What is the output voltage if an input signal is applied to the secondary winding of a 4:1 voltage step-down transformer instead of the primary winding?
The input voltage is multiplied by 4✓Ճիշտ պատասխան
The input voltage is divided by 4
Additional resistance must be added in series with the primary to prevent overload
Additional resistance must be added in parallel with the secondary to prevent overload
Բացատրություն
A transformer works in either direction, so driving the low-voltage winding of a 4:1 step-down transformer turns it into a 1:4 step-up and multiplies the input voltage by 4. Nothing about reversing the drive requires added resistance.