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- Question
A parallel resonant band-pass filter consists of a 90 Ω resistor in series with a parallel network made up of a 60 mH coil and a 0.02 µF capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 Ω. What is the center frequency of the filter?
Options- A. 459 Hz
- B. 4,591 Hz
- C. 999 Hz
- D. 2,176 Hz
- Correct Answer
- 4,591 Hz
- 1. Referring to Problem 21, the filter's bandwidth is
Options- A. 11.5 Hz
- B. 530 Hz
- C. 53 Hz
- D. 106 Hz Discuss
- 2. Referring to Problem 8, assume the input voltage is 15 V ac. What is the output voltage at the critical frequency,fc?
Options- A. 0 V
- B. 7.07 V
- C. 15 V
- D. 10.6 V Discuss
- 3. A parallel resonant band-pass filter consists of a 6.8 Ω resistor in series with a parallel network made up of an 8 µH coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 Ω. What is the center frequency of the filter?
Options- A. 5.14 MHz
- B. 514 kHz
- C. 5.03 MHz
- D. 503 kHz Discuss
- 4. In a certain low-pass filter, fc = 3.5 kHz. Its passband is
Options- A. 0 Hz to 3.5 kHz
- B. 0 Hz
- C. 3.5 kHz
- D. 7 kHz Discuss
- 5. A series resonant band-stop filter consists of a 68 Ω resistor, a 110 mH coil, and a 0.02 µF capacitor. The internal resistance, RW, of the coil is 4 Ω. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?
Options- A. 1.1 mV
- B. 11.1 mV
- C. 111 mV
- D. 200 mV Discuss
- 6. 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
- 7. 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
- 8. 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
- 9. 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
- 10. 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
Passive Filters problems
Search Results
Correct Answer: 53 Hz
Correct Answer: 10.6 V
Correct Answer: 5.14 MHz
Correct Answer: 0 Hz to 3.5 kHz
Correct Answer: 11.1 mV
Correct Answer: 93.8 kHz
Correct Answer: 125 Hz
Correct Answer: 15 V
Correct Answer: ?6.02 dB
Correct Answer: 0.161 µF
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