Passive Filters Electrical MCQ Quiz - Set 02 - ObjectiveBooks

# Practice Test: Question Set - 02

1. The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is
(A) 0 V
(B) 15 V
(C) 10.60 V
(D) 21.21 V

2. . In an RL high-pass filter, the output is taken across the inductor and the output leads the input.
(A) True
(B) False

3. 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

4. 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

5. The output voltage is 63.3% of its maximum at the critical frequencies.
(A) True
(B) False

6. . 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

7. 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
(A) 6.02 dB
(B) -6.02 dB
(C) 12.04 dB
(D) -12.04 dB

8. Critical frequencies are also called -3 dB frequencies.
(A) True
(B) False

9. In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.
(A) True
(B) False

10. 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

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