Yes, when you spin them, feel for any roughness and listen for any noise.
The items to check are :
1. the alternator
2. the idler roller just above the water pump ( common problem of noise )
3. the water pump ( back of belt runs against it's pulley ) ( if this is bad, it's easy to tell, it should have NO wobble in it )
4. the tensioner pulley. ( common problem of noise )
5. the PS pump pulley
6. the A/C pulley.