what carries current from the commutator to the auto electrical system?
481562
You did not specify which commutators you are talking about. The starter has commutator bars and also the alternator more commonly referred to as slip rings are in contact with brushes. Brushes are what actually carry the current from the slip rings to the post on the back of the alternator.
866700
electricity produced due to flow of charges/electrons
351810
The thermostat is a heat sensor. The commutator is part of the rotor. The brush spring keeps constant pressure on the brush against the rotor, \nThat leaves.... the relay.\nIn small motors a centrifugal switch is used. It's mounted on the rotor shaft. When it reaches speed, the outward force opens the switch and disconnects the start windings.\nIn larger motors like 100 horse power and up, a "part winding start" can be used. Only a small part of the windings are used to start the motors. The starter box has a timer that triggers a relay that engages the rest of the windings when the speed is up.
888374
Conductors allow electricity to flow through them with little resistance.  Resistors resist the flow of electricity.
122327
ELECTRICITY FLOWS IN TWO WAYS, AC & DC.\n\nAC flows alternatively (back and forth between + and -)\n\nDC flows directly (across + and -)
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Electricity and magnetism are closely related.  When a current goes through a wire, it creates a magnetic field around the wire.  Similarly, if a magnetic field is moved past a wire, it can induce a current.\n\nA generator spins a magnet past a series of coiled wires, inducing currents in them.  Generators and alternators both work in this way.  The difference between the two is that in a generator, the current always goes in the same direction, while in an alternator, it switches directions due to the fact that the polarity of the magnet changes as it rotates.\n\nGenerators always produce Direct Current (DC current), while alternators always produce Alternating Current (AC current).\n\nThe difference in nuclear, steam, coal, oil and hydroelectric powerplants is simply in how the rotation of the generator is produced.  The generators work in exactly the same way in each case.\n\nSolar power is different.  In the case of solar power, the current can be generated in one of several different ways.  These are more complicated, however, and I don't know the specifics of how they work.  Sorry.
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Current drops as the resistance increases. Think of it as a road. As the road gets narrower (resistance increases) the less cars will pass per minute (current decreases)
532709
the minimum current needed to cause the thyristor to latch/switch state
283695
the transient current, as an example is the starting current for a DC machine to work, when voltage is applied  to a DC motor it draws high current due to the low starting resistance.. after the machine gains speed the resistance of the motor increases, and so the current returns to its stable value..\nTo  avoid any damage to the machine due to the high current, a starting resistance is added to the circuit in order to lower the starting current, the starting resistance is designed to be disconnected as the speed of the motor increases.
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Induction. \n\nWhen you wind a conductive wire into a coil and pass a current through it, you create a magentic field that extends from the coil.  Similarly, if you hold/move a coiled wire in a magnetic field, you "induce" a current flow in the coil.  With AC, there's no need for the coils to move relative to one another. (That's how a transformer works)  The toothbrush base has a coil in it, and the AC coming out of the wall goes through a coil in the base, induces current in the coil in the toothbrush, and that current charges a cell in the handle.\n\n Here are some neat links:\n\nhttp://www.energyquest.ca.gov/how_it_works/transformer.html\n\nhttp://micro.magnet.fsu.edu/electromag/java/faraday2/
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AC in and DC out.\n\nA diode only allows current to flow in one direction and blocks it if it is wrong.\n\nthe diodes in the bridge are connected together so that the +V current flows in One direction. the bridge .....( I cant be bothered)\n\nwikipedia has the answer...\n\nhttp://en.wikipedia.org/wiki/Bridge_rectifier
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Limit the load current.\nEDIT: This is often done by adjusting the stator field current if it's a generator with an electromagnet (not permanent magnet) field.
584857
A generator produces a current by moving a wire through a magnetic field.  If you had an infinitely large magnetic field, you could move in one direction forever and produce a dc current.  However, it isn't practical to do that.\n\nInstead, you put a ball of wire inside a much smaller magnetic field and you spin it.  The ends of the wire have to be touching something to complete the circuit so electrons can flow.  At one part of the circle, the wire is moving left to right across the magnetic field and causes electrons to flow in one direction in the wire, in another part of the circle, the wire is moving from right to left and the electrons flow in the opposite direction.  This is what causes the current to alternate.\n\nSo, when converting motive energy into electricity, ac current is the easiest to produce.  This is like what is produced by a car's alternator or a hydro-electric plant.
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From electricity...the term alternating current/direct current.
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Alternators generate electricity by the same principle as DC generators, namely, when the magnetic field around a conductor changes, a current is induced in the conductor. In a typical modern alternator, a rotating magnet called the rotor turns within a stationary set of conductors wound in coils on an iron core, called the stator. The field cuts across the conductors, generating an electrical current, as the mechanical input causes the rotor to turn.\n\nThe rotor magnetic field may be produced by induction (in a "brushless" generator), by permanent magnets (usually in very small machines), or by a rotor winding energized with direct current through slip rings and brushes. Automotive alternators invariably use brushes and slip rings, which allows control of the alternator generated voltage by varying the current in the rotor field winding. Permanent magnet machines avoid the loss due to magnetizing current in the rotor, but are restricted in size, owing to the cost of the magnet material. Since the permanent magnet field is constant, the terminal voltage varies directly with the speed of the generator. Brushless AC generators are usually larger machines than those used in automotive applications.
684559
A self sufficient solar driven electric car. It will never need recharging. The source of power will come from the solar paint, braking system, tires and aerodynamic wind turbines under the car.\n\nAnd a optional magnetic drive engine!
744305
Stray voltages/currents between grounded metal parts is caused by a difference in resistivity. Usually, it is because the ground rod has a greater resistivity than the metal parts connected to the water/drainage/gas system.\nAgain as has been said on other occasions in this forum, Ohm's Law comes into play..... Current is equal to voltage divided by resistance. So if there is a differing resistance between the two systems AND there is a low resistance path betweeen the electrical wiring and earth on an appliance, current will flow (continuously) to the frame of the appliance and to ground. So if current is flowing to ground and the appliance ground has a higher resistance to earth than the ground of the adjacent metal parts there will be a difference in potential between the two. This is often felt as a tingling sensation --- The reason why it doesn't trip the breaker is that the current flow is lower than the trip setting of the ELCB (earth leakage circuit breaker). It does not have anything to do with "Back EMF" back EMF is the voltage generated in a dc motor that limits the amount of current that can pass through the armature windings.......\n\nIf you have this problem, GET AN AUTHORIZED ELECTRICIAN TO INVESTIGATE AND CORRECT THE PROBLEM IMMEDIATELY. It certainly is a dangerous situation that can cause death.\n\nSource: Electrical Engineer (ret) with 45+ yrs experience.