Thanks to immihelp and the users who have posted their experiences , which helped me to take up the interview confidently .
-> Appear in formals , wish the officer , have smile and be confident with your answers
-> maintain eye contact with visa officer while answering to his questions .
In my case , it is just a minute of interview , fired 3 questions
1 ) why are you travelling to US ?
2) which city you will be visiting ?
3 ) Duration of stay ?
i answered confidently looking at him , after 3rd question answer , officer said "approving your VISA , Thank you " , I replied Thank you sir , have a great day ...
we may face only few questions but have the answers to every question given here based on your criteria
http://www.immihelp.com/business-visa/sample-interview-questions.html
here are the some questions which are very frequently asked , be prepared for these .
1 why are you travelling to US ?
2 where are you travelling to ?
3 duration of stay?
4 what's your salary ?
5 which company you are working for and how long?
6 where will you stay in US ?
7 what's your designation and role ?
8 company profile?
9 how many employees are there in your company ?
10 why your trip is so long?
11 why have you been choosen for travel ?
12 what will you do once you are back ?
13 why business meetings in US ?
14 which project you are working on , whats your role?
15 how your trip is benefit to your team in india?
16 why do you need business visa?
17 If you dont travel , what is the impact to project ?
GOOD LUCK !! WISH SUCCESS FOLLOWS