a 15" PC monitor will often fit decased into a 13" arcade monitor frame, consider them to be the same size. They are appropriate in anything that used a 13" monitor, which is some cocktails, some mini's and some cabarets.
A 21" PC monitor is the appropriate replacement size for a standard 19" arcade cabinet.
A 17" PC monitor isn't the right size for anything, way too small for most 19" arcade cabs and won't fit in most 13" cabs. It won't even fit in the few 17" cabs (Nintendo dual monitor cocktails), because the tube is too small and the neckboard too large.