No, fans do not make any current. A generator, alternator or inverter make current
Electricity or rather electric currant can be either AC or DC. AC means alternating current (as in that electricity that is supplied by the mains) and DC means direct current (as in that electricity supplied by a battery)..
No, an AC dimmer switch is designed to work with AC-powered devices, not DC. DC fans require a different type of dimmer switch specifically rated for DC power. Using an AC dimmer switch on a DC fan can potentially damage the fan or the switch itself.
is AC, bro...
AC
usually ac 110v even on the dc motors
ac current
It depends on the motor. The fan is driven by an electric motor, and it can use a dc motor (as in a car) or an ac motor (as in a house). They are not interchangeable.
BOTH
The fan begins chattering or hamming.
dc
A fans blades are driven by motors. Since there are both AC and DC motors, fans can be AC or DC. The fans in your computer are DC fans. Your ceiling fans are AC fans. (Thanks for fixing my answer)
If having DC and AC is required then a PWM pulse width modulator is required to chop the DC to make AC