In an actual transformer the iron loss remains practically constant from no load to full load because:____________?
Correct answer: C. core flux remains practically constant
- A. value of transformation ratio remains constant
- B. permeability of transformer core remains constant
- C. core flux remains practically constant
- D. primary voltage remains constant
- E. secondary voltage remains constant
Explanation
With rated voltage and frequency held constant, the core flux is approximately constant from no load to full load. Since hysteresis and eddy-current losses mainly depend on flux and frequency, the iron loss remains nearly unchanged.
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
A transformer can have zero voltage regulation at______________?
Which of the following is not a routine test on transformers ?
Helical coils can be used on___________________?
When a given transformer is run at its rated voltage but reduced frequency, its____________?
Which of the following properties is not necessarily desirable for the material for transformer core ?
The leakage flux in a transformer depends upon______________?