Dear Friend
In the following case, the directors can not be removed by shareholders under section 284 of the Companies Act, 1956:
1. Director appointed by the Central Government u/s 408
2. Directors holding office for life in private companies as on 1.4.1952
3. Directors appointed by the system of proportional representation under section 265
4. Directors appointed by Government in pursuance of any statutory provisions such as, under IDRA, 1951, or SICA, 1985
5. Directors appointed by any financial institution where the special statute governing such financial institution overrides the provisions of this Act.
Regards