17. An RC network has a roll-off of 20 dB per decade. What is the total attenuation between the output voltage in the midrange of the passband as compared to the output voltage at a frequency of 10 times fc?
(a) –3 dB (b) –20 dB (c) –23 dB (d) –43 dB
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
555555555526. An amplifier has an input signal voltage of 0.054 mV. The output voltage is 12.5 V. The voltage gain in dB is (a) 53.6 dB. (b) 107.3 dB. (c) 231 dB. (d) 116 dB.
Tags: db, voltage, amplifier, frequency, response, gain, electronics, engineering
555555555525. An amplifier rated at 30-W output is connected to a 5- speaker. Calculate the input voltage for the rated output if the amplifier voltage gain is 20 dB. (a) 1.225 mV (b) 12.25 mV (c) 122.5 mV (d) 1.225 V
Tags: amplifier, voltage, frequency, response, gain, db, electronics, engineering