what is the function of commutator in dc motor?

Answer Posted / ram

in motors it is used to produce a alternating flux with a
uniform dc source

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

1556


Difference between field rheostat and armature rheostat.

699


how i can calculate the size for fire cable

1502


surge tank, hrc fuse, earthing transformer, firm power objective type

1118


what is smartµ grid technology?under coal gassification?

1525






What is phenomenon of electromagnetic induction and how it works?

622


We have 90mX100m hangar with 16 no.of supporting pillar. It is required to provide power supply on all pillars. what is suggested earthing scheme for hangars.

1608


i wasted one year for the job after completed my btech what can i say about 1year time in interview

1600


Explain the operation carried out in thermal power stations?

618


Why synchorised generators are used for the production of electricity?

718


how is capacitor bank look like

1935


how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

1042


What should be current in the Primary and secondary side of 1000KVA (11KV Supply)Transformer.?

638


A 230V dc shunt wound motor has an armature resistance of 0,15Ω.When operating on no load at 650 rev/min the armature current is 6A . The motor takes a full load current of 85A. Calculate the full load speed if the field flux is (i) maintained constant (ii)reduced by 0,03

1599


What is the working mechanism of OLTC in Power Transformers????

3893