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