How do you use transformer efficiency in problems? Is it just VsVp(Ns/Np)(efficiency) and IsIp(Np/Ns), or is it something more complicated? Does efficiency affect both Voltage and Current?
Transformer efficiency (usually between 85 to 98 percent) is more of a function of transferring power, I x E or I^2 x R. Usually with the transformer's secondary looking into some kind of Load. So, you would say that transformer efficiency is a function of (Ps / Pp) x 100, or [I x Es (rms) / I x Ep (rms)] x 100 effiiciency of the transformer. Efficiency factor affects both votlage and current (power) in exactly the same way.
The question contains the answers of 90 and 60, or did I miss something?
