A transformer cannot raise or lower the voltage of a D.C. supply because Faraday's laws of electromagnetic induction are not valid since the rate of change of flux is zero.
Description : In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of?
Description : In an actual transformer the iron loss remains practically constant from no load to full load because?
Description : The secondary of a current transformer is always short-circuited under operating conditions because it?