DC Circuits interview questions
DC Circuits interview questions
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Total Questions: 5
1. When a ferromagnetic core is inserted into an inductor, what happens to the flux linkage?
Correct Answer is : Increases
2. What happens to the current when a ferromagnetic material is introduced within an inductor?
Correct Answer is : Remains the same
3. What is the relation between the flux and the magnetizing current when a ferromagnetic core is introduced within the inductor?
Correct Answer is : Not proportional
4. What happens to the effective inductance when a ferromagnetic core is introduced?
Correct Answer is : Increases
5. A laminated steel ring is wound with 200 turns. When the magnetizing current varies between 5 and 7 A, the magnetic flux varies between 760 and 800 ∫ Wb. Calculate the incremental inductance of the coil.
Correct Answer is : 0.004H
