Basic Op Amp Circuits » Exercise – 1
1. A Schmitt trigger is
(a) a comparator with only one trigger point.
(b) a comparator with hysteresis.
(c) a comparator with three trigger points.
(d) none of the above.
2. The output of a Schmitt trigger is a
(a) pulse waveform.
(b) sawtooth waveform.
(c) sinusoidal waveform.
(d) triangle waveform.
- Operational Amplifier Fundamentals » Exercise - 5 201. The 555 timer can be connected to operate a(n) ___________. (a) astable multivibrator (b) bistable multivibrator (c) monostable multivibrator (d) astable multivibrator and a monostable multivibrator 202. An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ . (a) PLL (b) Schmitt trigger (c) VCO (d) S-R latch 203. If the input to a comparator is a sine wave, the output is a(n) _________. (a) ramp voltage (b) sine wave (c) sawtooth wave (d) rectangular wave 204. An op-amp circuit in which the output voltage is equal to the difference between the two input voltages is called a(n) _____ (a) integrator (b) differentiator (c) differential amplifier (d) voltage regulator 205. A virtual ground is a(n) ______ ground because this point is at zero volts. (a) ordinary (b) voltage (c) chassis (d) earth