Time Response Of Reactive Circuits(Electrical Engineering ) Questions and Answers

Question 1. Referring to Problem 7, how much will the capacitor charge if the pulse width is increased to 12 ms?
  1.    2.51 V
  2.    25.14 V
  3.    4.86 V
  4.    12.76 V
Explanation:-
Answer: Option B. -> 25.14 V
Question 2. The output of an RC integrator is taken across the
  1.    Diode
  2.    Capacitor
  3.    Resistor
  4.    Source
Explanation:-
Answer: Option B. -> Capacitor
Question 3. Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 Ω.
  1.    2.73 V
  2.    27.33 V
  3.    30 V
  4.    2.67 V
Explanation:-
Answer: Option B. -> 27.33 V
Question 4. In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.
  1.    True
  2.    False
Explanation:-
Answer: Option A. -> True
Question 5. 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.
  1.    True
  2.    False
Explanation:-
Answer: Option B. -> False
Question 6. In an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant.
  1.    Must be zero
  2.    Must be equal to the applied voltage
  3.    Is less than the applied voltage but greater than zero
  4.    Cannot be determined
Explanation:-
Answer: Option B. -> Must be equal to the applied voltage
Question 7. If the RC time constant of an integrator is increased, as the time constant is increased.
  1.    The capacitor charges more during a pulse and discharges less between pulses
  2.    The capacitor charges less during a pulse and discharges more between pulses
  3.    The capacitor charges more during a pulse and discharges more between pulses
  4.    The capacitor charges less during a pulse and discharges less between pulses
Explanation:-
Answer: Option D. -> The capacitor charges less during a pulse and discharges less between pulses
Question 8. If the capacitor in an integrator opens, the output has the same voltage as the input.
  1.    True
  2.    False
Explanation:-
Answer: Option A. -> True
Question 9. Referring this figure, on the falling edge.
  1.    The resistor voltage drops to -5 V and then goes back to zero exponentially
  2.    The resistor voltage jumps to -5 V and then goes back to zero exponentially
  3.    The capacitor voltage remains constant
  4.    The resistor voltage jumps to +5 V and then decreases exponentially to zero
Explanation:-
Answer: Option B. -> The resistor voltage jumps to -5 V and then goes back to zero exponentially
Question 10. A dc component is the peak value of a pulse waveform.
  1.    True
  2.    False
Explanation:-
Answer: Option B. -> False
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