Discussion
Braking a drive is required in order to
Answer: A
Correct answer: decelerate it, hold it, or control a descending load
Braking serves three distinct duties, and they demand different arrangements. Deceleration removes kinetic energy from the rotating parts and ends at zero speed. Holding keeps a stationary load stationary and needs torque at zero speed, which electrical braking cannot give. Controlling a descent restrains a load that gravity would otherwise accelerate, and it may continue for minutes at a steady speed, so the energy involved can be far larger than a stop. Braking has nothing to do with acceleration, power factor or losses at the rated point.
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