Quora has a mechanism for auto-asking questions like that. Question patterns by Jay Wacker on The Quora Blog ; Quora Question Patterns blog.
We are assured by Quora that any such auto-asked questions out of Quora will indicate a Quora Bot as their author; e.g. Quora University Question Author.
If you don’t see a Quora bot as the author, as you’ve pointed out, then they are regarded as spam by the community.