Essentially yes, that's how they are tuned. Now, whether or not they're turned all to one note or to more then one note, I'm not quite sure but I think it depends, kind of like whether a guitar player uses standard tuning or an open-chord based tuning. All strings are used as drones except for one, which the melody is played on. I don't believe chords are ever played with the sitar. I might be wrong however.