what is the effect when the shunt field winding is opened
in dc shunt motor (i) at the time of starting ? (ii) in
running condition ?
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Answer Posted / rvg
AT the time of starting:
since the winding not energized, there will not be magnetic
field and at the same time armature being energized. so the
effect is ,a low resistance path being energized, so there
are chances of armature winding damage.
During running condition:
As soon as the field winding got de-energizes, the magnetic
field becomes close to zero(practically there will be some
residual magnetism), and speed of the motor will be much
higher and ultimately, the rotor will will be
damaged(mechanical parts).
| Is This Answer Correct ? | 16 Yes | 6 No |
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