Basic Op-Amp Circuits 1 Questions and Answers

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Q1
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.
Answer: Option B
Q2
The output of a Schmitt trigger is a
  • A pulse waveform.
  • B sawtooth waveform.
  • C sinusoidal waveform.
  • D triangle waveform.
Answer: Option A
Q3
A comparator with a Schmitt trigger has
  • A two trigger levels.
  • B a fast response.
  • C a slow response.
  • D one trigger level.
Answer: Option A
Q4
In a(n) ________, when the input voltage exceeds a specified reference voltage, the output changes state.
  • A integrator
  • B differentiator
  • C summing amplifier
  • D comparator
Answer: Option D
Q5
In a flash A/D converter, the priority encoder is used to
  • A select the first input.
  • B select the highest value input.
  • C select the lowest value input.
  • D select the last input.
Answer: Option B
Q6
What circuit produces an output that approximates the area under the curve of an input function?
  • A integrator
  • B differentiator
  • C summing amplifier
  • D comparator
Answer: Option A
Q7
A good example of hysteresis is a(n)
  • A AM radio.
  • B thermostat.
  • C alarm clock.
  • D none of the above
Answer: Option B
Q8
To reduce the effects of noise resulting in erratic switching of output states of a comparator, you can use
  • A the upper trigger point.
  • B the lower trigger point.
  • C nonzero-level detection.
  • D hysteresis.
Answer: Option D
Q9
What is (are) the necessary component(s) for the design of a bounded comparator?
  • A rectifier diodes
  • B zener diodes
  • C both of the above
Answer: Option B
Q10
What type(s) of circuit(s) use comparators?
  • A summer
  • B nonzero-level detector
  • C averaging amplifier
  • D summer and nonzero-level detector
Answer: Option B

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