Surveys in the Online Classroom.

Many Course Management Systems allow teachers to put Surveys in the class. These tools let teachers ask students for anonymous feedback but also allow provide teachers with the names of students who participated. The survey can then be given “extra credit” or points for participation but students know their identity is protected. In contrast to the face-to-face class online surveys do not take up class time.
Surveys can be used throughout the course to get information on where students have problems. In a face-to-face class teachers often use CATs http://www.ntlf.com/html/lib/bib/assess.htm. However, these techniques, like the one-minute-paper, need to be adapted for online. Some teachers require weekly surveys but if overdone students will not take them seriously. These surveys may be most effective in the beginning and middle of the class.
A different use for the survey tool is to help faculty make changes in their courses. While many institutions require end of course surveys, the return rate is often low, often around 30%. http://jolt.merlot.org/Vol2_No2_Laubsch.htm Often the questions asked are standard for the institution and do not give faculty the information needed to enhance the course. In this case the survey can be a useful tool.
I prefer open ended question to True/False or Multiple choice for the end of course survey. My theory is if you ask a question that is T/F or MC and you get an answer then what do you do with that? The students may give a low rating to one of the questions but then unless you ask them to justify their ratings you have no clue why they did. If you need documentation for retention or promotion then having the numbers may be required.
Students do NOT like long surveys. In fact, many prefer NOT to fill out surveys at all. That is why the option to see who did the survey is helpful. I set up a column in the grade book so that I can give students a grade for doing it, which is a motivator. I also make sure to tell the students that I WILL use their responses, and even tell them how their class was changed because of past students’ input.
There are surveys whose validity has been verified:
• COLLES http://surveylearning.moodle.com/colles/
• ATTLS http://http://thejournal.com/Articles/2008/03/24/Creating-a-Collaborative-Syllabus-Using-Moodle.aspx?Page=2/

These are not a help to you if you want particular information on YOUR course structure but the questions are interesting to look at.