Final answer:
True, an electrolytic capacitor is used in single-phase two-value motors to provide the necessary phase shift for starting and to improve efficiency and torque during operation.
Step-by-step explanation:
An electrolytic capacitor is indeed used in single-phase two-value motors. This is true. Single-phase two-value capacitor motors use two capacitors: a start capacitor and a run capacitor. The start capacitor is used only at the beginning to provide the initial phase shift for the motor to start, while the run capacitor remains connected to the auxiliary winding and helps improve the motor's efficiency and torque characteristics during operation. The electrolytic start capacitor generally has a higher capacitance value compared to the run capacitor which may be of a different type, such as a film capacitor, designed for continuous duty.