What would be the magnitude and direction of average voltage induced across the field coils of a 6-pole DC generator each having 500 turns if there is a magnetic flux of 0.03 Wb/pole when the field is excited and residual magnetism of 0.003 Wb/pole after the field circuit is a is opened in 0.02 second? Consider the field coils to be connected in series.
1
24300 V and its direction is opposite to the initial direction of exciting current.
2
486 V and its direction is opposite to the initial direction of exciting current.
3
486 V and its direction is same as the initial direction of exciting current.
4
24300 V and its direction is same as the initial direction of exciting current.
5
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