sir i have doubt in my mind that why cont we produce power from using power in the generator instead of using?

No.

Energy can't be reused. One of the fundamental laws of thermodynamics states no energy transformation is 100% efficient. Some energy is always lost, usually in the form of heat. This makes it impossible for an electric motor to provide it's own electricity by acting both as a motor which consumes energy and a dynamo which produces it.

I think I understand what he's trying to say.

No it won't be possible because you can't produce energy from nothing. There has to be an expenditure to produce the energy in the first place. Generators work on input that can come from petroleum or sunlight or water gravity action they need something to interact with them in order to produce power for usage.

Your idea is to turn on a generator and plug it into itself, that won't work because it won't produce any energy at that point and it will slowly come to a grinding halt. What you propose is free energy which does not exist. A perpetual motion machine would be the closest thing you can get to that and it is against the laws of Thermal Dynamics.

Simply, it can't happen.

It sounds like you are trying to make a perpetual motion machine. It will not work. You cannot take power form the power line and restore it and yet still do some work with it without some net drawing of power from the power line.

Energy can neither be created nor destroyed but energy can be converted from one form to another. Heat energy from a furnace is used in a boiler to produce steam that drives a steam turbine that produces mechanical energy which is converted to electrical energy in a generator that is supplied to an electric motor to produce mechanical energy (perhaps to machine steel). All the same original energy is converted at each step and is used up in deforming the steel which produces heat energy that is lost to the environment. There is no energy left over to send back to the generator.

This falls under perpetual motion. Not possible.

I'm sorry - I think you will need to find somebody to translate this idea into english differently - I can't understand what it is you are proposing.