Why did I get a promotion with no raise? Is this normal?

Yes, if you work non-profit or if there’s just not a lot of money in your industry/company/department. If you now have significantly more work, you are being undervalued and taken advantage, sadly, it’s likely time to leave unless you intend for this to be your last position before retirement. If a title change is to highlight significance or expertise in a field or perhaps you are being groomed on the way to a higher paying role, you may want to stick around. Advice is; don’t be afraid to ask the reasoning behind the decision / next steps / and expectations to reach the next milestone. Your growth should be important to you and those who lead you and this will be an exciting conversation with a leader who is invested in you.

I assume that this was a linear, upward promotion, rather than across silos? For instance, from a developer to a line manager, rather than from developer to support manager? If the former, then no, I do not consider it normal. If the latter, then you may have moved to a career-path with lower average salaries. Depending on your career goals, a promotion without raise may make sense, since it may accelerate your upward mobility. But in general, I expect to earn more if my responsibilities increase.

No, you should find another job. If you are good enough to be promoted then you will be as good somewhere else. The new company will always pay you more than you are making at the current company.

NO, this is NOT normal and speaks to whether or not a company values your work and you as an employee.

Because you aren’t worth anything to your employer, and they want you to do more work while making you feel more important...but don’t care enough to compensate you for added labor.

It happens. It might be a good time to ask about raises in the future.

Yes and No. This will help in messaging ego of employee and at same time give title/authority to learn and grow in new role. Will save company money and will also help in retaining employee who might have moved elsewhere.

I wouldn't think that's normal. I look at a promotion as some sort of a step up and your pay should follow suit.

In my opinion, a promotion should provide some kind of bump in either money or benefits. Though there may be times where this is not the case, I would need more information on the situation.