Discussion
A meter of constant 375 rev/kWh makes 5 revolutions in 20 seconds. The load is
Answer: D
Correct answer: 2.4 kW
Five revolutions represent \( 5/375 = 0.013333 \) kWh, delivered in 20 seconds, which is \( 20/3600 \) of an hour: \[ \frac{0.013333}{0.005556} = 2.4\ \mathrm{kW}. \] The check on any such calculation is the units - revolutions divided by the constant give kilowatt hours, and dividing by the time in hours gives kilowatts.
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