Answer / krishna mohan

In case of dc motors, we need to change direction of either
field current or the armature current. if u change both the
motor will run in the same direction as before

For ac machines(3 phase) just by changing the phase sequence
we can make the motor to run in opposite direction.

Answer / bk

DEAR ALL,

FIRST OF ALL, I SUGGEST ALL USERS THAT THIS SITE IS USED BY
SOMEONE FOR GETTING KNOWLEDGE, IF U DONT KNOW EXCECT ANSWER
THEN DONT WRITE OVER HERE AND DONT MISSGUIDE OTHER PEOPLE.

YES SAME MOTOR CAN BE OPERATED IN BOTH DIERECTION.
IF MOTOR IS 3 PHASE AC SUPPLY THEN CHANGED ANY TWO PHASE
THEN DOR OF THE MOTOR IS CHANGED.
IF THE MOTOR IS 1 PHASE AC SUPPLY THEN CHANGED STARTING
WINDING LEAD.
IF MOTOR IS DC SUPPLY THEN DOR OF THE MOTOR SHOULD BE
CHANGED IF ONLY FIELD WINDING CONNECTON OR ARMATURE WINDING
CONNECTION CAN BE REVERSE. IF WE CHANGE SUPPLY + AND - WIRE
THEN DOR NOT CHANGE.

Answer / suru nagendra rao

yes, by reversing the direction of the current flowing in motor

Answer / ajay daultani

answer 3 is absolutely correct

Answer / anand

need to be more specific to ask question i.e. ac or dc

Answer / p.k.chadhar

In case of dc motors, change the direction of either
field current or the armature current. if u change both ,the
motor will run in the same direction as before.

For ac machines(3 phase) just by changing the phase connection
we can make the motor to run in opposite direction.

Answer / ramendra shukla

yes, it can be.

For 3 P AC motor _ By changing the Phase sequence
1-P Ac motor- By changing the Starting or Auxilary winding
connection.
for DC motor- By changing the Filld winding pr armature
winding connections.

Answer / ashli

wud like to know both cases

Answer / amey

in motor when armature current is to be changed then
direction of the coil rotation is to be changed.So,in this
way same motor be operated in both directions.

Answer / sri

this can be attained only in dc motors y changingthe
terminal s

can u please mail me the syllabus for GET exam for damodar valley corporation?

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