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Home ‣ Electrical Engineering ‣ RL Circuits See What Others Are Saying!
  • Question

  • When the frequency of the voltage applied to a series RL circuit is increased, the phase angle


  • Options
  • A. decreases
  • B. increases
  • C. does not change
  • D. cannot be determined without values

  • Correct Answer
  • increases 

    • More questions

    • 1. A positive angle of 30° is equivalent to a negative angle of

    • Options
    • A. ?30°
    • B. ?330°
    • C. ?60°
    • D. ?180°
      • Discuss
    • 2. A 330 pF capacitor and a 220 pF capacitor are each connected across a 6 V dc source. The voltage across the 330 pF capacitor is

    • Options
    • A. 3 V
    • B. 6 V
    • C. 4 V
    • D. 0 V
      • Discuss
    • 3. If 25 W of power are applied to the primary of an ideal transformer with a turns ratio of 10, the power delivered to the secondary load is

    • Options
    • A. 25 W
    • B. 0 W
    • C. 250 W
    • D. 2.5 W
      • Discuss
    • 4. In order to get maximum power transfer from a capacitive source, the load must

    • Options
    • A. have a capacitive reactance equal to circuit resistance
    • B. have an impedance that is the complex conjugate of the source impedance
    • C. be as capacitive as it is inductive
    • D. none of the above
      • Discuss
    • 5. Positive numbers can be represented by points to the right of the origin on the horizontal axis of a graph.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. A series circuit consists of three resistors with values of 120 Ω, 270 Ω, and 330 Ω. The total resistance is

    • Options
    • A. less than 120 Ω
    • B. the average of the values
    • C. 720 Ω
    • D. 120 Ω
      • Discuss
    • 7. The dielectric constant is the ability of a material to establish an electric field.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is

    • Options
    • A. 138 Ω
    • B. 1,389 Ω
    • C. 5,700 Ω
    • D. 880 Ω
      • Discuss
    • 9. A series resonant circuit is commonly called a tank circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A 47 Ω resistor is in series with an inductive reactance of 120 Ω across an ac source. The impedance, expressed in polar form, is

    • Options
    • A. 47∠68.6° Ω
    • B. 120∠68.6° Ω
    • C. 129∠31.4° Ω
    • D. 129∠68.6° Ω
      • Discuss

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