Electrical Engineering - Passive Filters

Exercise :: Passive Filters - General Questions

11. 

An RC low-pass filter consists of a 120 resistor and a 0.002 F 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

Answer: Option B

Explanation:

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12. 

Referring to Problem 8, assume the input voltage is 15 V ac. What is the output voltage at the critical frequency,fc?

A. 0 V
B. 7.07 V
C. 15 V
D. 10.6 V

Answer: Option D

Explanation:

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13. 

Referring to Problem 21, the filter's bandwidth is

A. 11.5 Hz
B. 530 Hz
C. 53 Hz
D. 106 Hz

Answer: Option C

Explanation:

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14. 

Referring to Problem 15, if the input voltage is a 6 V sine wave with a dc level of 10 V, what is the output voltage magnitude?

A. 6 V
B. 597 mV
C. 5.97 V
D. 0 V

Answer: Option C

Explanation:

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15. 

In a certain low-pass filter, fc = 3.5 kHz. Its passband is

A. 0 Hz to 3.5 kHz
B. 0 Hz
C. 3.5 kHz
D. 7 kHz

Answer: Option A

Explanation:

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