Discussion
The efficiency of a transformer is higher than that of a rotating machine of the same rating because it has
Answer: A
Correct answer: no friction, windage or rotor loss
A transformer is static. It has copper loss and core loss like any machine, but nothing rotates, so there is no bearing friction, no windage and no rotor loss, and the cooling requirement is correspondingly smaller. That absence is the whole of the difference, and it is why transformer efficiency exceeds 99 per cent while a motor of the same rating reaches perhaps 95.
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