Should fans rev when power is applied and computer is in off state?

I have a new XPS 8900. I use a power strip and disconnect power from the machine.at times. Even though shut down properly on previous use, and bios is set to go to off state after power interruption, the fans will rev for a couple of seconds when power is applied, then the computer goes to the quiet off state. An individual at Dell tech support told me this is normal, but this individual was wrong on some other stuff discussed. I've never had a computer do fan activation on just being plugged in when it should be in the off state. Is this a correct behavior for the XPS 8900?