I watch TV very frequently and have a lot of questions. However, I feel like I can't ask all of them at once because it could flood the Active Questions, stealing away from other users. So I want to know something. Can I ask too many questions?
If you do ask many questions, you should also take the time to read, comment (if needed), upvote, and accept answers from people who take the time to work on answers.
If you start asking such many questions that you don't even have the time to review the answers, people (answerers) will start to think you are not thankful on their work.
So the limit will be set by the time you will have to review answers.
Also take in consideration that writing a good question takes some time, as you will probably have to provide links, quotes, details to help the answerers.