It was the second national title for World Championship bronze medallist Sindhu after she registered a straight-game victory over Rituparna Das in the women's singles summit clash which lasted for half an hour.
However, it was a maiden title for Thailand Open Grand Prix Gold winner Srikanth, who dug deep into his reserves to get the better off RMV Gurusaidutt in a 40-minute men's singles contest.
While second seed Sindhu, who is currently ranked 11th in the world, defeated Rituparna 21-11 21-17, Srikanth beat Guru 21-13 22-20 at the Siri Fort Sports Complex.
In the men's doubles competition, top seeds Pranaav Jerry Chopra and Akshay Dewalkar clinched the title with a 21-19 21-17 win over second seeds Manu Attri and Sumeeth Reddy B in a 39-minute contest.
Second seeds Arun and Aparna defeated top seeds Tarun Kona and Ashwini Ponnappa 21-10 21-17 within half an hour, while second seeded pair of Jwala and Ashwini prevailed over top seeds Pradnya Gadre and Siki Reddy N 21-17 21-16 in a 34-minute match.