555555555524. The critical frequency is defined as the point at which the response drops ________ from the passband. (a) –20 dB (b) –3 dB (c) –6 dB (d) –40 dB
5555555555 59. At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is ________. (a) 6.02 dB (b) –6.02 dB (c) 12.04 dB (d) –12.04 dB
555555555576. A certain op-amp has an open-loop voltage gain of 150,000. What is this gain expressed in dB? (a) 51.7 dB (b) 103.5 dB (c) 150,000 dB (d) 5.18 dB