Jawabanmu

2014-03-25T19:34:03+07:00
V1/v2 = n1/n2 
220/110 = 150/x
150/2 =x
75 = x
jadi trafo itu step down karena v1>v2
2014-03-25T19:53:44+07:00
V1 > V2
sorry y g q tlis carax