Discussion
An induction motor drive is preferred to a dc drive in a dusty or hazardous area because it has
Answer: B
Correct answer: no brushes to spark or wear
A cage induction motor has no brushes, no commutator and no sliding contacts, so there is nothing to spark in a flammable atmosphere and nothing to wear out or need replacing in a dirty one. A dc machine’s commutator sparks by its nature and its brushes must be inspected and changed. The efficiency advantage is real but modest; the maintenance and safety advantage is decisive.
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