1 .		The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is [Hint]   0 V   15 V   10.60 V   21.21 V
2 .		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 [Hint]   18 V peak-to-peak   zero   9 V peak-to-peak   12.74 V peak-to-peak
3 .		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 [Hint]   18 V peak-to-peak   zero   9 V peak-to-peak   12.73 V peak-to-peak
4 .		In a series resonant band-pass filter, a lower value of Q results in [Hint]   a higher resonant frequency   a smaller bandwidth   a higher impedance   a larger bandwidth
5 .		In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency is [Hint]   7 kHz   10 kHz   12 kHz   cannot be determined
6 .		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 [Hint]   6.02 dB   -6.02 dB   12.04 dB   -12.04 dB
7 .		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 [Hint]   333 kHz   633 kHz   331 kHz   60 kHz
8 .		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 [Hint]   93.8 kHz   93.8 Hz   861 Hz   86.12 kHz
9 .		Referring to Problem 8, assume the input voltage is 15 V ac. What is the output voltage at the critical frequency,fc? [Hint]   0 V   7.07 V   15 V   10.6 V
10 .		Referring to Problem 8, assume the input voltage is 15 V dc. What is the output voltage? [Hint]   0 V   15 V   7.07 V   10.6 V
11 .		In a certain low-pass filter, fc = 3.5 kHz. Its passband is [Hint]   0 Hz to 3.5 kHz   0 Hz   3.5 kHz   7 kHz
12 .		Vout = 500 mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB, is [Hint]   0 dB   8.30 dB   -8.30 dB   0.8 dB
13 .		An RC high-pass filter consists of a 0.2 F capacitor and a 220 resistor. The output is taken across the resistor. The circuit's critical frequency is [Hint]   723 Hz   7,234 Hz   362 Hz   3,617 Hz
14 .		An RL high-pass filter consists of a 470 resistor and a 600 mH coil. The output is taken across the coil. The circuit's critical frequency is [Hint]   125 Hz   1,250 Hz   564 Hz   5,644 Hz
15 .		An RC high-pass filter consists of a 820 resistor. What is the value of C so that Xc is ten times less than R at an input frequency of 12 kHz? [Hint]   81 F   161 F   0.161 F   220 F
16 .		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? [Hint]   6 V   597 mV   5.97 V   0 V
17 .		Referring to Problem 15, what is the circuit's phase shift? [Hint]   99°   17°   57°   5.71°
18 .		A series resonant band-pass filter consists of a 2 mH coil, a 0.005 F capacitor, and a 120 resistor. The winding resistance of the coil is 12 . The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (fo)? [Hint]   10.9 V   1.09 V   1.1 V   12 V
19 .		Referring to Problem 18, what is the bandwidth of the filter? [Hint]   1 kHz   632 kHz   50.3 kHz   10.5 kHz
20 .		A parallel resonant band-pass filter consists of a 6.8 resistor in series with a parallel network made up of an 8 H coil and a 120 pF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 . What is the center frequency of the filter? [Hint]   5.14 MHz   514 kHz   5.03 MHz   503 kHz
21 .		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? [Hint]   459 Hz   4,591 Hz   999 Hz   2,176 Hz
22 .		Referring to Problem 21, the filter's bandwidth is [Hint]   11.5 Hz   530 Hz   53 Hz   106 Hz
23 .		A series resonant band-stop filter consists of a 68 resistor, a 110 mH coil, and a 0.02 F capacitor. The internal resistance, RW, of the coil is 4 . Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at fo? [Hint]   1.1 mV   11.1 mV   111 mV   200 mV
24 .		Referring to Problem 23, the circuit's bandwidth is [Hint]   9.8 Hz   98.4 Hz   10.4 Hz   104.2 Hz
25 .		Referring to Problem 23, what will the output voltage be if the coil's internal resistance is neglected? [Hint]   0 V   200 mV   11.1 mV   111 mV