Mathematics · DC Generators
What is the magnitude and direction of the average voltage induced across the series-connected field coils of a 6-pole DC generator, each having 500 turns, if the magnetic flux decreases from 0.03 Wb/pole when excited to a residual magnetism of 0.003 Wb/pole in 0.02 seconds after the field circuit is opened?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 124,300 V and its direction is same as the initial direction of exciting current.✓
- 2486 V and its direction is same as the initial direction of exciting current.
- 3486 V and its direction is opposite to the initial direction of exciting current.
- 424,300 V and its direction is opposite to the initial direction of exciting current.
Correct answer
24,300 V and its direction is same as the initial direction of exciting current.
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