Answer / viren

IT CONVERT THE ALTERNATIG CURRENT GENTRATED IN THE WINDING
OF MACHINE INTO DIRECT CURRENT.

Answer / sumit maitra

commutator is a mechanical rectifier which converts ac to dc

Answer / sunil guru

COMMUTATORS IS USED ALONGWITH THE BRUSH TO PROVIDE UNI-
DIRECTIONAL CURRENT AND TORQUE FROM THE ARMATURE

AND IT CONVERS AC TO DC IN DC MOTOR OR GENERATOR

Answer / arun kumar

ACTUALLY COMMUTATOR WAS USED TO ENERGISE THE WINDING FOR DC MOTORS
AND FOR GENERATORS COLLECTS THE EMF FROM ROTOR

Answer / kalaimagal

In dc motor actually dc supply will be given as source for
excitation.the function of commutator is to convert the ac
supply to dc supply,it same as rectifier function.

Answer / anil bhatia

commutator is basically a midiam by which current is passed
through from fixed conductor to rotating field of rotor or
vise versa.

Answer / desingurajan

First answer is moreover correct

But 4th is 100% wrong answer
(In DC motor we do not give AC supply)

Desingh
Rajapalayam
Ramco Cements

Answer / bhagya

sir actually the function of the motor is to convert
electrical to mechnical energy but wat is the purpose of
commutator in dc motor.if we ll not give ac supply

Answer / anbuselvan.g

Motor is always convert Electrical power into Mechanical Power.

Here in DC motor, we just give AC supply as Electrical
Power, the Commutator will convert or rectify the AC into DC
to its windings.

It is also called as Rotating Rectifier.

The same function happen in DC generator which convert
Induced AC power in Armature into DC power to their loads.

Answer / udhaya kumar

commutator reverses the flow of current.In order to develop
mechanical force.

Dear Sir / Madam, Actually we requied 64 A MCB, But i have 32 A MCB = 2 No's this two i have to make series connection and we usw any place? isit possible or not......

4 Answers   Hindustan Unilever Limited,

What is time invariant system?

0 Answers  

DEAR ALL I have motors ( 10 units )each one is 90kw 380V 50 HZ 1000rpm but new local pwer is 220v 60 hz requierd rpm should be 1000 pleas what the beast solution is used frequncy converter or rewinding all motos or chang all motors thanks

6 Answers   GE,

Why to keep capacitor bank off while generator running.

0 Answers   GIT,

WHERE to use CVT & PT.

11 Answers   Suzuki,

generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

0 Answers  

why PT transformer primary r the grounded?

2 Answers   L&T,

What is VFD, and how its work

5 Answers  

explain why reduced voltage starters are required for large tree phase inudction motor

2 Answers  

What is installed in PAC that is control the humidity

0 Answers   Sodexo,

how convert kvar to microfarade? circuit diagram of infrared transmiter and receiver? circuit diagram of Fm transmiter and receiver?

2 Answers  

Why we use Capacitor in Single Phase Induction Motor?

12 Answers   IIT,