An air gap is usually inserted in magnetic circuits to____________?
Correct answer: C. prevent saturation
- A. increase m.m.f.
- B. increase the flux
- C. prevent saturation
- D. none of the above
Explanation
An air gap adds reluctance to the magnetic circuit, which limits excessive flux and helps prevent core saturation. It does not increase flux for a fixed magnetising force, so c is the intended choice.
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