Passive Filters Mcqs
This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “ Passive Filters ”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Passive Filters comprehensively.
2. 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?
459 Hz
4,591 Hz
999 Hz
2,176 Hz
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
3. 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___________?
125 Hz
1,250 Hz
564 Hz
5,644 Hz
4. An RC low-pass filter consists of a 120 Ω resistor and a 0.002 µF capacitor. The output is taken across the capacitor. The circuit’s critical frequency is___________?
333 kHz
633 kHz
331 kHz
60 kHz
5. In a certain low-pass filter, fc = 3.5 kHz. Its pass-band is_______________?
0 Hz to 3.5 kHz
0 Hz
3.5 kHz
7 kHz
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
6. 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 Rat an input frequency of 12 kHz?
81 µF
161 µF
0.161 µF
220 µF
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
7. In a series resonant band-pass filter, a lower value of Q results in______________?
A higher impedance
A smaller bandwidth
A higher resonant frequency
A larger bandwidth
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
8. The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is_____________?
10.60 V
0 V
21.21 V
15 V
9. The same signal in Problem 2 is applied to an RC high-pass filter. If the reactance is zero at the input frequency, the output voltage is____________?
12.73 V peak-to-peak
18 V peak-to-peak
9 V peak-to-peak
Zero
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
10. 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____________?
18 V peak-to-peak
Zero
9 V peak-to-peak
12.74 V peak-to-peak
11. Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is__________?
0 dB
8.30 dB
-8.30 dB
0.8 dB
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
12. 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?
5.14 MHz
514 kHz
5.03 MHz
503 kHz
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
13. In a certain low-pass filter, fc = 3.5 kHz. If the input voltage is a 6 V sine wave with a dc level of 10 V, what is the output voltage magnitude?
0 V
5.97 V
6 V
597 mV
14. 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______________?
93.8 kHz
93.8 Hz
861 Hz
86.12 kHz
Answer & Solution
No Solution for this Answer..! Report or Discus this Question
15. An RC high-pass filter consists of a 0.2 µF capacitor and a 220 Ω resistor. The output is taken across the resistor. The circuit’s critical frequency is_____________?
723 Hz
7,234 Hz
362 Hz
3,617 Hz
Answer & Solution
No Solution for this Answer..! Report or Discus this Question