Discussion
The essential requirements for selection of material for transformer core are
Answer: B
The requirement is high initial permeability, low hysteresis loss and high specific resistance.
A transformer core must carry the magnetic flux easily, so its permeability should be high. It is magnetised and demagnetised fifty times a second, so the hysteresis loop must be narrow (low hysteresis loss). And to limit eddy currents induced in the core, its resistivity should be high, which is why silicon steel, laminated and insulated, is used.
Each of the other options gets one of these three properties the wrong way round.
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