query related t0 transistor...

can u make me clear about three regions of transistor...CUT OFF,saturation & active....
THANK you....

What your doubt in these?

when it comes in to saturation...& cut off...state....ACCORDING to supply voltage?

Say for FET, if Vg=-1V is linear voltage, then maybe Vg=-0.1V is saturation, and Vg=-3V maybe the cutoff.