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A shorted coil or shorted coils in the rotor will cause arcing at the commutator. It should also be noted that if the brushes are damaged badly enough where they make contact with the commutator, this can cause arcing. Oh, and let's not forget that a stuck brush or brush spring will prevent a brush from making proper contact with the commutator. Arcing can result from that, too.
Patience Graham
Lesedi Tsolo
To increase the brush resistance
shifting of brushes
commutating poles
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Basic principle of commutator motor meter?
It is based dynamometer principle with ironless motor with a wound armature having a commutator. The two coils are connected in series with supply and armature coil is connected in parallel to it.
Why commutator are not used in ac motors?
Because, the commutator segments are used for converting AC to DC.
What is the definition of commutator?
A commutator is an electrical switch that periodically reverses the current direction in an electric motor or electrical generator. A commutator is a common feature of direct current rotating machines.
Why is wall socket hot?
There could be two reasons. One is that the receptical is old and well used and the connected load is close to 1500 watts. Second is that the wires have become loose on the terminal screws and are arcing. In either case get the receptical replaced right away.
The commutator of a universal motor connects each armature coil to?
to a brush
Name two reasons for arcing at the commutator?
1) When the armature is open. 2) When the Field is open. 3) Commutator segments are internally short.
What are reasons for arcing at the commutator?
A shorted coil or shorted coils in the rotor will cause arcing at the commutator. It should also be noted that if the brushes are damaged badly enough where they make contact with the commutator, this can cause arcing. Oh, and let's not forget that a stuck brush or brush spring will prevent a brush from making proper contact with the commutator. Arcing can result from that, too.
What is use of commutator?
The commutator is used to convert the AC to DC
What is the use of Commutator?
The commutator is used to convert the AC to DC
How commutator converts AC to DC?
There is no conversion of AC to DC a commutator is the key to creating straight DC voltage. "The commutator rotates with the loop of wire just as the slip rings do with the rotor of an AC generator. Each half of the commutator ring is called a commutator segment and is insulated from the other half. Each end of the rotating loop of wire is connected to a commutator segment. Two carbon brushes connected to the outside circuit rest against the rotating commutator. One brush conducts the current out of the generator, and the other brush feeds it in. The commutator is designed so that, no matter how the current in the loop alternates, the commutator segment containing the outward-going current is always against the "out" brush at the proper time. The armature in a large DC generator has many coils of wire and commutator segments. Because of the commutator, engineers have found it necessary to have the armature serve as the rotor(the rotating part of an apparatus) and the field structure as the stator (a stationary portion enclosing rotating parts). Which is the inverse of an AC Generator."
Basic principle of commutator motor meter?
It is based dynamometer principle with ironless motor with a wound armature having a commutator. The two coils are connected in series with supply and armature coil is connected in parallel to it.
Explain the necessity and principles of commutator in Dc generator?
what is necessity of commutator in DC generator
Why commutator are not used in ac motors?
Because, the commutator segments are used for converting AC to DC.
What is the definition of commutator?
A commutator is an electrical switch that periodically reverses the current direction in an electric motor or electrical generator. A commutator is a common feature of direct current rotating machines.
How does the commutator reverse the current in a motor?
Commutator is a split ring which reverses the current .when the commutator turns around due to magnetic force and because of it even the current gets reversed
What causes sparking?
It depends on the type of sparking/arcing. If you mean in a DC or series-wound motor, it is caused by the making and breaking of the commutator segments against the motor brushes.If you mean under a car, then it could mean that the muffler is dragging the ground.If you mean in a CRT television, then it is likely problems with the flyback transformer.
Why is wall socket hot?
There could be two reasons. One is that the receptical is old and well used and the connected load is close to 1500 watts. Second is that the wires have become loose on the terminal screws and are arcing. In either case get the receptical replaced right away.
