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?
A. 0 V
B. 5.97 V
C. 6 V
D. 597 mV
Month: December 2018
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?
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?
A. 459 Hz
B. 4,591 Hz
C. 999 Hz
D. 2,176 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___________?
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
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___________?
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___________?
A. 333 kHz
B. 633 kHz
C. 331 kHz
D. 60 kHz
In a certain low-pass filter, fc = 3.5 kHz. Its pass-band is_______________?
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
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?
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
In a series resonant band-pass filter, a lower value of Q results in______________?
In a series resonant band-pass filter, a lower value of Q results in______________?
A. a higher impedance
B. a smaller bandwidth
C. a higher resonant frequency
D. a larger bandwidth
The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is_____________?
The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is_____________?
A. 10.60 V
B. 0 V
C. 21.21 V
D. 15 V
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____________?
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____________?
A. 12.73 V peak-to-peak
B. 18 V peak-to-peak
C. 9 V peak-to-peak
D. zero
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 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