dear shini
in the case of any new machinery or plant (other than ships and aircraft), which has been acquired and installed after the 31st day of March, 2005, by an assessee engaged in the business of manufacture or production of any article or thing, a further sum equal to twenty per cent of the actual cost of such machinery or plant shall be allowed as deduction.
the word used is acquired and installed. u can claim depreciation in next year according to the section.