If you are going to ask a question, please be courteous enough to read your question before you post it.
I assume you mean "What happens to price level and National Output when the federal reserve carries out an open market sale?"
So this will first of all decrease the money supply because they are selling bonds. This then reduces the national money supply. Counter-cyclical to money supply is the interest rate, so if there is a decrease in money there will be an increase interest rates.
If interest rates go up, Aggregate demand (which is what I assume you mean by AD) will decrease because businesses return's on capital investment will go down, causing them to invest in less projects. The interest rates on credit should theoretically rise causing consumers to pay cash instead of using credit.
As far as the SRAS curve goes, it depends if the economy is in a recession or inflation. I suggest you use this web page as a resource: