Yes, this would be frowned upon.
Essentially having multiple accounts is fine if you don't do anything with the combination of the accounts that you can't do with a single account. The most obvious example of this is voting on your own posts: you can't upvote your own posts, so using another account to upvote your posts is bad. (Very bad.)
Asking more than the system-limited number of questions also falls under this. (You can't ask more than 50 questions per month with one account, so using two accounts to ask 100 questions is bad.) This makes asking questions a "limited resource" with the intention that users treat this as such.
Accounts created to circumvent system-imposed restrictions can be unceremoniously deleted (and your main account may also be penalised). With respect to question-asking rate limits, even before a moderator steps in, if the system detects that an account has been set up to bypass these, that new account will be automatically blocked from asking questions, too.