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- Question
A sinusoidal voltage with a peak-to-peak value of 18 V is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is
Options- A. 18 V peak-to-peak
- B. zero
- C. 9 V peak-to-peak
- D. 12.74 V peak-to-peak
- Correct Answer
- zero
- 1. An RC high-pass filter consists of an 820 Ω resistor. What is the value of C so that Xc is ten times less than R at an input frequency of 12 kHz?
Options- A. 81 µF
- B. 161 µF
- C. 0.161 µF
- D. 220 µF Discuss
- 2. At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is
Options- A. 6.02 dB
- B. ?6.02 dB
- C. 12.04 dB
- D. ?12.04 dB Discuss
- 3. Referring to Problem 8, assume the input voltage is 15 V dc. What is the output voltage?
Options- A. 0 V
- B. 15 V
- C. 7.07 V
- D. 10.6 V Discuss
- 4. An RL high-pass filter consists of a 470 Ω resistor and a 600 mH coil. The output is taken across the coil. The circuit's critical frequency is
Options- A. 125 Hz
- B. 1,250 Hz
- C. 564 Hz
- D. 5,644 Hz Discuss
- 5. An RL low-pass filter consists of a 5.6 mH coil and a 3.3 kΩ resistor. The output voltage is taken across the resistor. The circuit's critical frequency is
Options- A. 93.8 kHz
- B. 93.8 Hz
- C. 861 Hz
- D. 86.12 kHz Discuss
- 6. In an RC differentiator, responding to repetitive pulses, the average value of the output
Options- A. is zero
- B. is equal to the input voltage
- C. is 63 percent of the input voltage
- D. cannot be determined Discuss
- 7. 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
Options- 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 Discuss
- 8. What is the highest frequency contained in a pulse that has a rise and fall time equal to 10 microseconds (10 µs)?
Options- A. 35 kHz
- B. 3.5 kHz
- C. 10 kHz
- D. 100 kHz Discuss
- 9. Referring to Problem 7, how much will the capacitor charge if the pulse width is increased to 12 ms?
Options- A. 2.51 V
- B. 25.14 V
- C. 4.86 V
- D. 12.76 V Discuss
- 10. With an RL integrator, at the instant of the rising pulse edge,
Options- 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 Discuss
Passive Filters problems
Search Results
Correct Answer: 0.161 µF
Correct Answer: ?6.02 dB
Correct Answer: 15 V
Correct Answer: 125 Hz
Correct Answer: 93.8 kHz
Correct Answer: is zero
Correct Answer: fully charge and fully discharge during each period of the input waveform
Correct Answer: 35 kHz
Correct Answer: 25.14 V
Correct Answer: all the input voltage is across the inductor
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