Time Response Of Reactive Circuits MCQs with Explanations
Practice high-yield Electrical Engineering MCQs on Time Response Of Reactive Circuits with worked academic solutions for WAPDA, NTDC, IESCO, LESCO, PPSC, FPSC.
Questions
35
Difficulty Level
Exam-Level
Target Exams
WAPDA, NTDC, IESCO...
Estimated Time
42 mins
Exam-Level WAPDA NTDC IESCO LESCO PPSC FPSC
Verified for Commission Syllabus • Oct 14, 2026
35
Verified Practice Questions
Interactive test mode with detailed academic worked solutions
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🎉 Set complete! All 35 questions answered.
Question 1 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
Referring to Problem 7, how much will the capacitor charge if the pulse width is increased to 12 ms?
Correct Answer: Option B — 25.14 V
Detailed Academic Explanation:
25.14 V is the correct answer to “Referring to Problem 7, how much will the capacitor charge if the pulse width is increased to 12 ms”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 2 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
The output of an RC integrator is taken across the
Correct Answer: Option B — Capacitor
Detailed Academic Explanation:
Capacitor is the correct answer to “The output of an RC integrator is taken across the”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 3 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 Ω.
Correct Answer: Option B — 27.33 V
Detailed Academic Explanation:
27.33 V is the correct answer to “Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 Ω.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 4 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
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.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “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.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 5 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 6 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RC differentiator, responding to repetitive pulses, the average value of the output.
Correct Answer: Option A — Is zero
Detailed Academic Explanation:
Is zero is the correct answer to “In an RC differentiator, responding to repetitive pulses, the average value of the output.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 7 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
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
Correct Answer: Option C — Fully charge and fully discharge during each period of the input waveform
Detailed Academic Explanation:
Fully charge and fully discharge during each period of the input waveform is the correct answer to “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”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 8 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RL integrating circuit, the output voltage is taken across the inductor.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “In an RL integrating circuit, the output voltage is taken across the inductor.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 9 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RC differentiating circuit, the output voltage is taken across the resistor.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “In an RC differentiating circuit, the output voltage is taken across the resistor.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 10 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RL differentiating circuit, the output voltage is taken across the resistor.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “In an RL differentiating circuit, the output voltage is taken across the resistor.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 11 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to.
Correct Answer: Option D — 7.56 V
Detailed Academic Explanation:
7.56 V is the correct answer to “When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 12 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
When a 24 V input pulse with a width equal to five time constants is applied to an RC integrator, the capacitor charges to
Correct Answer: Option A — 24 V
Detailed Academic Explanation:
24 V is the correct answer to “When a 24 V input pulse with a width equal to five time constants is applied to an RC integrator, the capacitor charges to”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 13 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to
Correct Answer: Option B — 12.9 V
Detailed Academic Explanation:
12.9 V is the correct answer to “When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 14 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
Referring to the bellow figure, determine the voltage level that the output will reach during the pulse.
Correct Answer: Option D — 9.45 V
Detailed Academic Explanation:
9.45 V is the correct answer to “Referring to the bellow figure, determine the voltage level that the output will reach during the pulse.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 15 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RC integrating circuit, the output voltage is taken across the capacitor.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “In an RC integrating circuit, the output voltage is taken across the capacitor.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 16 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
With an RL integrator, at the instant of the rising pulse edge,
Correct Answer: Option B — All the input voltage is across the inductor
Detailed Academic Explanation:
All the input voltage is across the inductor is the correct answer to “With an RL integrator, at the instant of the rising pulse edge,”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 17 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
An RC differentiator acts as a
Correct Answer: Option B — High-pass filter
Detailed Academic Explanation:
High-pass filter is the correct answer to “An RC differentiator acts as a”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 18 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
The rising and falling edges of a pulse waveform contain the higher frequency component.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “The rising and falling edges of a pulse waveform contain the higher frequency component.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 19 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
A single 6 V pulse with a width of 600 μs is applied to an integrator consisting of a 150 kΩ resistor and a 0.002 μF capacitor. To what voltage will the capacitor charge?
Correct Answer: Option C — 5.16 V
Detailed Academic Explanation:
5.16 V is the correct answer to “A single 6 V pulse with a width of 600 μs is applied to an integrator consisting of a 150 kΩ resistor and a 0.002 μF capacitor. To what voltage will the capacitor charge”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 20 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
An integrator consists of a 3.3 kΩ resistor and a 2 μF capacitor. A single 30 V, 6 ms pulse is applied to the input. How much will the capacitor charge?
Correct Answer: Option D — 17.91 V
Detailed Academic Explanation:
17.91 V is the correct answer to “An integrator consists of a 3.3 kΩ resistor and a 2 μF capacitor. A single 30 V, 6 ms pulse is applied to the input. How much will the capacitor charge”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 21 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RC differentiator, the capacitor.
Correct Answer: Option A — Charges exponentially at a rate depending on the RC time constant
Detailed Academic Explanation:
Charges exponentially at a rate depending on the RC time constant is the correct answer to “In an RC differentiator, the capacitor.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 22 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
What is the highest frequency contained in a pulse that has a rise and fall time equal to 10 microseconds (10 μs)?
Correct Answer: Option A — 35 kHz
Detailed Academic Explanation:
35 kHz is the correct answer to “What is the highest frequency contained in a pulse that has a rise and fall time equal to 10 microseconds (10 μs)”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 23 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
Referring to the give circuit, the output will.
Correct Answer: Option A — Decay to zero at the end of the pulse
Detailed Academic Explanation:
Decay to zero at the end of the pulse is the correct answer to “Referring to the give circuit, the output will.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 24 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RL differentiator, when the input pulse goes from its low level to its high level,
Correct Answer: Option B — The inductor prevents a sudden change in current
Detailed Academic Explanation:
The inductor prevents a sudden change in current is the correct answer to “In an RL differentiator, when the input pulse goes from its low level to its high level,”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 25 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
Referring to Problem 5, how long will it take the capacitor to discharge if the internal resistance of the pulse source is 100 Ω?
Correct Answer: Option D — 1.5 ms
Detailed Academic Explanation:
1.5 ms is the correct answer to “Referring to Problem 5, how long will it take the capacitor to discharge if the internal resistance of the pulse source is 100 Ω”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 26 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant.
Correct Answer: Option B — Must be equal to the applied voltage
Detailed Academic Explanation:
Must be equal to the applied voltage is the correct answer to “In an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 27 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
Referring this figure, on the falling edge.
Correct Answer: Option B — The resistor voltage jumps to -5 V and then goes back to zero exponentially
Detailed Academic Explanation:
The resistor voltage jumps to -5 V and then goes back to zero exponentially is the correct answer to “Referring this figure, on the falling edge.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 28 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
A dc component is the peak value of a pulse waveform.
Correct Answer: Option B — False
Detailed Academic Explanation:
False is the correct answer to “A dc component is the peak value of a pulse waveform.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 29 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
If the capacitor in an integrator opens, the output has the same voltage as the input.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “If the capacitor in an integrator opens, the output has the same voltage as the input.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 30 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
If the RC time constant of an integrator is increased, as the time constant is increased.
Correct Answer: Option D — The capacitor charges less during a pulse and discharges less between pulses
Detailed Academic Explanation:
The capacitor charges less during a pulse and discharges less between pulses is the correct answer to “If the RC time constant of an integrator is increased, as the time constant is increased.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 31 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
In electronic systems, repetitive-pulse waveforms are encountered.
Correct Answer: Option A — More often than single pulses
Detailed Academic Explanation:
More often than single pulses is the correct answer to “In electronic systems, repetitive-pulse waveforms are encountered.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 32 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
To understand how the output voltage is shaped by a differentiator, you must consider
Correct Answer: Option D — All of the above
Detailed Academic Explanation:
All of the above is the correct answer to “To understand how the output voltage is shaped by a differentiator, you must consider”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 33 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
If the capacitor in an integrator becomes leaky.
Correct Answer: Option D — All of the above
Detailed Academic Explanation:
All of the above is the correct answer to “If the capacitor in an integrator becomes leaky.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 34 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
The flat portions of a pulse waveform contain low-frequency components.
Correct Answer: Option A — True
Detailed Academic Explanation:
True is the correct answer to “The flat portions of a pulse waveform contain low-frequency components.”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
Question 35 of 35
★ WAPDA
★ NTDC
★ WAPDA
★ NTDC
A steady-state condition is reached when
Correct Answer: Option A — The output voltage reaches the average value of the input voltage
Detailed Academic Explanation:
The output voltage reaches the average value of the input voltage is the correct answer to “A steady-state condition is reached when”. This question is standard in competitive examination syllabi for Time Response Of Reactive Circuits.
💡Key Conceptual Anchor:Time Response Of Reactive Circuits
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A_C Fundamentals_ Circuits And Circuit Theory — Part 1
Master the next curriculum module with 40 exam-standard MCQs.
In competitive commission exams (FPSC, PPSC, KPPSC, SPSC, CSS, PMS), questions are frequently phrased with distractor options designed to catch rote learners. Whenever you answer an MCQ, read the Detailed Academic Explanation and Conceptual Anchor to understand why the remaining options are incorrect.