Which of the following is not a result of connecting a dual-voltage motor to operate on the higher voltage?

Connecting a dual-voltage motor to operate on the higher voltage does not necessarily result in an increased current draw. In fact, one of the advantages of operating a dual-voltage motor at a higher voltage is that it allows the motor to draw less current for the same power output. This is due to the power equation where power (P) is equal to voltage (V) multiplied by current (I). Therefore, increasing the voltage while maintaining the same power level results in a decrease in current draw.

When a dual-voltage motor is connected to a higher voltage, several changes occur. Increased efficiency can sometimes happen because the motor operates more effectively within its designed parameters. Power consumption can also be higher if the motor is under load; however, this aspect is closely related to how efficiently the motor operates under those conditions. The reduced life of the motor may factor in if it is not designed to handle the higher voltage properly or if it is consistently operating at higher loads than intended.

So, while the other options discussed reflect potential outcomes when altering the voltage connection, the choice indicating increased current draw is not valid when analyzing the implications of operating a dual-voltage motor at its higher setting.