Discussion
The error caused by the inductance of the pressure coil circuit of a wattmeter is
Answer: B
The pressure coil current lags the voltage a little because of the coil's inductance, so the angle between the two coil currents is reduced and the cosine is increased. On a lagging load the instrument therefore reads high, and the error grows as the power factor falls.
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