The expected answers were:
(a)
(b) (i) average value = 0.637 x peak value
= 0.637 x 4 x 103 = 2.55 kV
(ii) r.m.s. value = 0.707 x peak value
= 0.707 x 4 x 103 = 2.83 kV
The question was on Alternating Current Circuit Theory. Many candidates who attempted this question performed very well. The performance was reported good.