Q.1

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.2

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.3

When aV 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.4

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.5
A dc component is the peak value of a pulse waveform.
  • True
  • False
Q.6
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.7
The output of an RC integrator is taken across the
  • Diode
  • Capacitor
  • Resistor
  • Source
Q.8
If the capacitor in an RC integrator shorts, the output
  • is at ground
  • would measure the same as the input
  • would measure zero volts
  • None of the above
Q.9
Which of the following is true for a capacitor?
  • A capacitor acts like a short to instantaneous changes in current.
  • A capacitor's voltage cannot change instantaneously.
  • A capacitor acts like an open to dc.
  • All of the above
Q.10
What is a circuit that produces short-duration spikes?
  • A trigger pulse generator
  • An RL integrator
  • A timing circuit
  • A pulse waveform-to-dc converter
Q.11
In a repetitive-pulse RC integrator circuit, what would the steady-state voltage equal at the end of the fifth pulse? Assume a Vin ofV.
  • 1.46 V
  • 14.62 V
  • 20 V
  • 0 V
Q.12
An RL integrator and an RC differentiator can act as what types of filters, respectively?
  • low-pass, low-pass
  • low-pass, high-pass
  • high-pass, high-pass
  • high-pass, low-pass
Q.13
If a periodic pulse waveform is applied to an RC differentiating circuit, which two conditions are possible?
  • tw 5 or tw > 5
  • tw = 5 or tw > 5
  • tw 5 or tw
  • tw 5 or tw
Q.14
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.15
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.16
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.17
The flat portions of a pulse waveform contain low-frequency components.
  • True
  • False
Q.18
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.19
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.20
If the capacitor in an integrator opens, the output has the same voltage as the input.
  • True
  • False
Q.21
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.22
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.23
Referring to Problemhow long will it take the capacitor to discharge if the internal resistance of the pulse source isΩ?
  • 300 μs
  • 600 μs
  • 900 μs
  • 1.5 ms
Q.24
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.25
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.26
What is the highest frequency contained in a pulse that has a rise and fall time equal tomicroseconds (μs)?
  • 35 kHz
  • 3.5 kHz
  • 10 kHz
  • 100 kHz
Q.27
An integrator consists of a 3.3 kΩ resistor and a 2 μF capacitor. A singleV, 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
A single 6 V pulse with a width ofμs is applied to an integrator consisting of akΩ resistor and a 0.μF capacitor. To what voltage will the capacitor charge?
  • 0 V
  • 3.78 V
  • 5.16 V
  • 6 V
Q.29
The rising and falling edges of a pulse waveform contain the higher frequency component.
  • True
  • False
Q.30
An RC differentiator acts as a
  • Low-pass filter
  • High-pass filter
  • Band-pass filter
  • Band-stop filter
0 h : 0 m : 1 s