Tata Consultancy Services would be first IT major to declare its Q3 quarter results on Tuesday. Generally Infosys would be the first IT firm to declare its result. Analysts expect TCS to post a decline consolidated net profit by 1-4 per cent but hope revenues to rise marginally. Shares of IT firms, which have been on the decline in the last three months, would see a revival if TCS beats street estimates. TCS results may come post market hours.