I've only been learning Spanish a month but I think "qué" means "what" and "cuál" means something closer to "which" in English. Often in English you can say "what" to mean either "what" or "which." In many other languages, you need to actually distinguish the difference. By this logic, you should use cuál/which when you are asking a question where there are available or known options to choose from. Qué/what should really be reserved for when there aren't any known options to choose from. I could be completely wrong, but this is the understanding I have. In Dutch they do a similar thing where "wat" means "what" and "welke" means "which" and you have to actually differetiate between the two.

que 相当于什么，类似于what， cual相当于哪个，类似于which， 这很好区别和使用。 估计疑问来自于cual es tu nombre？问名字为何要用cual而不是what，我估计是西班牙是个虔诚的天主教国家，名字都是取自圣经中已经有的名字，故而用哪个是你的名字，而不是你的名字是什么。