A step-down transfomer reduces the supply voltage from 220 V to 11 V and increase the current from 6 A to 100 A. Then its efficiency 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 step-down transfomer reduces the voltage of a transmission line from 2200 V to 220 V. the power delivered by it is 880 W and its efficiency is 88%. The input current 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 stepdown transformer reduces the voltage of a transmission line from 2200V to 220V.The power delivered by it is 880 W and its efficiency is 88%.The input current is

A stepdown transformer reduces the voltage of a transmission line from 2200 V to 220 V. The power delivered by it is 880 W and its efficiency is 88%. The input current is

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