can any one say how to draw the attached pics drawings
You should use find useful the loft command... if this exist in autocad I am not sure to be honest.
With a couple of profiles and guide rails you definitely can get these results.
Beside if autocad is not very handy you can use Inventor fusion it must be for free until now from lab of autodesk.
If you still cannot figure out how provide some more pictures to give a try
The reason that I am suggesting fusion is because it has a very good interoperability... with autocad
Check this link is an easy presentation of the loft command and you can do similar in fusion