A ferrite core has less eddy current loss than an iron core because_______________?
Correct answer: A. ferrites have high resistance
- A. ferrites have high resistance
- B. ferrites are magnetic
- C. ferrites have low permeability
- D. ferrites have high hysteresis
Explanation
Ferrites have much higher electrical resistivity than ordinary iron, so circulating eddy currents and the resulting loss are greatly reduced. Their high resistivity is especially useful at higher frequencies.
Last updated
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.
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.
Related questions
The typical value of SCR for modern alternator is____________?
If the efficiency of a machine is to be high, what should be low __________?
Which of the following does not change in a transformer ?
In a transformer the energy is conveyed from primary to secondary_________?
A transformer core is laminated to__________?