A step down transformer reduces 220 V to 110 V. The primary draws 5 ampere of current and secondary supplies 9 ampere. The efficiency of transformer is

A transformer is employed to reduce 220V to 11V . The primary draws a current of 5A and the secondary 90A . The efficiency of the transformer is

A transformer is employed to reduce 220V to 11V . The primary draws a current of 5A and the secondary 90A . The efficiency of the transformer is

A step-down transformer is used to reduce 220V supply to 11V. The primary draws 5 A of current, while th secondary 90 A. The efficiency of the transformer is

A step down transformer is used to reduce the main supply of 200 V to 11 V. If the primary draws a current of 5 A and the secondary 90 A, what is the efficiency of the transformer ?

A transformer is used to step down mains supply of 220 V to 22 V. Its primary draws a current of 6 A and secondary draws a current of 50 A . Calculate the efficiency of the transformer .