Read the book, hand outs, etc. You should be able to find the answers in one of them...
Btw, are you also looking for someone to weld your tests because you don't have time to practice???
If this is truly your attitude - then may I suggest that you pursue another line of work.
UUMMM,
Mike,
I'm so sorry the guys are being so hard on you....Well, not really. See, normally I would welcome you to the great AWS Welding Forum. But if you have only come here to get easy answers for your homework, then you came to the wrong place.
The people here are full of knowledge and experience that they share very freely, where appropriate and properly asked. But really now, do you really think this is a line of work for someone who always wants someone else to do the heavy lifting?
Try breaking the ice with some more honest questions on topics you truly are attempting to understand but just can't put together. You will get a totally different response.
He Is In Control, Have a Great Day, Brent