What is difference between power loom fabric and auto loom fabric?

there is no difference actually. A cotton mill has many power looms. A power loom is a machine that weaves clothes and 15 to 20 power looms are present in a mill.

In small scale mills, only 2-3 power looms or 12-13 hand looms (machine that weaves clothes by hand) are present. hand made cotton is of better quality but production is low.