Question

2. In particular, all these capacitors also read low compared to their advertised values. "Fresh" capacitors can often be both higher or lower than advertised. But in electrolytic capacitors, one of the "plates" of the capacitor is made of a dielectric paste, whose properties can change over time as the paste dries out. When this happens, the capacitance of the device usually drops. Given that this can happen, explain why it may be necessary to independently measure the capacitance of a device before using it, even if it advertises a very precise tolerance. Give an example of a problem that could be caused if a scientist or engineer assumed the advertised value of the capacitor was correct, but it was in fact much lower. B I U I fx

Answer 1

Capacitor is used in motor . Here capacitor provide starting energy to device . If the value of capacitance is lower then it cannot able to provide required energy to motor at starting time and motor fail to start ..

So many device is based on charging and discharging time of capacitor . If value of capacitance is lower then time constant is change is also less and device fail to work.