True or False: Large single phase motors have a larger drain on voltage at startup compared to three phase motors.

The statement is false because large single-phase motors typically draw a higher starting current, which can create a more significant voltage drop on the supply line during startup compared to three-phase motors. Single-phase motors often require a higher multiple of their full-load current when they start, which can lead to a substantial voltage drop in systems where the supply is not adequately sized.

On the other hand, three-phase motors are more efficient in their startup characteristics due to the nature of their design, resulting in a more balanced load and less of a demand on the electrical circuit during startup. They often have a smoother acceleration and reduced starting current in comparison to their single-phase counterparts because the three phases can share the load more evenly and improve overall performance.

Therefore, the correct conclusion is that large single-phase motors have a larger drain on voltage at startup compared to three-phase motors based on their design and operational characteristics.