Electronic Devices and Circuits - Engineering

Q1:

An air gap provided in the iron core of an inductor prevents

A flux leakage

B hysteresis loss

C core saturation

D heat generation

ANS:C - core saturation

When AC signals are applied, this nonlinearity can cause the generation of harmonics and intermodulation distortion. To prevent this, the level of signals applied to iron core inductors must be limited so they don't saturate. To lower its effects, an air gap is created in some kinds of transformer cores.