13 September 2014
There is a provision of Industrial training where you can pursue your articleship in a Company. Please explore www.icai.org to know more about Industrial training option.
You may also search on google about Industrial training.
18 September 2014
working in PSU is not counted as articleship except for the limited period of 1 year (max) as industrial trainee as mentioned by Ankur. Please note that this industrial training too has to be done as per provisions of ICAI. Just working in PSU without complying with ICAI rules wont be counted as articleship