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MCQs

Total Questions : 44 | Page 4 of 5 pages
Question 31. In electronic systems, repetitive-pulse waveforms are encountered.
  1.    More often than single pulses
  2.    Less often than single pulses
  3.    About as often as single pulses
  4.    Twice as often as single pulses
 Discuss Question
Answer: Option A. -> More often than single pulses
Question 32. To understand how the output voltage is shaped by a differentiator, you must consider
  1.    The response to the rising pulse edge
  2.    The response between the rising and falling edges
  3.    The response to the falling pulse edge
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 33. The flat portions of a pulse waveform contain low-frequency components.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 34. If the capacitor in an integrator becomes leaky.
  1.    The time constant will be effectively reduced
  2.    The wave-shape of the output voltage across C is altered
  3.    The amplitude of the output is reduced
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 35. A steady-state condition is reached when
  1.    The output voltage reaches the average value of the input voltage
  2.    The output voltage reaches the input voltage
  3.    The output voltage reaches approximately 63% of the input voltage
  4.    The output voltage reaches the effective value of the input voltage
 Discuss Question
Answer: Option A. -> The output voltage reaches the average value of the input voltage
Question 36.  An RL integrator and an RC differentiator can act as what types of filters, respectively?
  1.    low-pass, low-pass
  2.    low-pass, high-pass
  3.    high-pass, high-pass
  4.    high-pass, low-pass
 Discuss Question
Answer: Option B. -> low-pass, high-pass
Question 37.  In a repetitive-pulse RC integrator circuit, what would the steady-state voltage equal at the end of the fifth pulse? Assume a Vin of 20 V.
  1.    1.46 V
  2.    14.62 V
  3.    20 V
  4.    0 V
 Discuss Question
Answer: Option B. -> 14.62 V
Question 38.  For a capacitor to completely charge in an RC integrator, the pulse width must be _____ 5 time constants.
  1.    less than
  2.    greater than
  3.    equal to
  4.    greater than or equal to
 Discuss Question
Answer: Option D. -> greater than or equal to
Question 39.  What is a circuit that produces short-duration spikes?
  1.    A trigger pulse generator
  2.    An RL integrator
  3.    A timing circuit
  4.    A pulse waveform-to-dc converter
 Discuss Question
Answer: Option A. -> A trigger pulse generator
Question 40.  If the capacitor in an RC integrator shorts, the output
  1.    is at ground
  2.    would measure the same as the input
  3.    would measure zero volts
  4.    None of the above
 Discuss Question
Answer: Option A. -> is at ground

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