Recourse(except winding up) in case 3/4 directors resign.

Instead of winding up the company can appoint one or more directors to fulfill the statutory limit of 2....

Directors can be appointed by passing OR in GM. Separate resolution is passed to appoint the each director. In case you want to appoint one or more directors by single resolution then first a separate resolution u need to pass to appoint two directors through single resolution..

yes this is as per section 263 of  Companies act 1956..

No, u misunderstood my answer.. the above answer given by me earlier is as per the provisions of Sec 263. In case a company want to appoint a director in General Meeting (i.e normal case) then the quorum is formed by the members not the directors....

Generally there is no effect of presence of directors on the quorum limit  

I think u shud read out the concept of Quorum thoroughly..