Final answer:
Autotransformers can indeed select the amount of voltage sent to the transformer, which makes the statement True. The primary voltage in a step-down transformer is higher than the secondary voltage.
Step-by-step explanation:
The question pertains to autotransformers and their ability to select the amount of voltage sent to the transformer. The statement posed in the question is True; autotransformers can select the amount of voltage. In a step-down transformer, which is a particular type of transformer, the primary voltage is higher than the secondary voltage, and the primary current is lower than the secondary current. This is because the output voltage of a transformer can be varied and is dependent on the ratio of the number of turns or loops in the transformer's coils. Autotransformers can regulate output voltage by making connections at different points on the coil, thus enabling them to 'select' the voltage that is output.