Basic Op Amp Circuits » Exercise – 1
51. In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the Acl _______.
(a) reduced, equals one
(b) reduced, is less than one
(c) increased, is more than one
(d) increased, is much greater than one
52. The critical frequency for the active filter in the given circuit is approximately _______.
(a) 20.1 kHz
(b) 89.3 kHz
(c) 14.2 kHz
(d) 179 kHz
53. The given circuit is a two-pole, active ______ filter.
(a) high-pass
(b) low-pass
(c) band-pass
(d) band-stop
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555555555551. In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the Acl _______. (a) reduced, equals one (b) reduced, is less than one (c) increased, is more than one (d) increased, is much greater than one- 555555555552. The critical frequency for the active filter in the given circuit is approximately _______. (a) 20.1 kHz (b) 89.3 kHz (c) 14.2 kHz (d) 179 kHz
- 555555555553. The given circuit is a two-pole, active ______ filter. (a) high-pass (b) low-pass (c) band-pass (d) band-stop
- 555555555550. Above the critical frequency (fc) of a low-pass filter, the output voltage gain _______. (a) does not change (b) doubles for every 1 kHz increase in frequency (c) increases (d) decreases
- 555555555546. A comparator is an example of a(n) (a) active filter (b) current source (c) linear circuit (d) nonlinear circuit