A transformer having efficiency of 90 % is working on 200 V and 3 k W power supply. If the current in the secondary coil is 6 A the voltage across the secondary coil and the current in the primary coi

Question

A transformer having efficiency of 90 % is working on 200 V and 3 k W power supply. If the current in the secondary coil is 6 A the voltage across the secondary coil and the current in the primary coil respectively are:NEET 2014

TestHub · Accepted Answer

Current in primary coil = P V = 3000 200 = 15 A P o u t = η % o f P i n V 2 i 2 = 90 100 × 3000 V 2 6 = 2700 V 2 = 450 v o l t

Physics - EMI/AC Question with Solution | TestHub

Options:

Doubts & Discussion