Author Question: A three-stage filter has power gains of Filter 1 = 0.79, Filter 2 = 0.46, and Filter 3 = 0.32. The ... (Read 129 times)

AEWBW · **on:** Jul 28, 2018

A three-stage filter has power gains of Filter 1 = 0.79, Filter 2 = 0.46, and Filter 3 = 0.32. The total dB power gain is

A) 1.57 dB B) -18.7 dB C) -1.57 dB D) -9.34 dB

Question 2

Three components are in series across a sine wave ac source: an L of 12 mH with an internal resistance (RW) of 6 , a 47 nF capacitor, and an RL of 120 . The resonant frequency of the circuit is

A) 5.7 kHz B) 6.7 kHz C) 573 Hz D) 3.4 kHz