The noise resulting from vibrations of lamination set by magnetic forces, is termed as

Electrical Engineering XYZ MCQs

The noise resulting from vibrations of lamination set by magnetic forces, is termed as:

1. Hum
2. Zoom
3. Magnetostriction
4. Boo

Correct answer: 1. Hum

Explanation: Magnetostriction is indeed the phenomenon where magnetic materials change their size or shape when magnetized, which in electrical transformers and similar devices, happens due to the alternating magnetic field caused by the AC current.

The noise that results from this magnetostriction is most commonly referred to as “hum.” The vibrations caused by the magnetostriction lead to the audible hum that can be heard emanating from devices like transformers.