The correct answer is: C. Electrolytic capacitor
Electrolytic capacitors are preferred in single phase motors because they have a higher capacitance than other types of capacitors. This is important because it allows the motor to start and run more smoothly. Electrolytic capacitors are also relatively inexpensive and easy to find.
Mica capacitors are not as good for single phase motors because they have a lower capacitance. This means that they cannot store as much energy, which can lead to problems with the motor starting and running smoothly. Paper capacitors are also not as good for single phase motors because they are not as durable. They can be damaged by heat and moisture, which can lead to problems with the motor. Ceramic capacitors are not as good for single phase motors because they have a higher resistance. This means that they can cause more power loss in the motor, which can lead to problems with the motor’s efficiency.
In conclusion, electrolytic capacitors are the best type of capacitor to use in single phase motors because they have a higher capacitance, are relatively inexpensive, and are easy to find.