How can I make a test showing a failed message if a time limit has passed?

hello is it possible to make the test with time limit for example they have to cover the test within 30 minutes if not than they fail

If I understand you correctly I believe you mean you want to create a form that starts and ends after 30 minutes have gone by.

You can do this with our Global Countdown Widget which prevents the form from being submitted if it goes beyond a specified timeframe.

http://widgets.jotform.com/widget/global_countdown 

Here's a quick 10 Second Demo Form: 

https://form.jotform.com/62815476001956