What voltage will a piece of foreign-made equipment rated for 220 volts receive if the supply circuit voltage is 206 volts and Diagram 4 is used to connect a transformer?

When connecting a transformer to supply a piece of equipment, the output voltage will depend on the turns ratio of the transformer and the input supply voltage. In this scenario, the foreign-made equipment is rated for 220 volts, but the supply circuit voltage is lower at 206 volts.

Using a typical step-up transformer configuration, if the turns ratio is set to increase the voltage from the supply voltage to the desired level for the equipment, the actual output voltage will be calculated based on this ratio, applied to the lower input voltage.

If Diagram 4 specifies that the transformer has an adequate turns ratio for stepping up the 206 volts to 220 volts—or higher, due to its rated output—this means it can increase the voltage effectively above the supply voltage. The choice of 233 volts suggests that the transformer configuration is designed to boost the voltage sufficiently above the rated level, thus providing the equipment with more than just 220 volts.

While it's essential to keep equipment within its rated voltage to prevent damage or failure, the setup in this transformer connection allows for an output of 233 volts, assuming that the turns ratio and transformer condition are appropriate. Understanding the transformer’s operation and how it relates to the input voltage is crucial in determining the correct