Adding to Crow's reply here's quick summary of ATAR/UCAT/Interview weightings for place offer.
Griffith, Melb : 100 / 0 / 0 (Melb requires to pass an interview in 3rd year)
Flinders : 90 / 10 / 0
UQ : 0 / 100 / 0
JMP, USyd : 0 / 0 / 100
WSU : 0 / 25 / 75
Adelaide, Curtin : 40 / 20 / 40
Monash, UWA : 33 / 33 / 33
UNSW : 33 / 33 / 33 stated previously, has now changed to (unspecified) combination of the three.
My hunch is it is still so, except UNSW reserves the rights to reject those with ultra high ATAR+UCAT but a miserable interview. Using 33/33/33 these applicants would qualify for top third overall on their ATAR+UCAT's strength alone, thus UNSW avoids stating it explicitly.
UTas is too complicated to summarise. JCU is *probably* 33/33/33 ATAR/Interview/Rurality (this rurality rating also applies to non-rurals, they just get a near zero rating I guess).