Final answer:
Option B). False. A two-value capacitor is not commonly used in fan duty.
Step-by-step explanation:
The statement is False. A capacitor is a device that stores electric charge. It can be used for anything from energy storage in defibrillators to filtering static out of radio reception. It is uncommon to use a two-value capacitor for fan duty, though. Variable air capacitors are more frequently used in radio transmission and electronic device reception applications. Fan duty is the term used to describe the management and functioning of fans in diverse systems; capacitors are usually not involved. Hence, the given statement is false.