Question: A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?

• 1. 12 V
• 2. 24 V
• 3. 0 V
• 4. 6 V

Question: 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?

• 1. 0 V
• 2. 5.97 V
• 3. 6 V
• 4. 597 mV

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 cente

• 1. 459 Hz
• 2. 4,591 Hz
• 3. 999 Hz
• 4. 2,176 Hz

Question: 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___________?

• 1. 125 Hz
• 2. 1,250 Hz
• 3. 564 Hz
• 4. 5,644 Hz

Question: 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___________?

• 1. 333 kHz
• 2. 633 kHz
• 3. 331 kHz
• 4. 60 kHz

Question: In a certain low-pass filter, fc = 3.5 kHz. Its pass-band is_______________?

• 1. 0 Hz to 3.5 kHz
• 2. 0 Hz
• 3. 3.5 kHz
• 4. 7 kHz

Question: 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?

• 1. 81 µF
• 2. 161 µF
• 3. 0.161 µF
• 4. 220 µF

Question: In a series resonant band-pass filter, a lower value of Q results in______________?

• 1. a higher impedance
• 2. a smaller bandwidth
• 3. a higher resonant frequency
• 4. a larger bandwidth

Question: The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is_____________?

• 1. 10.60 V
• 2. 0 V
• 3. 21.21 V
• 4. 15 V

Question: 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____________?

• 1. 12.73 V peak-to-peak
• 2. 18 V peak-to-peak
• 3. 9 V peak-to-peak
• 4. zero