The hours of unsupervised learning or training deemed necessary to cover the educational material associated with the delivery of a training program. These hours include the time spent in work experience, industry placement or field placement.

The total number of hours involved in course delivery. See also Nominal hours (supervised), Nominal hours (unsupervised) and Typical attendance.

The hours of supervised learning or training deemed necessary to cover the educational material in a training program when undertaken in standard classroom delivery mode.

Meaning of nominal hours in a given course duration
I find it pretty difficult to calculate the given credit hours. Again, what is notional hours in instruction of students doing a diploma in mechanical engineering. I find a real task of a challenge and so, I need your kind assistance in this matter