Both of mine have given up. €270 from Toyota for one, they can be had for £20 from eBay

How does an electromagnet convert electrical energy to make a simple motor work?

for usa test prep In an electric motor, at the moment that the half-turn of the rotor (central electromagnet) completes, the field of this electromagnet it flips if you think about it, if you put two positive or two negative sides of a magnet together what happens? one flips because they aren't attracting

How do motors work?

They use the magnetic field induced by the current carried through loops of wires around the central ferromagnetic axis. These loops are oriented so that the magnetic field applies a torque on the axis, thereby causing it to turn. When an electrical source, (battery) completes a circuit, the electricity powers an electromagnet in the motor that makes it move (usually spin) in a certain way.

How can I obtain the electrical wiring diagram of an MCC Motor Control Centre for two motors that work cyclically one at a time with automatic control?


Why has your auto washer electric motor stopped working?

Answer . \n1 The pump is clogged and the motor can't start up. Most new energy efficient dishwashers are now fitted with very small motors with no get up go.\n2 kill the breaker and pull an inspection. try to turn the motor - OK. Ok - Not more than a dozen other causes to look at now. Get the model number ready and search for "Appliance repairs". There you will find some very helpful help.

What do electric motors do?

Answer . An electric motor is a device which converts electrical energy into mechanical energy in order to do work.

What is an electric motor?

An electric motor uses electrical energy to produce mechanical energy. The reverse process, that of using mechanical energy to produce electrical energy, is accomplished by a generator or dynamo. Traction motors used on locomotives and some electric and hybrid automobiles often perform both tasks if the vehicle is equipped with dynamic brakes. Electric motors are found in household appliances such as fans, refrigerators, washing machines, pool pumps, floor vacuums, and fan-forced ovens. They are also found in many other devices such as computer equipment, in its disk drives, printers, and fans; and in some sound and video playing and recording equipment as DVD/CD players and recorders, tape players and recorders, and record players. Electric motors are also found in several kinds of toys such as some kinds of vehicles and robotic toys. An electric motor converts electrical energy into mechanical energy. Most electric motors operate through interacting magnetic field and current carrying conductors to generate force but a few use electrostatic forces.

What is the purpose of a commutator in an electric motor?

A commutator applies power to the best location on the rotor, and in a generator, picks off power similarly.

What safety precautions are necessary when working with an electric motor?


Is there a way to raise window on car if switch is ok but electric motor does not work?

Yes,. Press against the window from the inside and the outside and slowly "walk" it closed.. Yes,. Press against the window from the inside and the outside and slowly "walk" it closed.

If a Ford Puma headlamp levelling motor is not working is it likely to be a problem with the electrics or the motor itself?

Based on previous repairing of mine, it could be that the contact inside has worn away. It is a metalic strip, when it gets to the top / bottom the motor stops. I found mine was worn half way down

Passenger side electric window wont go up but the motor works on an f150supercrew?

I'm working on the same problem on my 94 F150..went to U tube and found how to remove door panel and "window regulator". While replacing the window regulator would probably solve my problem I think there is a simpler answer since my motor works and I can get the window to jog up a little if I work at it then I can grab it and assist it up by pulling up and using up switch. I'm going to pull the panel and see what is going on. Check out U-Tube

How does motor work?

The engine works when the fuel is pumped to the wheel. The fuel liquid becomes to gas!

How a current limit starter works for an electric motor?

\nit consists of a series of resistances, a magnet and a bar that is pulled by the magnet. Initially all the resistance comes in series so the current is limited. when the bar is pulled towards the magnet slowly the resistance decreases and the current increases. thus it protects the DC motor from initial high current.

How does the electric motor in a hair dryer work?

I don't know how it works but I know how it heats up: there are metal coils in the hair dryer that heat up, so hot it can toast, toast! Then, a fan turns on and blows warm air.

How do you calculate the phase current when working with a 10kw 3 phase electrical motor?

The 3 phase formula you are looking for is I = HP x 746/1.73 x E x% Eff x pf. Where I = amps, E = voltage, %Eff = percent efficiency of the motor and pf = power factor.

How are electrical generators and electrical motors different?

The basic difference between an electrical generator & electrical motor is the conversion of energy. Principally, in case of electrical generator the mechanical energy (steam, water, wind) is converted into electrical energy whereas in case of electrical motor the electrical energy is converted into mechanical energy. Electrical generators are used for generating electrical power while electrical motors are used to consume electrical energy to do some mechancial work eg. pumping water, moving elevators etc. well the above answer provided by another fellow engineer In generators though we provide mechanical energy we need to energize the field and of course we've self excited generator. where as in motors (AC) we provide suppy to the stator itself and suppy will be induced in rotors to get rotation in DC stator and rotor is connected either in series or shunt. collectively we provide suppy to it

Can an electric motor work without a magnet?

Most electric motors require magnet to operate on the principal ofattraction. A motor can operate without any permanents magnets byreplacing the with another coil of wire.

What electric motor does an electric car use?

A electric car uses either a DC or AC motor. Typically they use DC motors.

How does a electric car motor work?

Simply as the clock move it also produce motion by the power of the battery. In electric car the is a storage as battery that store the charge and when the car require it it acceleration to it

How you test the electric motor that it produces electricity?

Electric motors do not produce electricity, they use electricity, and convert that energy to another form of energy, that we measure in horsepower.. See related links.

Which electrical wires bring electricity to an electrical device or motor?

which electrical wires bring electricity to an electrical device or motor . The cable, otherwise known as the flex or the lead.

What is the differences between the way electric motors work and the way generators work?

Generators change mechanical power to electrical power. Motors change electrical power to mechanical power. Permanent magnet dc motors and generators can usually work either way.

If magnetic compass does not work on moon Why electric motor work on moon?

A magnetic compass does not work on the moon because the moon has no magnetic core to generate the north and south poles like the earth. As a result, there is no pole for the magnetic compass with which to point. . An electric motor, however, works on the moon because the motor generates both magnetic fields necessary to induce force.

Driver side electric window fell into door motor works but no window?

"Fallen" Car Windows . That condition means that the mechanical connection between the window and the lift drive motor has become disconnected . . Different vehicles, and even different year models of the same vehicles, use different methods to make this connection. . All of the "old" vehicles use "arms," some newer ones use flexible "ladders" [metal or plastic], and some of the late models use small woven wire cables to lift the windows.

How an electric motor from electric generator?

Electric motors take electric energy and turn it into kinetic energy Generators and alternators take mechanical energy n turn it into electric energy

How do electrical generators and motors work?

The princible is very simple: "Whenever the current carrying coil placed in the magnetic field, the coil will experience the mechanical force"

How do you turn an electric motor into an electric generator?

The simple answer is: You start with a motor with permanent magnets and then simply turn the output shaft by hand and you will get current from the power input of the motor. However, there are AC and DC motors. Whether you are using a DC motor to charge a battery or an AC motor to power a tool, you will need to turn it at a precise speed to get results. Specially with AC, because you need to worry about frequency (60 hertz ). You also must turn it in reverse. Maybe somebody can expand on this answer.

What is the definition of an electric motor?

A machine that takes electrical energy and transforms it into mechanical energy to perform work (work is measured in Watts)

Are motor neurons an electrical synapse?

no,motor neurons are not electrical synapse but are normal nerve cells.they help in transmission of electrical impulses from the site of stimulus towards the spinal cord.the impulses have to travel and cross certain spaces or junctions between two consecutive nerves,the axon bulb of one to dendrites of next neuron.

Neither rear electric window on your o3 Honda crv works there is no sound from the motors?

The power windows are all on the same circuit, so it probably is not the fuse. Check to see if your CR-V is equipped with a rear window safety lockout, that the driver can activate, to prevent kids from operating them and check to see if the switch is in the proper position. If it is, then my next suggestion would be to check to see if the wires leading into th doors have not been pinched or cut or shorted in some way.

Making electricity from wind with motor?

the wind mills rotate and the electric generator fixed in the mill converts mechanic energy into electric energy by the principle of electromagnetic induction

How does an electrical motor in an electrical scooters work?

just synopsis to explain either its AC or DC motor there exsist a battery for power supply, ac can be generated using a inverter circuit and iginition is at key accelerator is a potentio-meter by which you can contorl the supply to the motor better google it for more precise explanation . It depends on the type of electric motor. The most common is a DC motor with brushes. In this type of motor, a battery supplies an electric current through a coil of wire inside the motor housing. This coil of wire is called the rotor. When you run a current through a wire, it induces a magnetic field. Surrounding the rotor, are permanent magnets and these make up the stator. So when your electric current creates a magnetic field, the rotor wants to spin to align itself with the magnetic field created by the permanent magnets. As the rotor spins, a device called a commutator reverses the direction of the electric current. When this happens, the magnetic field that the coil of wire produces reverses polarity ( North becomes South and South becomes North). So now the rotor spins again to realign with the magnetic field. This is repeated over and over to keep the rotor spinning.

How does electric servo motor brake work?

break is connected with parallel to motor winding if the brake is d.c. is supply it must be connected with rectifier unit,when motor in ideal position the brake holds the shaft which is connected with gear and when motor starts the break coil will energise and motor shat became free and motor will run like this brake work

Can an electric motor be made to generate electricity?

For some kinds of electric motors - not all kinds - the answer is yes. It is hard to explain the reasons using very simple terms, but here goes: Most small direct current electric motors that have stators which are made of permanent magnets can be made to generate direct current electricity when their rotors are turned at a fast enough speed by another engine, such as, for example, a car engine or a steam engine. . For more information see the answer to the Related Question shown below.

How test electric motors?

The best way to test a motor is by doing a megger test. On the whole megger testing is non destructive. What happens is a DC voltage is applied to the motor's windings. It is an insulation test to see is the insulation has been injured in any way to cause a short circuit when normal power is applied to it. On my megger there are 3 ranges 300V, 750V, and 1000 volts. Applying the proper voltage is essential to not damaging the device you are testing. Working voltages up to 240 volts should use the 300 range. Working voltages up to 600 volts use the 750 volt range and working voltages above 600 use the 1000 volt range. As you can see if you used the 1000 volt range on a device that had a working voltage of say 24 volts you could damage the insulation just by testing it. So meggering a device is non destructive if you use the tester as its instructions tell you to.

How is electricity used in a motor?

In a permanent magnet motor, electricity is used to create an opposing magnetic field to the one existing due to the magnet. This creates a force that causes the motor to spin. In a motor without a permanent magnet, electricity is used to create two opposing magnetic fields.

How does an electric motor fan work?

An electromagnet is the basis of an electric motor. You can understand how things work in the motor by imagining the following scenario. Say that you created a simple electromagnet by wrapping 100 loops of wire around a nail and connecting it to a battery. The nail would become a magnet and have a north and south pole while the battery is connected. Now say that you take your nail electromagnet, run an axle through the middle of it and suspend it in the middle of a horseshoe magnet as shown in the figure below . If you were to attach a battery to the electromagnet so that the north end of the nail appeared as shown, the basic law of magnetism tells you what would happen: The north end of the electromagnet would be repelled from the north end of the horseshoe magnet and attracted to the south end of the horseshoe magnet. The south end of the electromagnet would be repelled in a similar way. The nail would move about half a turn and then stop in the position shown. You can see that this half-turn of motion is simply due to the way magnets naturally attract and repel one another. The key to an electric motor is to then go one step further so that, at the moment that this half-turn of motion completes, the field of the electromagnet flips . The flip causes the electromagnet to complete another half-turn of motion. You flip the magnetic field just by changing the direction of the electrons flowing in the wire (you do that by flipping the battery over). If the field of the electromagnet were flipped at precisely the right moment at the end of each half-turn of motion, the electric motor would spin freely.

How does the centrifugal switch work in a single phase electric motor?

In a single phase electric motor, the centrifugal switch allows the start winding to be energized through the start capacitor when the motor is starting. This gives an out of phase magnetic field that, along with the in phase magnetic field from the run winding, helps the rotor to begin spinning. Once the rotor reaches a certain speed, the centrifugal switch changes state and cuts off the start winding. At that point, the motor continues running only through its run winding, and inertia keeps the rotor properly phase biased relative to the run winding's magnetic field.

How are electric generators different from electric motors?

They both use the same parts, but work differently in the way electricity is applied to them. The basic components of each are a stator (stationary part), a rotor (rotating part), and a wire coil. In an electric generator, the rotor is mechanically driven by an armature and has a wound wire coil around it. The stator in a generator contains permanent magnets, and when the coil spins around them, it generates voltage, which is conducted to a battery or other device. In an electric motor, electricity is applied through the stator to force the rotor to spin. When a section of the stator is electrified, it produces a positive magnetic charge, which attracts the rotor and forces it to turn toward that part of the stator. The magnetic charge in the stator moves to each section, causing the rotor to follow it at high speed.

Would aluminum on a simple electric motor work?

If you are referring to the use of aluminium windings, instead of copper windings, then the answer is yes. However, because aluminium has a higher resistivity than copper, to produce the same rating as a copper-wound machine, the aluminium conductor would require a slightly larger cross-sectional area, which means that that the machine would be somewhat larger.

Is steper motor can work without electrical energy?

The correct name is Stepper motor, or Step motor. No, the whole idea lf the Stepper motor is that it works with electricity. Also, the whole idea of motors is to convert energy, so it must use SOME type of energy.

What electrical devices use an electric motor?

fans, air conditioners, some ovens, hair dryers, computers, space heaters, microwaves, some freezers, projectors, amplifiers, dvd-s, blenders, cd players, VCR-s, printers, scanners, washing machines and dryers, electric lawn mowers, grass trimmers, drills, electric saws, turn tables, And i can't remember anything else, hope i helped.

Can a motor works as a dynamo I'mean produce electricity?

No because it requires excitation case of dynamo it has already permanent magnets it doesn't require any excitation but in Motor we cant,

How does a contactor work on an electric motor?

With a contactor we can control the power connection to the motor (power on/off). A typical AC contactor comes with 4 terminals aside (L1,L2,L3,A). 'A' has A1,A2 terminals which are of the magnetizing coil. By magnetizing & demagnetizing A1-A2 coil, power line connections to motor can either be made or broken. This is a simple DOL (Direct On Line) application. Further, reverse/forward circuits and star-delta circuits can be constructed based on the requirement. A contactor's role in whatever application is 'making or breaking' the contact. The coil supply can either be AC or DC.

What is the working principle of an electric motor?

The electric motor is a device that converts electrical energy tomechanical energy. There are three main types of electric motors: 1) DC Motor 2) Induction Motor 3) Synchronous Motor. All of these motors work under more or less the same principle. TheWorking of an electric motor mainly depends upon the interaction ofmagnetic field with current. Now we will discuss the basicoperating principle of electric motor one by one for betterunderstanding the subject. The operation of an electric motor is based on the principle thatwhen a current-carrying conductor is placed in a magnetic field, itexperiences a mechanical force whose direction is given byFleming's Left-hand rule and whose magnitude is given by: Force,F =B I l newton Where B is the magnetic field in weber/m2. I is the current in amperes and l is the length of the coil in meter. The force, current and the magnetic field are all in differentdirections.

How does an electric fan motor works?

In the simplest design, there are only two parts to consider. TheArmature, and the Stator. The armature is the part that revolves,and the fan blades are attached to its shaft. It is made of apermanent magnet. The stator consists of copper windings thatconduct electrical input (AC) and generates a rotating magneticfield. Once the stator's magnetic field is established, it repels themagnetic field of the rotor, which pushes it into rotation. Thespeed of the field's rotation dictates the speed of the motor. The are more types of motor that can be used, and they operatedifferently, but this is a very basic type.