21st
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Time Response of Reactive Circuits MCQ

Time Response of Reactive Circuits MCQ

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  • 21st Feb, 2023
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Time Response of Reactive Circuits MCQ Questions

Take Time Response of Reactive Circuits MCQ Test  to Test Your Knowledge

Practice here the best Time Response of Reactive Circuits MCQ Questions that checks your basic knowledge of Time Response of Reactive Circuits. This MCQ Test contains 20+ Multiple Choice Questions. You have to select the right answer to the question. Apart from this, you can also download here Time Response of Reactive Circuits MCQ PDF, completely free.

Time Response of Reactive Circuits MCQ Test

1) How to measure transient response time T in RC circuit, when R is the value of the resistor in ohms and C is the value of the capacitor in Farads?

  • A. R x C, in seconds
  • B.R/C, in seconds
  • C.R - C, in seconds
  • D.R + C, in seconds

2) A steady-state condition is reached when the output voltage reaches ______.

  • A. the average value of the input voltage
  • B.approximately 63% of the input voltage
  • C.the effective value of the input voltage
  • D.the input voltage

3) An RC differentiator acts as a ____.

  • A. low-pass filter
  • B.band-pass filter
  • C.high-pass filter
  • D.band-stop filter

4) What is the average value of the output in an RC differentiator, responding to repetitive pulses?

  • A. is zero
  • B.is equal to the input voltage
  • C.is 63 percent of the input voltage
  • D.cannot be determined

5) The output of an RC integrator is taken across the _.

  • A. diode
  • B.capacitor
  • C.resistor
  • D.source

6) In an RC differentiator, the sum of the capacitor voltage and the resistor voltage at any instant ____.

  • A. must be zero
  • B.must be equal to the applied voltage
  • C.cannot be determined
  • D.is less than the applied voltage but greater than zero

7) The expression of current in R- C circuit is?

  • A. i=(V/R)exp⁡(t/RC )
  • B.i=(V/R)exp⁡(-t/RC )
  • C.i=(V/R)-exp(⁡t/RC )
  • D.i=(V/R)-exp⁡(-t/RC )

8) In an R-C circuit, when the switch is closed, the response ____.

  • A. do not vary with time
  • B.decays with time
  • C.rises with time
  • D.first increases and then decreases

9) Determine the voltage across the capacitor in the circuit shown in the question 6 is?

  • A. VC =60(1-e-t )V
  • B.VC =60(1+e-t )V
  • C.VC =60(1-et )V
  • D.VC =60(1+et )V

10) The rising and falling edges of a pulse waveform contain the higher frequency component.

  • A. True
  • B.False

11) The flat portions of a pulse waveform contain low-frequency components.

  • A. True
  • B.False

12) What is the highest frequency contained in a pulse that has a rise and fall time equal to 10 microseconds (10 s)?

  • A. 35 kHz
  • B.3.5 kHz
  • C.10 kHz
  • D.100 kHz

13) If the capacitor in an integrator becomes leaky:

  • A. the time constant will be effectively reduced
  • B.the waveshape of the output voltage across C is altered
  • C.the amplitude of the output is reduced
  • D.All of the above

14) After how many time constants, the transient part reaches more than 99 percent of its final value?

  • A. 2
  • B.3
  • C.4
  • D.5

15) If the RC time constant of an integrator is increased, as the time constant is increased ___.

  • A. the capacitor charges less during a pulse and discharges less between pulses
  • B.the capacitor charges more during a pulse and discharges less between pulses
  • C.the capacitor charges less during a pulse and discharges more between pulses
  • D.the capacitor charges more during a pulse and discharges more between pulses

16) To understand how the output voltage is shaped by a differentiator, you must consider ___.

  • A. the response to the rising pulse edge
  • B.the response between the rising and falling edges
  • C.the response to the falling pulse edge
  • D.All of the above

17) An integrator consists of a 3.3 k resistor and a 2 F capacitor. A single 30 V, 6 µs pulse is applied to the input. How much will the capacitor charge?

  • A. 10.3 V
  • B.17.91 V
  • C.12.09 V
  • D.30 V C

18) With an RL integrator, at the instant of the rising pulse edge:

  • A. all the input voltage is across the resistor
  • B.all the input voltage is across the inductor
  • C.63 percent of the input voltage is across the resistor
  • D.63 percent of the input voltage is across the inductor

19) What is Time Response?

  • A. output of control system for an input varies with respect to time
  • B.input of control system with respect to time
  • C.Both A and B
  • D.None of the above

20) In an RL differentiator, when the input pulse goes from its low level to its high level, ___.

  • A. Voltage across the inductor instantly reaches 63% of input voltage
  • B.Voltage across the inductor is zero
  • C.The inductor prevents a sudden change in voltage B.
  • D.The inductor prevents a sudden change in current

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