Thickness of a transformer core lamination is in the order of O2.0 mm O 1.5 mm O 0.5 mm O 2.5 mm O 1.0 mm QUESTION 26 In an autotransformer the resistance between its primary and secondary is O infinite O 500 Ohm O 1500 Ohm o low o unpredictable QUESTION 27 The main purpose of using an iron in a transformer is to: 0a decrease Pe Ob increase flux Oc decrease Pcu Oa decrease m oebad