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.Management Sciences
Category: Passive Filters
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______________?
0
A. 93.8 kHz
B. 93.8 Hz
C. 861 Hz
D. 86.12 kHz
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?
A. 81 µF
B. 161 µF
C. 0.161 µF
D. 220 µF
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____________?
A. 18 V peak-to-peak
B. zero
C. 9 V peak-to-peak
D. 12.74 V peak-to-peak
At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V.the filter’s bandwidth is____________?
A. 530 Hz
B. 106 Hz
C. 11.5 Hz
D. 53 Hz
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___________?
A. 125 Hz
B. 1,250 Hz
C. 564 Hz
D. 5,644 Hz
In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency_____________?
A. is 7 kHz
B. is 10 kHz
C. is 12 kHz
D. cannot be determined
Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is__________?
A. 0 dB
B. 8.30 dB
C. -8.30 dB
D. 0.8 dB
In a certain low-pass filter, fc = 3.5 kHz. Its pass-band is_______________?
A. 0 Hz to 3.5 kHz
B. 0 Hz
C. 3.5 kHz
D. 7 kHz
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?
A. 5.14 MHz
B. 514 kHz
C. 5.03 MHz
D. 503 kHz
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