Which of the following D.C. generators will be in a position to build up without any residual magnetism in the poles?
Understand the Problem
The question is asking about D.C. generators that can initiate operation and build up their magnetic field without requiring any residual magnetism in their poles. This relates to the design and functionality of these generators in terms of their ability to self-excite.
Answer
Separately excited DC generator
A separately excited DC generator can build up without any residual magnetism in the poles.
Answer for screen readers
A separately excited DC generator can build up without any residual magnetism in the poles.
More Information
A separately excited DC generator does not rely on residual magnetism as it gets its excitation from an external source, which allows it to build up voltage even if there is no residual magnetism.
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