Iron loss of a transformer can be measured by____________?
Correct answer: A. low power factor wattmeter
- A. low power factor wattmeter
- B. unity power factor wattmeter
- C. frequency meter
- D. any type of wattmeter
Explanation
In the open-circuit test, the wattmeter reading is mainly the iron loss, while the power factor is very low because the exciting current is largely reactive. Hence a low-power-factor wattmeter is used for accurate measurement.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Electrical Machines questions
Which of the following is the most likely source of harmonics in a transformer ?
If a transformer is continuously operated the maximum temperature rise will occur in_______________?
The hum in a transformer is mainly attributed to______________?
Which of the following loss in a transformer is zero even at full load ____________?
Negative voltage regulation is indicative that the load is___________?
Helical coils can be used on___________________?