Explain working of DC motor with neat labelled diagram.
Answers
Answer:
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(1 Point)
Answer:
Working: The armature ABCD is rotated in the clock wise direction in the field and at any instant, S1 is in contact with B1 and S2 with B2
. Under such situation AB will come up the plane of paper and CD will go down. They by fleming right hand rule, the direction of induced current will be along ABCD S1 BB RB2 S2
A. So, the current in the external circuit flows from B1 to B2 through R.
After half rotation, split ring SS is in contact with B1 and S1 and the arms. AB and CD interchange their is positions. Now again when the coil is rotated clockwise CD comes up the plane of paper and AB goes down. Then by fleming right hand rule the direction of induced current is DCBA SS B1 RB2 S1
D. Hence, in the external circuit the current flows from B1 to B2
through R. So, the current in the enternal circuit flows in the same direction. Hence, direct current is obtained.
