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The most efficient method of demagnetizing a magnet is to use an alternating current?
dc with reversing and step-down control
What is armature reaction in dc machines?
The armature reaction is the interaction between armature flux and field flux when current is introduced to a dc motor. It results in a cross-magnetizing effect and a demagnetizing effect.
Is there a action for every reaction?
Yes. Action and Re-action are relative, to how the problem is described. You can start with the reaction and find the action or start with the action and find the reaction.
What is the nickname of Newton's third law?
"Action and reaction", or "For every action there is a reaction"."Action and reaction", or "For every action there is a reaction"."Action and reaction", or "For every action there is a reaction"."Action and reaction", or "For every action there is a reaction".
What is an action that can causes motion?
Inertia is an action that can cause motion.
If you hit a magnetized nail with a hammer what will happen?
The electrons will fall out of line, demagnetizing the nail.
What is demagnitising current?
Demagnetizing a current means too take away the magnetism from the current ;)
What are the methods of sanitizing and clearing a hard drive?
Degaussing (demagnetizing) Physical Destruction Overwriting
How is magnetizing an object the opposite of demagnetizing a magnet?
Demagnetizing. Place the magnet at the opposite end of the metal from where you magnetized it. Again, the magnet must make as much contact with the metal as possible. Rub the metal with the magnet in the opposite direction that you used to magnetize it.
What is the demagnetizing component of armature reaction?
it is the flux which is flowing opposite to the main field flux and demaganetize it... in order to eliminate this demagnetiszing component we have to connect the compensating winding in series with the armature winding which develop the flux in it oppose to the demagnetizing component
The most efficient method of demagnetizing a magnet is to use an alternating current?
dc with reversing and step-down control
What is the advantage of buying magnetic bulletin board?
You don't have to put a hole in your wall. You do however have to risk demagnetizing things nearby. Your choice.
How can you demagnetizing a magnet?
To demagetize a magnet you could smash one if the ends with a hammer. this will cause the order of atoms to rearange so that it's not magnetic.
What is the advantage to buying a magnetic bulletin board?
You don't have to put a hole in your wall. You do however have to risk demagnetizing things nearby. Your choice.
What is armature reaction in dc machines?
The armature reaction is the interaction between armature flux and field flux when current is introduced to a dc motor. It results in a cross-magnetizing effect and a demagnetizing effect.
What is purpose of demagnetizing test during current transformer test?
The residual magnetisation present in the current transformer coils may cause the errors during measurement of high currents. So that it is necessary to check that.
Which type of magnet can easily be magnetized and demagnetized?
An electronic magnet is by far the easiest because you magnetize one by hitting a button (or for home made magnets) connecting a wire, and demagnetizing by hitting the button again or disconnecting the wire.
