Concept explainers
The “Ohm’s law” for the magnetic circuit states that the net magnetomotive force (mmf) equals the product of the core reluctance and the core flux.
(a) True
(b) False
Whether the given statement is true or false.
Answer to Problem 3.1MCQ
The given statement is true. The correct option is (a).
Explanation of Solution
Magneto-motive force is analogous to electro-motive force, magnetic flux is analogous to electric current and magnetic reluctance is analogous to electric resistance.
So ohm law for magnetic circuit can be stated as "magnetic flux produced in magnetic circuit is directly proportional to magneto-motive force".
Therefore,
Simplify above equation.
Rearrange above equation.
Here,
So net magneto-motive force equal the product of core reluctance and core flux.
Thus, the given statement is true. The correct option is (a).
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Chapter 3 Solutions
MindTap Engineering, 1 term (6 months) Printed Access Card for Glover/Overbye/Sarma's Power System Analysis and Design, 6th
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- Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning