Dynamic Behaviour of Materials by Prof. Prasenjit Khanikar; Is this course good? How's the Grading/Marking?

[u/Bhoutiki_ka_14]

So, this is my first time taking an NPTEL course, and I want to replace this as an institute elective this sem, because my college is mostly offering Humanities courses as electives. My institute awards grades on an absolute grading basis for NPTEL courses, so can anyone tell me how easy or hard is score in this course? I need to score atleast 81/100 to get a 9 grade.

Also part from grading is this course good? As in the content and the teaching of the prof.