Summative Exam 3 Practice Test
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Questions and Answers

What is the cutoff frequency of the circuit in the given figure?

  • 0 Hz
  • 21 Hz
  • 60 Hz
  • 365 Hz (correct)
  • What is the resistance of the resistor in a circuit if the admittance is given as (0.040 + 𝑗0.025)𝑆?

  • 9 ohms
  • 25 ohms
  • 12.5 ohms
  • 18 ohms (correct)
  • What is the phasor voltage V_AB (in volts) in the AC network shown in the figure?

  • 0
  • 17∠30° (correct)
  • 5∠30°
  • 12.5∠30°
  • What is the approximate total reactance when a voltage with a frequency of 7 kHz is applied across the circuit terminals with two 10 H inductors in parallel and a third 10 H inductor in series?

    <p>660 kΩ</p> Signup and view all the answers

    Calculate the bandwidth of a filter constructed from a coil having 100 mH inductance and 30 ohms series resistance in parallel with a 0.8 uF capacitor.

    <p>47.75 Hz</p> Signup and view all the answers

    What will be the wavelength of the signal emitted by a GaAs diode?

    <p>869 nm</p> Signup and view all the answers

    What is the reverse saturation current at 40°C for the same bias in a silicon (PN) junction with a reverse saturation current of 10 pico Ampere at 20°C?

    <p>30 pA</p> Signup and view all the answers

    In a series RLC circuit with a resonance frequency of 1 kHz and a quality factor Q = 100, if each of R, L, and C is doubled from its original value, what is the new Q of the circuit?

    <p>200</p> Signup and view all the answers

    What is the voltage available from the diode voltage doubler if the secondary voltage of the transformer connected to its input is 120 V (rms)?

    <p>240 V</p> Signup and view all the answers

    In the circuit shown in the figure, A1, A2, and A3 are ideal ammeters. If A1 reads 5 A and A2 reads 12 A, what should A3 read?

    <p>13 A</p> Signup and view all the answers

    Determine the total current in the circuit shown in the figure.

    <p>6.67 A</p> Signup and view all the answers

    In the given circuit, what does IT equal to?

    <p>1.5 A</p> Signup and view all the answers

    Which of the following does not result from adding an acceptor impurity?

    <p>The substance has an electron surplus.</p> Signup and view all the answers

    What is the type of filter shown in the figure?

    <p>Low pass filter</p> Signup and view all the answers

    What is the peak factor of a sine waveform?

    <p>1.414</p> Signup and view all the answers

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