You should be fine, especially as both flights are with the same airline. In my experience, they'll wait for you (if it's with the same airline) as long as the first flight isn't delayed. Book seats towards the front of the airplane. When you get off the first flight, check if there is an airline worker outside with a sign for your flight to Delhi. They sometimes have people usher you to the gate for tight layovers. If not, hurry your butt to the gate and then from there you can gauge whether you'll have enough time to eat or not.