What is commutator in motor?
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What is commutator in motor?
A commutator is a rotary electrical switch that periodically reverses the current between the rotor and the external circuit. The commutator was discovered by William Ritchie and Hippolyte Pixii in 1832. Commutators are used in DC machines (DC motors and DC generators) universal motors.
What does a commutator do in a DC generator?
In a generator the commutator picks off the current generated in the windings, reversing the direction of the current with each half turn, serving as a mechanical rectifier to convert the alternating current from the windings to unidirectional direct current in the external load circuit.
What is a commutator Class 10?
A device that reverses the direction of flow of current through a circuit is called a commutator.
What is difference between armature and commutator?
The combination of the commutator, ball bearings, winding & brushes is called an armature….Key Difference between Armature & Commutator.
| Armature | Commutator |
|---|---|
| It provides current to commutator from the core of the armature | It changes AC to DC & vice-versa |
| It is a set of coils arranged in the core | It is a set of segments |
What is the difference between armature and commutator?
Is slip ring a commutator?
A commutator is a specialized slip ring typically used on Direct Current motors and electrical generators to transfer electrical power between the stationary housing and the rotating armature with the added purpose of reversing the electrical current direction.
What will happen if commutator is not used in a DC motor?
Without a split ring commutator the current would not reverse when armature reverses, and the magnetic fields of the rotor and stator would clash and the rotor will stick in a position and not turn.
What is difference between slip rings and commutators?
Slip rings are used in AC motors to provide a continuous transfer of power whereas the commutators are used in DC motors to reverse the polarity of the current in the armature windings.
What is difference between commutator and split ring?
The difference between the slipring and the commutator Slipring is used in AC motors to provide a continuous transmitting of power and signal, whereas the split ring is used in DC motors to reverse the polarity of the current.
What is commutation in DC machines?
The commutation in DC machine or more specifically commutation in DC generator is the process in which generated alternating current in the armature winding of a dc machine is converted into direct current after going through the commutator and the stationary brushes.
Which DC motor has high torque?
DC series motor
The torque of the DC series motor is proportional to the square of the armature current. That is why the DC series motor has high starting torque. The DC series motor produces the highest torque among all kinds of motors.
