Practice Time Response Of Reactive Circuits Multiple Choice Questions Quiz-1 - MCQGeeks.com

Q.1

In electronic systems, repetitive-pulse waveforms are encountered.

More often than single pulses
Less often than single pulses
About as often as single pulses
Twice as often as single pulses

Q.2

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

The response to the rising pulse edge
The response between the rising and falling edges
The response to the falling pulse edge
All of the above

Q.3

If the capacitor in an integrator becomes leaky.

The time constant will be effectively reduced
The wave-shape of the output voltage across C is altered
The amplitude of the output is reduced
All of the above

Q.4

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

True
False

Q.5

In an RC differentiator, the capacitor.

Charges exponentially at a rate depending on the RC time constant
Charges exponentially at a rate depending on the input voltage
Charges when the input voltage is decreasing
Charges to approximately one time constant

Q.6

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

35 kHz
3.5 kHz
10 kHz
100 kHz

Q.7

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

Is zero
Is equal to the input voltage
Is 63 percent of the input voltage
Cannot be determined

Q.8

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

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

Q.9

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

Must be zero
Must be equal to the applied voltage
Is less than the applied voltage but greater than zero
Cannot be determined

Q.10

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

All the input voltage is across the resistor
All the input voltage is across the inductor
63 percent of the input voltage is across the resistor
63 percent of the input voltage is across the inductor

Q.11

An RC differentiator acts as a

Low-pass filter
High-pass filter
Band-pass filter
Band-stop filter

Q.12

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

0 V
12 V
6.3 V
7.56 V

Q.13

When a 24 V input pulse with a width equal to five time constants is applied to an RC integrator, the capacitor charges to

24 V
15.12 V
20.64 V
12 V

Q.14

A steady-state condition is reached when

The output voltage reaches the average value of the input voltage
The output voltage reaches the input voltage
The output voltage reaches approximately 63% of the input voltage
The output voltage reaches the effective value of the input voltage

Q.15

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

The inductor prevents a sudden change in voltage
The inductor prevents a sudden change in current
Voltage across the inductor instantly reaches 63% of input voltage
Voltage across the inductor is zero

Q.16

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

True
False

Q.17

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

True
False

Q.18

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

True
False

Q.19

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

True
False

Q.20

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

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

Q.21

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

True
False

Q.22

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?

0 V
3.78 V
5.16 V
6 V

Q.23

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

15 V
12.9 V
8.6 V
19.45 V

Q.24

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

True
False

Q.25

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

300 μs
600 μs
900 μs
1.5 ms

Q.26

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

True
False

Q.27

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?

10.3 V
30 V
12.09 V
17.91 V

Q.28

Referring this figure, on the falling edge.

The resistor voltage drops to -5 V and then goes back to zero exponentially
The resistor voltage jumps to -5 V and then goes back to zero exponentially
The capacitor voltage remains constant
The resistor voltage jumps to +5 V and then decreases exponentially to zero

Q.29

Referring to the give circuit, the output will.

Decay to zero at the end of the pulse
Reach 6 V at the end of the pulse
Reach 3.78 V at the end of the pulse
Reach 5.16 V at the end of the pulse

Q.30

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

0 V
15 V
6.3 V
9.45 V

0 h : 0 m : 1 s