Q.1
In a certain parallel resonant band-pass filter, the resonant frequency is 14 kHz. If the bandwidth is 4 kHz, the lower frequency is
Q.2
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?
Q.3
A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?
Q.4
In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.
Q.5

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

  • 0 Hz to 3.5 kHz
  • 0 Hz
  • 3.5 kHz
  • 7 kHz
Q.6

At a certain frequency, the output voltage of a filter is 6 V and the input isV. The voltage ratio in decibels is

  • 6.02 dB
  • –6.02 dB
  • 12.04 dB
  • –12.04 dB
Q.7

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 apF capacitor. The output is taken across the capacitor/coil. Assume RW = 0 . What is the center frequency of the filter?

  • 5.14 MHz
  • 514 kHz
  • 5.03 MHz
  • 503 kHz
Q.8

A series resonant band-pass filter consists of a 2 mH coil, a 0.F capacitor, and a resistor. The winding resistance of the coil is. The output voltage is taken off the resistor. Input voltage isVrms. What is the output voltage magnitude at the center frequency (f0)?

  • 10.9 V
  • 1.09 V
  • 1.1 V
  • 12 V
Q.9

A series resonant band-stop filter consists of a resistor, amH coil, and a 0.F capacitor. The internal resistance, RW, of the coil is 4 . Input voltage ismV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?

  • 1.1 mV
  • 11.1 mV
  • 111 mV
  • 200 mV
Q.10

An RC high-pass filter consists of a 0.2 F capacitor and a resistor. The output is taken across the resistor. The circuit's critical frequency is

  • 723 Hz
  • 7,234 Hz
  • 362 Hz
  • 3,617 Hz
Q.11

A sinusoidal voltage with a peak-to-peak value ofV is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is

  • 18 V peak-to-peak
  • zero
  • 9 V peak-to-peak
  • 12.74 V peak-to-peak
Q.12

An RC low-pass filter consists of a resistor and a 0.F capacitor. The output is taken across the capacitor. The circuit's critical frequency is

  • 633 kHz
  • 333 kHz
  • 331 kHz
  • 60 kHz
Q.13

A sinusoidal voltage with a peak-to-peak value ofV is applied to an RC low-pass filter. If the reactance at the input frequency is zero, the output voltage is

  • 18 V peak-to-peak
  • zero
  • 9 V peak-to-peak
  • 12.74 V peak-to-peak
Q.14

Referring to Problemif the input voltage is a 6 V sine wave with a dc level ofV, what is the output voltage magnitude?

  • 6 V
  • 597 mV
  • 5.97 V
  • 0 V
Q.15

Vout =mV, and Vin = 1.3 V. The ratio Vout/ Vin expressed in dB is

  • 0 dB
  • 8.30 dB
  • –8.30 dB
  • 0.8 dB
Q.16

Referring to Problemif the input voltage is a 6 V sine wave with a dc level ofV, what is the output voltage magnitude?

  • 6 V
  • 597 mV
  • 5.97 V
  • 0 V
Q.17

In a certain parallel resonant band-pass filter, the resonant frequency iskHz. If the bandwidth is 4 kHz, the lower frequency

  • is 7 kHz
  • is 10 kHz
  • is 12 kHz
  • cannot be determined
Q.18

In an RC low-pass filter, the output voltage is taken across the resistor and the output lags the input voltage.

  • True
  • False
Q.19

The roll-off rate of a basic RC or RL filter isdB per decade.

  • True
  • False
Q.20

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

  • a higher resonant frequency
  • a smaller bandwidth
  • a higher impedance
  • a larger bandwidth
0 h : 0 m : 1 s