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Electrical Engineering - Passive Filters

@ : Home > Electrical Engineering > Passive Filters > General Questions

Exercise

"Everyone is wise until he speaks."
- (Proverb)
1. 

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

2. 

An RL low-pass filter consists of a 5.6 mH coil and a 3.3 k resistor. The output voltage is taken across the resistor. The circuit's critical frequency is

A. 93.8 kHz
B. 93.8 Hz
C. 861 Hz
D. 86.12 kHz

3. 

In a series resonant band-pass filter, a lower value of Q results in

A. a higher resonant frequency
B. a smaller bandwidth
C. a higher impedance
D. a larger bandwidth

4. 

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

5. 

A parallel resonant band-pass filter consists of a 90 resistor in series with a parallel network made up of a 60 mH coil and a 0.02 F capacitor. The output is taken across the capacitor/coil. The coil winding has a resistance of 20 . What is the center frequency of the filter?

A. 459 Hz
B. 4,591 Hz
C. 999 Hz
D. 2,176 Hz




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