Hi,
First of would like to thank immihelp site and users who are writing down their experiences.
This forum helped me a lot to get prepared for us visa interview.
About my experience
First Day :-
Chennai OFC - had taken 2:30 appointment reached there by 2 and I was let in right at that moment(no queue). There was a check against DS160 and passport, few were asked to correct the DS160 application as the place of birth was not matching and few did not have Surname and was shown not as FNU for first name. After the check i was given a token no and was asked to wait inside the Bio-metrics hall in few mins my no was displayed against the counter no, at the counter i was asked for passport recorded my finger prints and photograph was asked to read the details available in passport and was done for the day, was out in 15 mins max.
Second Day :-
Chennai US consulate - had 8:30 appointment reached around 7:45 waited in queue for 30 mins. after few security checks got inside consulate office was asked for finger prints and a token no was issued and asked to wait. Kept an eye on screen and it showed my token no against a counter. was in the queue w.r.t the counter there were 2 more person before me for tourist visa. Finally my turn
ME : Good Morning Officer.
VO : Passport Please.
ME : Sure.
VO : was typing for 10 sec, asked are you a Software Engineer
ME : Yes, I am Sr. Software Engineer.
VO : again started typing, asked are you going for Business Meeting
ME : Yes, for Training and Business Meeting.
VO : started to type again, said your visa is approved.
ME : Thank you :)
Interview was done in 30 secs.
Had prepared for worst, but was lucky :)
Had prepared for all the questions around my travel, stay and business in US. Had practiced 2 line of answers for everything.
Questions i had prepared for was "
http://www.immihelp.com/business-visa/sample-interview-questions.html" and read most of the interview posted here analysed the rejected ones from VO point of view.
If you are bit tensed and worried stand in front of mirror and answer the questions and check yourself from VO point of view .
Tips :-
As suggested by everyone make eye contact, be clear and specific, be confident.
wear formal, don't get tensed.
I don't think there will be rejection for B1 until unless you make a drastic mistake.