Ac Generator

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The turning of a coil in a magnetic field produces motional emfs in both sides of the coil which add. Since the component of the velocity perpendicular to the magnetic field changes sinusoidally with the rotation, the generated voltage is sinusoidal or AC. This process can be described in terms of Faraday's law when you see that the rotation of the coil continually changes the magnetic flux through the coil and therefore generates a voltage. A hand-cranked generator can be used to generate voltage to turn a motor. This is an example of energy conversion from mechanical to electrical energy and then back to mechanical energy. As the motor is turning, it also acts as a generator and generates a "back emf". By Lenz's law, the emf generated by the motor coil will oppose the change that created it. If the motor is not driving a load, then the generated back emf will almost balance the input voltage and very little current will flow in the coil of the motor. But if the motor is driving a heavy load, the back emf will be less and more current will flow in the motor coil and that electric power being used is converted to the mechanical power to drive the load.

Category:

Education

Tags:

• Ac
• Generator

[TheLionRichard]

Is that a robot voice? She sounds like narrator.

[TheLionRichard]

@RJonStreetz Yeah who needs electricity anyway :p

[ekosize]

good...

right animations

[DeathG4n]

Why is the site down? 

[Austinpowers46]

hi i have this tracker works for about 2 or 3 turns then no longer stays in rite place did u have the same problems?

[awaisaimmer]

@acharyazenia hey, slip rings are used in AC generator and split rings ( commutator) are used in DC generators..

[katlh1208]

@acharyazenia slip ring is for ac generator. split ring is for dc motor.

[acharyazenia]

is it split rings or slip rings ? my text says split rings

[RJonStreetz]

This is fucking stupid

[thepathan100]

this laday is too slow