Answer / zakeer

in dc motor commutator converted DC to AC

in DC genator its function is AC to DC that's way we called
as commutator is a mechanical rectifier

Answer / saad

first of all ,it is dc motor not a generator.
We are already giving it a dc current ,so normally there
should not have been any need of commutator'
but as the armature is rotating, with every half
rotation ,the direction of rotation is reversed.
so it should be rotating in anti_clock wise direction for
half cycle and in clock_wise direction for next half cycle.
to cater this ,the direction of current should be reversed
after every half cycle.
that's why a commutator is used to change the direction of
current to cater the problem of torque

Answer / murali

in d.c motor commutator serves in produsing unidirectional
torque

Answer / a.balakrishnan

The DC Generator generate the AC supply only in Armature
not DC Supply.But we want Dc source , so want one converter
thats why we use commutator.In shortly we can say its
converts AC source to DC source.

Answer / dharmesh

commutator function in the dc motor is to convert dc
quantity into ac, so it produces regular torque.
& in case of generator it converts ac quantity into dc.
THE FUNCTION OF COMMUTATOR IN DC MOTOR IS TO REVERSE THE
DIRECTION OF CURRENT.

thank you.

Answer / rahul thakur

A commutator serves two purpose in DC Machines-the first
one is to convert alternating quantities into direct
quantities and vice-versa and second is to keep the rotor
or armature MMF stationary in space.

Answer / raju kanjariya

first of all ,it is dc motor not a generator.
We are already giving it a dc current ,so normally there
should not have been any need of commutator'
but as the armature is rotating, with every half
rotation ,the direction of rotation is reversed.
so it should be rotating in anti_clock wise direction for
half cycle and in clock_wise direction for next half cycle.
to cater this ,the direction of current should be reversed
after every half cycle.
so, commutator is a converting d.c to a.c
because we are giving a pulse of every half cycle.that
called a function of commutator in dc motor

Answer / santosh jagale birla cellulosi

THE USE OF COMMUTATOR IN DC MOTOR IS JUST REVERSE THE
DIRECTION OF CURRENT & NOTHING ELSE. ALSO YOU FIND THE NO.
OF UNEVEN COMMUTATOR SEGMENTS. FOR MORE DETAILS REMEBER
THE WORKING OF DC MOTOR

THANK YOU

Answer / reddy

commutator periodically reverses the current direction
between the rotor and external circuit....

Answer / prabakaran

Dear all please note commutator is not a converter, all are
telling dc ot ac, we already giving dc supply to motor
through motor terminals at A1 & A2 (ie.+ & -) it is
transformed to rotor winding or bars through Brush and
commutator.

DC supply - Motor TB A1&A2 - Carbon Brush - Commutator -
Rotor winding or copper bars

what is the maximum current rating in india for home?

3 Answers  

What are the electrical engineer roles and responsibilities in chemical plant?

0 Answers  

What is the safety protection? Name the protections of Transformer?

1 Answers   HSL,

Why HT cable have only 3 core ?

10 Answers   Jindal, McDermott,

In 3pin or 5pin socket why the earth pin is bigger

3 Answers  

can we install LT panel & HT panel in one room?

1 Answers  

can anyone provide me a amf panel control wiring using ec-2 relay?

0 Answers   Electro Tech,

Explain what is CBCT.

1 Answers  

what is the principle of generator , induction motor,d.c motor

1 Answers  

WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC

0 Answers  

different b/w counter poise and ground wire

1 Answers   L&T, TCS,

1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.

0 Answers   ABC,