The Reserve Bank of India on Friday decided to keep the policy rate unchanged for the 11th time in a row but sharply lowered the GDP growth forecast to 6.6 per cent for the current fiscal, as against earlier projection of 7.2 per cent.The Reserve Bank of India (RBI) maintained the status quo on interest rate despite July-September quarter GDP growth falling to 7-quarter low of 5.4 per cent, as against its own projection of 7 per cent.