ssvadim

With <a href="http://www.100vadim.com/ssquiz/" rel="nofollow ugc">SSQuiz</a> you can make quizzes really fast. Add questions/quizzes, rearrange questions, edit answers, insert multimedia in questions – all of this can be done on single page within several seconds. Also one can edit welcome/finish/email templates using html if it’s needed. Quiz automatically determines what type of test user creates (choose-correct, fill-blank or question with several correct answers). Once quiz is over, user can walk through their answers and see correct answers.
Features include:
<ul>
<li>Easy and fast quiz creation</li>
<li>Multimedia in questions</li>
<li>Multiple types of questions</li>
<li>Timer</li>
<li>Email sending to user or teacher</li>
<li>Plugin API (See FAQ)</li>
<li>Localization ready (Currently added Russian and Persian translation)</li>
</ul>

SS Quiz

With this plugin administrator can easily and fast create complicated tests and user can't relax, answering this questions.

Evgeniy Kutsenko

This Plugin allows you to include a simple Textbox through which your site visitors can ask you short questions. 
You can answer them through the backend. 
This plugin is not a dependent version of the plugin <a href="https://wordpress.org/plugins/askme/" rel="ugc">Ask Me</a>.
See it in action at: (<a href="http://wp.starcoms.ru/qa-plugin/" rel="nofollow ugc">http://wp.starcoms.ru/qa-plugin/</a>)

Simple Q&A

Simple Plugin to let your users ask questions.

SS Quiz vs Simple Q&A