How does the dyanmo work?

Answer 1

The Dynamo was the first electrical generator capable of delivering power for industry. The dynamo uses electromagnetic principles to convert mechanical rotation into an alternating electric current. A dynamo machine consists of a stationary structure which generates a strong magnetic field, and a set of rotating windings which turn within that field. On small machines the magnetic field may be provided by a permanent magnet; larger machines have the magnetic field created by electromagnets.

The first dynamo based on Faraday's principles was built in 1832 by Hippolyte Pixii, a French instrument maker. It used a permanent magnet which was rotated by a crank. The spinning magnet was positioned so that its north and south poles passed by a piece of iron wrapped with wire. Pixii found that the spinning magnet produced a pulse of current in the wire each time a pole passed the coil. Furthermore, the north and south poles of the magnet induced currents in opposite directions. By adding a commutator, Pixii was able to convert the alternating current to direct current.

Unlike the Faraday disc, many turns of wire connected in series can be used in the moving windings of a dynamo. This allows the terminal voltage of the machine to be higher than a disc can produce, so that electrical energy can be delivered at a convenient voltage.

The relationship between mechanical rotation and electric current in a dynamo is reversible; the principles of the electric motor were discovered when it was found that one dynamo could cause a second interconnected dynamo to rotate if current was fed through it.

Answer 2

All dynamos work by moving wires across a magnetic field. Moving a conductor across a magnetic field induces a current. Strictly speaking what most people call a dynamo is actually an alternator. A true dynamo produces DC, usually by using a commutator and brushes to switch the coils on each revolution.

Answer 3

It uses a permanent magnet which is rotated by a crank. The spinning magnet is positioned so that its north and south poles passed by a piece of iron wrapped with wire. It was discovered that the spinning magnet produced a pulse of current in the wire each time a pole passed the coil. Furthermore, the north and south poles of the magnet induce currents in opposite directions. By adding a commutator, it is possible to convert the alternating current to direct current.

Answer 4

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Answer 5

Dynamo is a generator.

It is used to measure the HP of an engine as a rule. It is also on bicycles and they are small and run lamp at night.

Engine runs a dynamo, load is varied till engine almost stop, power is calculate from the gages.

Answer 6

If U'r highly intelligent , the answer is FLEMING'S LEFT HAND RULE.If U'r not then follow this link http://en.wikipedia.org/wiki/Electrical_generator.

Answer 7

it is like a AC generator which produces current on applying mechanical energy.

Answer 8

ELECTRO MAGNETIC INDUCTION.

pls check ur physics text book for clarification.

Answer 9

to move around a fix place . which a enginear fix to move around

Answer 10

try searching in www.howstuffworks.com