A 480/120 VAC 3-phase transformer has impedance 10 Ω. Find the change in impedance when the primary voltage is reduced t
Posted: Fri Jul 08, 2022 6:27 am
A 480/120 VAC 3-phase transformer has impedance 10 Ω. Find thechange in impedance when the primary voltage is reduced to 400 VAC.[Assume the current stays the same. Answer: 3.5 Ω.]