Which of the fpllowing inductor will have the least eddy current losses ?
Correct answer: A. Air core
- A. Air core
- B. Laminated iron core
- C. Iron core
- D. Powdered iron core
Explanation
An air-core inductor has no conducting magnetic core in which circulating eddy currents can form, so its eddy-current loss is least. Laminated and powdered cores reduce eddy currents but do not eliminate them completely.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Circuit Analysis
394 free Circuit Analysis 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 Circuit Analysis questions
An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is____________?
Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?
A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage ?
A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is_____________?
A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be nearly______________?