Avocados are high in fat. But it's monounsaturated fat, which is a good fat that helps lower bad cholesterol, as long as you eat them in moderation. Avocados have a lot of calories. The recommended serving size is smaller than youâd expect: 1/5 of a medium avocado (or 1 ounce) is 50 calories.
Why do transformers hum? Transformer noise is caused by a phenomenon which causes a piece of magnetic sheet steel to extend itself when magnetized. When the magnetization is taken away, it goes back to its original condition. This phenomenon is scientifically referred to as magnetostriction.
A sharp buzzing could mean that some of the windings of wire have become unglued... Most transformers emit a humming sound because they are not 100% efficient inâ¦ transforming electric current. Some of that extra energy winds up as heat, some as motion which sets the surrounding air in motion which we can hear. 1 person found this useful.