Ok so 1/f is the period which is 14.29ms. Then 30 is 8.333% of 360 so 8.333% of 14.29ms is 1.19ms and thats how long it conducts for right? So it supplies current to the load for 13.1ms?
For the second part I tried to put something together with the equations I could find in my notes >
Vpp = Discharge Time x (dVload/dt)
and (dVload/dt) = Iload/C
So C = Iload/(Vpp/Discharge Time) seems right but not sure how to find the discharge time, is that just the period?
If so, is C = 108.8mF ? Don't have a clue on how to get the power.