Time Response Of Reactive Circuits MCQ

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• A steady-state condition is reached when
  ক

  The output voltage reaches the average value of the input voltage

  খ

  The output voltage reaches the input voltage

  গ

  The output voltage reaches approximately 63% of the input voltage

  ঘ

  The output voltage reaches the effective value of the input voltage
• The flat portions of a pulse waveform contain low-frequency components.
  ক

  True

  খ

  False
• If the capacitor in an integrator becomes leaky.
  ক

  The time constant will be effectively reduced

  খ

  The wave-shape of the output voltage across C is altered

  গ

  The amplitude of the output is reduced

  ঘ

  All of the above
• To understand how the output voltage is shaped by a differentiator, you must consider
  ক

  The response to the rising pulse edge

  খ

  The response between the rising and falling edges

  গ

  The response to the falling pulse edge

  ঘ

  All of the above
• In electronic systems, repetitive-pulse waveforms are encountered.
  ক

  More often than single pulses

  খ

  Less often than single pulses

  গ

  About as often as single pulses

  ঘ

  Twice as often as single pulses
• If the RC time constant of an integrator is increased, as the time constant is increased.
  ক

  The capacitor charges more during a pulse and discharges less between pulses

  খ

  The capacitor charges less during a pulse and discharges more between pulses

  গ

  The capacitor charges more during a pulse and discharges more between pulses

  ঘ

  The capacitor charges less during a pulse and discharges less between pulses
• If the capacitor in an integrator opens, the output has the same voltage as the input.
  ক

  True

  খ

  False
• A dc component is the peak value of a pulse waveform.
  ক

  True

  খ

  False
• In an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant.
  ক

  Must be zero

  খ

  Must be equal to the applied voltage

  গ

  Is less than the applied voltage but greater than zero

  ঘ

  Cannot be determined
• In an RL differentiator, when the input pulse goes from its low level to its high level,
  ক

  The inductor prevents a sudden change in voltage

  খ

  The inductor prevents a sudden change in current

  গ

  Voltage across the inductor instantly reaches 63% of input voltage

  ঘ

  Voltage across the inductor is zero
• In an RC differentiator, the capacitor.
  ক

  Charges exponentially at a rate depending on the RC time constant

  খ

  Charges exponentially at a rate depending on the input voltage

  গ

  Charges when the input voltage is decreasing

  ঘ

  Charges to approximately one time constant
• The rising and falling edges of a pulse waveform contain the higher frequency component.
  ক

  True

  খ

  False
• An RC differentiator acts as a
  ক

  Low-pass filter

  খ

  High-pass filter

  গ

  Band-pass filter

  ঘ

  Band-stop filter
• With an RL integrator, at the instant of the rising pulse edge,
  ক

  All the input voltage is across the resistor

  খ

  All the input voltage is across the inductor

  গ

  63 percent of the input voltage is across the resistor

  ঘ

  63 percent of the input voltage is across the inductor
• In an RC integrating circuit, the output voltage is taken across the capacitor.
  ক

  True

  খ

  False
• In an RL differentiating circuit, the output voltage is taken across the resistor.
  ক

  True

  খ

  False
• In an RC differentiating circuit, the output voltage is taken across the resistor.
  ক

  True

  খ

  False
• In an RL integrating circuit, the output voltage is taken across the inductor.
  ক

  True

  খ

  False
• If a periodic pulse waveform has a pulse width and the time between pulses each equal to or greater than five time constants, the capacitor will
  ক

  Partially charge and fully discharge during each period of the input waveform

  খ

  Fully charge and partially discharge during each period of the input waveform

  গ

  Fully charge and fully discharge during each period of the input waveform

  ঘ

  Partially charge and partially discharge during each period of the input waveform
• In an RC differentiator, responding to repetitive pulses, the average value of the output.
  ক

  Is zero

  খ

  Is equal to the input voltage

  গ

  Is 63 percent of the input voltage

  ঘ

  Cannot be determined
• In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.
  ক

  True

  খ

  False
• In an integrator, when the pulse width of the input is much less than the transient time, the output voltage approaches the shape of the input.
  ক

  True

  খ

  False
• The output of an RC integrator is taken across the
  ক

  Diode

  খ

  Capacitor

  গ

  Resistor

  ঘ

  Source