I'm glad you asked. Here are a few pointers. First, choose the appropriate type of question to ask. Questions can be categorized into two basic groups, open and closed. Ask OPEN questions when you want to engage the other person in conversation.
Open questions require more than a word or two to answer adequately.
Too many can come across as confrontational. Subjective questions - use these when you ask for an opinion. Objective questions - these are to ask for specific information. Problem Solving questions - ask these when you want action ideas. Closed questions can be answered adequately in only a few words.