78 + Mcqs in Time Response Of Reactive Circuits Page 1 McqOptions

1.	If the capacitor in an integrator shorts, the output
A.	is at ground
B.	would measure the same as the input
C.	would measure zero volts
D.	None of the above
Answer» B. would measure the same as the input

Discussion

2.	An integrator and an differentiator can act as what types of filters, respectively?
A.	low-pass, low-pass
B.	low-pass, high-pass
C.	high-pass, high-pass
D.	high-pass, low-pass
Answer» C. high-pass, high-pass

Discussion

3.	In a repetitive-pulse integrator circuit, what would the steady-state voltage equal at the end of the fifth pulse? Assume a of 20 V.
A.	1.46 V
B.	14.62 V
C.	20 V
D.	0 V
Answer» C. 20 V

Discussion

4.	If the output of an integrator is zero volts, the capacitor might be open.
A.	True
B.	False
Answer» C.

Discussion

5.	The voltage across a capacitor in an integrator circuit cannot change exponentially; it can change only instantaneously.
A.	True
B.	False
Answer» C.

Discussion

6.	If a repetitive-pulse waveform is applied to an integrator, the output waveshape depends on the relationship of the circuit time constant and the duty cycle of the input pulses.
A.	True
B.	False
Answer» C.

Discussion

7.	A repetitive pulse with a 50% duty cycle is being applied to the input of an integrator. If one time constant is less than one-fifth the pulse width, the capacitor will be able to fully charge and discharge.
A.	True
B.	False
Answer» B. False

Discussion

8.	A(n) _____ will decrease the time constant in an integrator or differentiator.
A.	open resistor
B.	open capacitor
C.	shorted capacitor
D.	leaky capacitor
Answer» E.

Discussion

9.	For a capacitor to completely charge in an integrator, the pulse width must be _____ 5 time constants.
A.	less than
B.	greater than
C.	equal to
D.	greater than or equal to
Answer» E.

Discussion

10.	In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.
A.	True
B.	False
Answer» B. False

Discussion

11.	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.
A.	True
B.	False
Answer» C.

Discussion

12.	Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 Ω.
A.	2.73 V
B.	27.33 V
C.	30 V
D.	2.67 V
Answer» C. 30 V

Discussion

13.	The output of an RC integrator is taken across the
A.	Diode
B.	Capacitor
C.	Resistor
D.	Source
Answer» C. Resistor

Discussion

14.	Referring to Problem 7, how much will the capacitor charge if the pulse width is increased to 12 ms?
A.	2.51 V
B.	25.14 V
C.	4.86 V
D.	12.76 V
Answer» C. 4.86 V

Discussion

15.	In an RC integrating circuit, the output voltage is taken across the capacitor.
A.	True
B.	False
Answer» B. False

Discussion

16.	Referring to the bellow figure, determine the voltage level that the output will reach during the pulse.
A.	0 V
B.	15 V
C.	6.3 V
D.	9.45 V
Answer» E.

Discussion

17.	When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges to
A.	15 V
B.	12.9 V
C.	8.6 V
D.	19.45 V
Answer» C. 8.6 V

Discussion

18.	When a 24 V input pulse with a width equal to five time constants is applied to an RC integrator, the capacitor charges to
A.	24 V
B.	15.12 V
C.	20.64 V
D.	12 V
Answer» B. 15.12 V

Discussion

19.	When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to.
A.	0 V
B.	12 V
C.	6.3 V
D.	7.56 V
Answer» E.

Discussion

20.	In an RL differentiating circuit, the output voltage is taken across the resistor.
A.	True
B.	False
Answer» C.

Discussion

21.	In an RC differentiating circuit, the output voltage is taken across the resistor.
A.	True
B.	False
Answer» B. False

Discussion

22.	In an RL integrating circuit, the output voltage is taken across the inductor.
A.	True
B.	False
Answer» C.

Discussion

23.	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
A.	Partially charge and fully discharge during each period of the input waveform
B.	Fully charge and partially discharge during each period of the input waveform
C.	Fully charge and fully discharge during each period of the input waveform
D.	Partially charge and partially discharge during each period of the input waveform
Answer» D. Partially charge and partially discharge during each period of the input waveform

Discussion

24.	In an RC differentiator, responding to repetitive pulses, the average value of the output.
A.	Is zero
B.	Is equal to the input voltage
C.	Is 63 percent of the input voltage
D.	Cannot be determined
Answer» B. Is equal to the input voltage

Discussion

25.	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?
A.	10.3 V
B.	30 V
C.	12.09 V
D.	17.91 V
Answer» E.

Discussion

26.	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?
A.	0 V
B.	3.78 V
C.	5.16 V
D.	6 V
Answer» D. 6 V

Discussion

27.	The rising and falling edges of a pulse waveform contain the higher frequency component.
A.	True
B.	False
Answer» B. False

Discussion

28.	An RC differentiator acts as a
A.	Low-pass filter
B.	High-pass filter
C.	Band-pass filter
D.	Band-stop filter
Answer» C. Band-pass filter

Discussion

29.	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
Answer» C. 63 percent of the input voltage is across the resistor

Discussion

30.	Referring to Problem 5, how long will it take the capacitor to discharge if the internal resistance of the pulse source is 100 Ω?
A.	300 μs
B.	600 μs
C.	900 μs
D.	1.5 ms
Answer» E.

Discussion

31.	In an RL differentiator, when the input pulse goes from its low level to its high level,
A.	The inductor prevents a sudden change in voltage
B.	The inductor prevents a sudden change in current
C.	Voltage across the inductor instantly reaches 63% of input voltage
D.	Voltage across the inductor is zero
Answer» C. Voltage across the inductor instantly reaches 63% of input voltage

Discussion

32.	Referring to the give circuit, the output will.
A.	Decay to zero at the end of the pulse
B.	Reach 6 V at the end of the pulse
C.	Reach 3.78 V at the end of the pulse
D.	Reach 5.16 V at the end of the pulse
Answer» B. Reach 6 V at the end of the pulse

Discussion

33.	What is the highest frequency contained in a pulse that has a rise and fall time equal to 10 microseconds (10 μs)?
A.	35 kHz
B.	3.5 kHz
C.	10 kHz
D.	100 kHz
Answer» B. 3.5 kHz

Discussion

34.	In an RC differentiator, the capacitor.
A.	Charges exponentially at a rate depending on the RC time constant
B.	Charges exponentially at a rate depending on the input voltage
C.	Charges when the input voltage is decreasing
D.	Charges to approximately one time constant
Answer» B. Charges exponentially at a rate depending on the input voltage

Discussion

35.	If the RC time constant of an integrator is increased, as the time constant is increased.
A.	The capacitor charges more during a pulse and discharges less between pulses
B.	The capacitor charges less during a pulse and discharges more between pulses
C.	The capacitor charges more during a pulse and discharges more between pulses
D.	The capacitor charges less during a pulse and discharges less between pulses
Answer» E.

Discussion

36.	If the capacitor in an integrator opens, the output has the same voltage as the input.
A.	True
B.	False
Answer» B. False

Discussion

37.	A dc component is the peak value of a pulse waveform.
A.	True
B.	False
Answer» C.

Discussion

38.	Referring this figure, on the falling edge.
A.	The resistor voltage drops to -5 V and then goes back to zero exponentially
B.	The resistor voltage jumps to -5 V and then goes back to zero exponentially
C.	The capacitor voltage remains constant
D.	The resistor voltage jumps to +5 V and then decreases exponentially to zero
Answer» C. The capacitor voltage remains constant

Discussion

39.	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.	Is less than the applied voltage but greater than zero
D.	Cannot be determined
Answer» C. Is less than the applied voltage but greater than zero

Discussion

40.	A steady-state condition is reached when
A.	The output voltage reaches the average value of the input voltage
B.	The output voltage reaches the input voltage
C.	The output voltage reaches approximately 63% of the input voltage
D.	The output voltage reaches the effective value of the input voltage
Answer» B. The output voltage reaches the input voltage

Discussion

41.	The flat portions of a pulse waveform contain low-frequency components.
A.	True
B.	False
Answer» B. False

Discussion

42.	If the capacitor in an integrator becomes leaky.
A.	The time constant will be effectively reduced
B.	The wave-shape of the output voltage across C is altered
C.	The amplitude of the output is reduced
D.	All of the above
Answer» E.

Discussion

43.	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
Answer» E.

Discussion

44.	In electronic systems, repetitive-pulse waveforms are encountered.
A.	More often than single pulses
B.	Less often than single pulses
C.	About as often as single pulses
D.	Twice as often as single pulses
Answer» B. Less often than single pulses

Discussion

45.	If a repetitive-pulse waveform is applied to an RC integrator, the output waveshape depends on the relationship of the circuit time constant and the duty cycle of the input pulses.
A.	1
B.
Answer» C.

Discussion

46.	The output voltage of a differentiator goes negative on the falling edge of the input pulse.
A.	1
B.
Answer» B.

Discussion

47.	A(n) _____ will decrease the time constant in an RC integrator or differentiator.
A.	open resistor
B.	open capacitor
C.	shorted capacitor
D.	leaky capacitor
Answer» E.

Discussion

48.	The voltage across a capacitor in an RC integrator circuit cannot change exponentially; it can change only instantaneously.
A.	1
B.
Answer» C.

Discussion

49.	A differentiator circuit can be used to convert a pulse input to a nearly constant dc output.
A.	1
B.
Answer» C.

Discussion

50.	If the component positions were switched in the given circuit, the circuit would be an ______.
A.	RL differentiator
B.	RC differentiator
C.	RL integrator
D.	RC integrator
Answer» B. RC differentiator

Discussion

Explore topic-wise MCQs in Electronics.

If the capacitor in an integrator shorts, the output

An integrator and an differentiator can act as what types of filters, respectively?

In a repetitive-pulse integrator circuit, what would the steady-state voltage equal at the end of the fifth pulse? Assume a of 20 V.

If the output of an integrator is zero volts, the capacitor might be open.

The voltage across a capacitor in an integrator circuit cannot change exponentially; it can change only instantaneously.

If a repetitive-pulse waveform is applied to an integrator, the output waveshape depends on the relationship of the circuit time constant and the duty cycle of the input pulses.

A repetitive pulse with a 50% duty cycle is being applied to the input of an integrator. If one time constant is less than one-fifth the pulse width, the capacitor will be able to fully charge and discharge.

A(n) _____ will decrease the time constant in an integrator or differentiator.

For a capacitor to completely charge in an integrator, the pulse width must be _____ 5 time constants.

In an electric circuit, the reaction of a circuit to a given pulse input is known as the pulse response.

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.

Referring this circuit, determine the maximum output voltage when a single pulse is applied as shown. The total resistance is 60 Ω.

The output of an RC integrator is taken across the

Referring to Problem 7, how much will the capacitor charge if the pulse width is increased to 12 ms?

In an RC integrating circuit, the output voltage is taken across the capacitor.

Referring to the bellow figure, determine the voltage level that the output will reach during the pulse.

When a 15 V input pulse with a width equal to two time constants is applied to an RC integrator, the capacitor charges 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

When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to.

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

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

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

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

In an RC differentiator, responding to repetitive pulses, the average value of the output.

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?

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?

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

An RC differentiator acts as a

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

Referring to Problem 5, how long will it take the capacitor to discharge if the internal resistance of the pulse source is 100 Ω?

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

Referring to the give circuit, the output will.

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

In an RC differentiator, the capacitor.

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

If the capacitor in an integrator opens, the output has the same voltage as the input.

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

Referring this figure, on the falling edge.

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

A steady-state condition is reached when

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

If the capacitor in an integrator becomes leaky.

To understand how the output voltage is shaped by a differentiator, you must consider

In electronic systems, repetitive-pulse waveforms are encountered.

If a repetitive-pulse waveform is applied to an RC integrator, the output waveshape depends on the relationship of the circuit time constant and the duty cycle of the input pulses.

The output voltage of a differentiator goes negative on the falling edge of the input pulse.

A(n) _____ will decrease the time constant in an RC integrator or differentiator.

The voltage across a capacitor in an RC integrator circuit cannot change exponentially; it can change only instantaneously.

A differentiator circuit can be used to convert a pulse input to a nearly constant dc output.

If the component positions were switched in the given circuit, the circuit would be an ______.