Discussion
A transformer is rated in kVA rather than kW because
Answer: A
Correct answer: its losses depend on current and voltage rather than on power factor
Copper loss is fixed by the current and core loss by the voltage, and neither depends on the phase angle between them. Since the manufacturer cannot know what power factor the load will have, the rating is expressed as the product of the voltage and current the transformer can sustain - volt-amperes - leaving the real power to the user’s load.
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