RLC Circuits and Resonance MCQ

RLC Circuits and Resonance MCQ

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  • 16th Feb, 2023

RLC Circuits and Resonance MCQ Questions

Test your knowledge with RLC Circuits and Resonance MCQ

Practice here the best RLC Circuits and Resonance MCQ Questions that checks your basic knowledge of RLC Circuits and Resonance. This RLC Circuits and Resonance MCQ Test contains 20+ Multiple Choice Questions. Choose the right answers for every questions to check your final preparation for your exams. Apart from this, you can also download here RLC Circuits and Resonance MCQ PDF, completely free.

RLC Circuits and Resonance MCQ Test

1) In a parallel RLC circuit, which value may always be used as a vector reference?

  • A. voltage
  • B.Current
  • C.reactance
  • D.resistance

2) current in a series rlc circuit may always be used as

  • A. An angle
  • B.A reference
  • C.A leading vector
  • D.A lagging vector

3) Series RLC voltage or impedance totals must be calculated by:

  • A. Adding vectors
  • B.Graphing the angles
  • C.Subtracting the values
  • D.Multiplying the values

4) If the bandwidth of a filter increases:

  • A. Q decreases
  • B.the roll-off rate increases
  • C.the center frequency decreases
  • D.the half-power frequency decreases

5) Current in a series RLC circuit may always be used as a ................

  • A. Angle
  • B.Reference
  • C.Leading vector
  • D.Lagging vector

6) Which of the following statement best describes reactance in a series RLC circuit?

  • A. Resistance is always dominant.
  • B.Inductive reactance is always dominant.
  • C.Capacitive reactance is always dominant
  • D.The larger of the two reactances is dominant.

7) Can a parallel tuned circuit be used to couple energy from one circuit to another?

  • A. Yes
  • B.No

8) If the resistance in parallel with a parallel resonant circuit is reduced, the bandwidth

  • A. Increases
  • B.Decreases
  • C.Disappears
  • D.None of the above

9) The current is minimum at resonance in a series RLC circuit?

  • A. True
  • B.False

10) If the value of C in a series RLC circuit is decreased, the resonant frequency

  • A. Increases
  • B.Is not affected
  • C.Decreases
  • D.Is reduced to zero

11) A series resonant circuit is commonly called a tank circuit.

  • A. True
  • B.False

12) What do you mean by RLC circuit?

  • A. an electrical circuit consisting of a resistor (R), an inductor (L), and a capacitor (C), connected in series or in parallel
  • B.Volatage
  • C.Both A and B
  • D.None of the above

13) Electrical resonance occurs in an electric circuit at a particular resonant frequency when the impedances or admittances of circuit elements cancel each other.

  • A. True
  • B.False

14) If the value of C in a series RLC circuit is decreased, the resonant frequency ___.

  • A. Is not affected
  • B.Increases
  • C.Is reduced to zero
  • D.Decreases

15) A certain series resonant circuit has a bandwidth of 2 kHz. If the existing coil is replaced with one having a higher value of Q, the bandwidth will ___.

  • A. increase
  • B.remain the same
  • C.decrease
  • D.be less selective

16) In a series RLC circuit, the larger reactance determines the net reactance of the circuit.

  • A. True
  • B.False

17) A 15 Ω resistor, a 220 µH coil, and a 60 pF capacitor are in series across an ac source. What is the bandwidth of the circuit?

  • A. 138 MHz
  • B.10,866 Hz
  • C.1,907 Hz
  • D.138 kHz

18) As XL = XC in a series resonance circuit, the impedance is __.

  • A. purely capacitive
  • B.purely inductiv
  • C.purely resistive
  • D.capacitive and inductive

19) Is at resonant frequency, the voltage across capacitor is equal to the voltage across inductor?

  • A. Yes
  • B.No

20) To tune a parallel resonant circuit to a higher frequency the capacitance should be:

  • A. Left alone
  • B.Increased
  • C.Decreased
  • D.None of the above

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