If a self-excited DC generator running at rated speed fails to deliver an output voltage, which of the following conditions may be a cause of this difficulty?
A
Excessive residual magnetism.
B
An open shunt-field circuit.
C
Excessive brush pressure.
D
A shorted shunt-field circuit.
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Question 1 / 205eccefa3bacbc34ba4d48039
Question 1 of 205eccefa3bacbc34ba4d48039
If a self-excited DC generator running at rated speed fails to deliver an output voltage, which of the following conditions may be a cause of this difficulty?
If a self-excited DC generator running at rated speed fails to deliver an output voltage, which of the following conditions may be a cause of this difficulty?