Discussion
A crane hoist motion requires the drive to
Answer: B
Correct answer: hold, raise and lower the load under control
A hoist must motor to raise, brake regeneratively to lower a load that would otherwise run away, and hold the load stationary against gravity. That is four-quadrant operation with a genuine holding requirement, and it is why hoist drives are among the most demanding on a plant.
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