Calculate the bandwidth in series RLC circuit if the frequency is 20 Hz and the quality factor is 5.(a) 2 Hz(b) 4 Hz(c) 6 Hz(d) 8 HzThis question was addressed to me in quiz.My doubt stems from Countercurrent Braking of DC Shunt Motors topic in chapter Braking of DC Motors & Induction Motors of Electric Drives

Calculate the bandwidth in series RLC circuit if the frequency is 20 H

1.	Calculate the bandwidth in series RLC circuit if the frequency is 20 Hz and the quality factor is 5.(a) 2 Hz(b) 4 Hz(c) 6 Hz(d) 8 HzThis question was addressed to me in quiz.My doubt stems from Countercurrent Braking of DC Shunt Motors topic in chapter Braking of DC Motors & Induction Motors of Electric Drives
Answer» Right answer is (b) 4 Hz For explanation I would SAY: BANDWIDTH is defined as the range of frequencies for which the signal exists. SELECTIVITY is INVERSELY proportional to the bandwidth. B.W(Hz)=f÷Q=20÷5=4 Hz.

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