Question

Calculate the quality factor for the R-C circuit connected in the cooling system if R=1 Ω and C=10 F.

(a) 0.1

(b) 0.2

(c) 0.3

(d) 0.4

I have been asked this question in my homework.

Query is from Motors topic in portion Rating and Heating of Motors of Electric Drives

Answer 1

The correct answer is (a) 0.1

For explanation: The quality factor is defined as the ratio of the reactive power to the active power consumed. The resistor always absorbs active power and capacitor absorbs the reactive power. Quality factor=1÷RC=1÷10=.1.