Discussion
The chief maintenance requirement of a dc motor is
Answer: A
Correct answer: inspection of brushes and commutator
The sliding contact is the one part of a dc machine that wears in normal service, so brush length, spring pressure, bedding and commutator surface are checked routinely and brushes replaced as they wear down. Windings and bearings need attention on the same schedule as any other machine. It is this recurring brush maintenance that has driven dc drives out of most new installations.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development