Final answer:
The statement is false; large single-phase motors typically have a larger drain on voltage at startup than three-phase motors, and improving power factor is preferred over increasing voltage input for better output.
Step-by-step explanation:
The statement is False. Large single-phase motors often have a larger drain on voltage at startup than do three-phase motors. At the moment of turning on a motor, its back electromotive force (EMF) is zero, resulting in the coil receiving the full driving voltage. Consequently, the motor draws the maximum current when it is not turning. As the motor accelerates, back EMF builds up, opposing the driving EMF, and reduces both the voltage across the coil and the current it consumes. This inrush of current can cause lights in the same circuit to dim temporarily, which is a common phenomenon observed when high-current devices start up. Improving the power factor is a more effective method than increasing the voltage input to enhance motor's output, as it leads to better utilization of the electrical power without increasing the stress on the power source.