FirstNaukri
Home Search Jobs Govt JobsNew Resume Makernew Career Guidance Ask n Answer Student Ambassadors

Register|Login

  Ask n Answer
  Ask a Question
0 out of 300 characters

QUESTION
what is commutator
By ishant khemraj na... (Beginner)  8 years ago   34 views
 
 Your Answer
0 out of 1250 character
 
 
 
Share |
Report Abuse
 
 
 
 
ANSWERS (2)
 
 
 
 
commutator is used for only dc machines. because generator produce ac supply commutayor convert in to the dc supply
 
 
 
Know a better answer? Click here to post.
 
 
Hi Ishant, A commutator is the moving part of a rotary electrical switch in certain types of electric motors or electrical generators that periodically reverses the current direction between the rotor and the external circuit. Commutators have two or more softer metallic brushes in contact with them to complete the other half of the switch. In a motor, it applies power to the best location on the rotor, and in a generator, picks off power similarly. As a switch, it has exceptionally long life, considering the number of circuit makes and breaks that occur in normal operation.
A commutator is a common feature of direct current rotating machines. By reversing the current direction in the moving coil of a motor's armature, a steady rotating force (torque) is produced. Similarly, in a generator, reversing of the coil's connection to the external circuit provides unidirectional (i.e. direct) current to the external circuit. The first commutator-type direct current machine was built by Hippolyte Pixii in 1832, based on a suggestion by André-Marie Ampère.

Hope that solves your query,
Feel free to post more queries,
Thanks & Best of Luck!!
 
 
 
Know a better answer? Click here to post.
 
 
 
 
 

Ask & Answer
Panel of Experts

 
 
 
 
 
All rights reserved © 2021 Info Edge (India) Ltd.