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the reason for brushes is to makethe motor revolve. The more brushes probably make a more powerful starter motor
"Induction" motors imply AC power Most AC motors do not have brushes or commutator If your motor does have brushes, a lot of sparking where the brushes meet the comutator is a good indication that it needs to be cleaned and/or "cutdown". If your motor does not have brushes, then you have more serious trouble. Need more details
yes
There no brushes in an induction motor. The rotor is independent and is a short-circuited cage of parallel bars.
leave the brushes of the motor at the position where the induced voltage is zero
Assuming you mean electric motors, the causes for failure include seized bearings and worn brushes. If the bearings or bushings are seized, the motor may fail. Most electric fans have thermal fuses, so if the motor seizes and overheats, the fuse blows. If the brushes are worn, then the motor is no receiving electricity and thus cannot turn.
Its not worth replacing the starter motor brushes on any car. By the time the brushes are worn, there is probably other wear and tear to the bearings, the commutator, and the windings. Better to just replace the starter. Same deal with the brushes in an alternator.
the brushes in the motor are worn. If you are handy, some auto parts stores sell brushes that will fit the motor. You may have to grind them down just a bit to get them to fit, as well as solder the wires in place. A new motor was $130 for my 2001 Chryslet Town and country. I had an old drill I sacrificed and removed the brushes and did it for the cost of an obsolete drill.
They work independent of each other in this situation. Your blower motor may be worn,(brushes worn). I would take a test light to the hot lead at the fan motor to see if there is power to it ;if there is, that tells you the motor is shot.Get yourself a new blower motor if that is the case.
The blower motor is beginning to fail. Bearings, bushings, or brushes are probably worn.
Motor brushes ride one the commutator.
Carbon
The normal number of brushes is 2.
the reason for brushes is to makethe motor revolve. The more brushes probably make a more powerful starter motor
Carbon is much stronger and because the motor commuter is spinning copper brushes will wear off quickly.
All motors are made up of 2 basic parts, a coil or coils of wire, and two or more magnets. the motors found in cars and car windows contain dc motors that use a pair of brushes to make contact with the coils that in turn drive the magnet. as u continually use the motor, the brushes are worn away due to friction, once the brushs no longer make contact with the commutator (the copper plates where the brushes come in contact with the coils) the door motor with stop working as no current is able to pass through the motor. you either have to get the brushes replaced, or replace the motor entirely
The bushings and/or the brushes are worn on it.