Question 104 of 151

A 220V input is supplied to a transformer.The output circuit draws a current of 2.0A at 440V. If the efficiency of the transformer is 80%, the current drawn by the primary windings of the transformer is 

(a) 3.6A                                        (b) 2.8A

(c) 2.5A                                        (d) 5.0A