Complex sentence: Mouni is a very popular actress in Indian television mainly known as Krishna Tulsi in the series "Kyunki Saas Bhi Kabhi Bahu Thi" and also as Goddess Sati in "Devon Ke Dev-Mahadev".
Split into simpler sentences: Mouni is a very popular actress in Indian television. She is mainly known for her role as Krishna Tulsi in the series "Kyunki Saas Bhi Kabhi Bahu Thi" and the role of Sati in "Devon Ke Dev-Mahadev".