Question 295Electricity/Electronics - QMED70% to pass
What can cause uneven wear of the commutator surface on a direct current generator?
AI Explanation
The correct answer is B) incorrect brush staggering.
Incorrect brush staggering can cause uneven wear of the commutator surface on a direct current generator. When the brushes are not properly staggered, they may make uneven contact with the commutator, leading to localized wear and uneven commutator surface. This uneven wear can negatively impact the generator's performance and efficiency.
The other options are incorrect because:
A) Excessive operation at light load would not directly cause uneven commutator wear.
C) Rapid changes in load may cause other issues, but not specifically uneven commutator wear.
D) Unequal pole spacing is not a factor that would lead to uneven commutator wear.
Related Questions
#293 What should be included in the performance of routine maintenance of dry-type transformers? #294 When replacing a defective transformer in a paralleled transformer configuration, which of the following actions must be carried out to insure proper operation of the equipment it serves? #296 What may cause brush sparking in a DC generator during commutation? #297 Hysteresis is one cause of electrical power loss associated with electricity generation equipment. What phenomenon results in hysteresis? #298 Moisture damage, as a result of condensation occurring inside of the cargo winch master switches, can be reduced by the use of what installed equipment?