Question

Given that, h = sino sin(wt – 5r)ag and B; = 20jaz + 10ej2mx/3 ay, a) Determine the phasor form of H b) Determine the instantaneous form of Bs. (31 (41

Answer 1

Sov: a) ha sino sin lut - Solo Phasor form = ? we know that cos190°-o) = sino or cos [-10-90°)) = sino cos Lo-go = sino ( 8 ی ما = (2 - ايم) .. ) =) H= sino cos (wt-so-go)ão ४ =) H = Refsing -soj ejut. е. e-gej gão wt e jo = cosgot j sino & Re Leio) = cose Real part of eie o coso :) H = Re [Hs e at whee Hy Phasor form of H e-583, e-gog 0 a Hs = sino Los got - jsingo' = o- j = og :) Hs = sino ao -goj = e e-iso jão This is the phasor form of H. b) Bs : lojänt to e jânt to ea 21 na ay Instantaneous form by Bs. J. 28 n ayat B = Re (Bs ejut ] = Re (Qoj ân + lo e write 2og. jas goj = cos go tj sin go = gol е, we tan . e et e just ay ] =) Be Re (200 Tan & lo e 136 twt)j ant 10 e 12m twt hi ay] & Bi Re £20 e B = 20 cos 19o twt) ant lo cos (2an twt 3 ay 3 Instantaneous form of ls