Just like a bear, daily, but not by choice. I have to get rid of the garbage from
the business that way. Only in July and Aug.
Just think of all the stuff you miss during the other months of the year!
Not sure if this applies so take it for what it's worth. I may be comparing apples and elephants here.
How Everything Works
When the generator armature first begins to spin, there is a weak residual magnetic field in the iron pole shoes. As the armature spins, it begins to build voltage. Some of this voltage is impressed on the field windings through the generator regulator (commonly called the VOLTAGE REGULATOR, explained in the next article). This impressed voltage builds up a stronger winding current, increasing the strength of the magnetic field. The increased field produces more voltage in the armature. This, in turn, builds more current in the field windings, with a resultant higher armature voltage. This voltage could, of course, continue to increase indefinitely, but it is limited (by regulation) to a pre-set peak. At this point all this sounds like perpetual motion, doesn't it? Remember, though, that the energy driving all this is the engine's crankshaft!
Study the illustration and familiarize yourself with the generator's parts. It should be noted that the most common failure of a generator is the brushes. Second to that is bearing failure, especially the bearing next to the drive pulley (improper belt tension hastens the demise of this bearing!)
A major failure-mechanism in generators is improper installation of a new or rebuilt one. Mechanically, the installation is straightforward but electrically, things are more complex. When the generator stopped the last time, residual magnetism remained in the pole shoes. The polarity of the shoes at that time depended on the direction of current flow in the field coil windings. If - during testing and rebuilding - current is caused to flow in the opposite direction, the pole shoes will change polarity. If the generator is then run in the car, the reversed polarity will cause current to flow in the wrong direction, damaging the regulator and discharging the battery when the car is left overnight. Therefore, all generators must be polarized after installation and before running the car. This is done by holding one end of a wire on the "battery" terminal of the regulator and scratching the other end against the generator's output terminal (for externally-grounded generators). For internally-grounded generators the proper way to polarize is to disconnect the "field" lead from the regulator and scratch it on the "battery" terminal on the regulator.
Suppose if a windmill is made to rotate in clockwise direction and due to air flow if it rotates in anti clockwise direction then does it produce electricity?
This depends on the specifics of the design... One can certainly create generators that don't care which way they are rotated, and the simplest generator design (just a magnet and a coil) works either way. Although it might take energy out of the grid rather than add it. But I'd have to guess, based on no particular knowledge, that a real windmill would be very unhappy if you forced it to rotate the wrong way. – BebopButUnsteady