Lutron #D-600PH-DK 600W SP Push Rotating Dimmer "installed dimmer switch humming" Questions

...switch I replaced a dimmer with a new lutron dimmer.....The same problem exists. It comes on okay, but when I turn the knob to lower the light it starts humming????? Is it connected to a fan motor ...

...installed Leviton dimmer switch humming at the switch I just installed a Leviton touch dimmer for my dining room chandelier. Now whenever I turn the light on there is an annoying humming sound coming ...