The market has opened strong following global cues. The Sensex is up 196.45 points or 0.6 percent at 28634.16, and the Nifty up 55.95 points or 0.6 percent at 8689.10. About 412 shares have advanced, 65 shares declined, and 89 shares are unchanged.
BHEL, Dr Reddy's Labs, Sesa Sterlite, ITC and Tata Power are top gainers in the Sensex. Among the losers are Cipla, Infosys and NTPC.
The Indian rupee opened marginally higher at 62.77 per dollar on Tuesday versus 62.81 Monday.
The dollar is up 24 percent against a basket of currencies since May and it could become a key issue at this week's Fed monetary policy meeting.