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

  • The polar form of a complex number consists of a real part and a j part.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • More questions

    • 1. In a five-branch parallel circuit, there are 12 mA of current in each branch. If one of the branches opens, the current in each of the other four branches is

    • Options
    • A. 48 mA
    • B. 12 mA
    • C. 0 A
    • D. 3 mA
      • Discuss
    • 2. The parallel combination of a 470 Ω resistor and a 1.5 kΩ resistor is in series with the parallel combination of five 1 kΩ resistors. The source voltage is 50 V. The percentage of the load current through any single 1 kΩ resistor is

    • Options
    • A. 25%
    • B. 20%
    • C. 100%
    • D. 50%
      • Discuss
    • 3. Two series capacitors (one 2 µF, the other of unknown value) are charged from a 24 V source. The 2 µF capacitor is charged to 16 V and the other to 8 V. The value of the unknown capacitor is

    • Options
    • A. 1 µF
    • B. 2 µF
    • C. 4 µF
    • D. 8 µF
      • Discuss
    • 4. A material that does not allow current under normal conditions is a(n)

    • Options
    • A. insulator
    • B. conductor
    • C. semiconductor
    • D. valence
      • Discuss
    • 5. A power factor of 1 indicates a purely reactive circuit, and a power factor of 0 indicates a purely resistive circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. A 4.7 MΩ resistor is in series with a 0.015 µF capacitor. The combination is across a 12 V source. How long does it take the capacitor to fully charge?

    • Options
    • A. 35 ms
    • B. 352 ms
    • C. 3.5 s
    • D. 70.5 ms
      • Discuss
    • 7. A waveform has a baseline of 3 V, a duty cycle of 20%, and an amplitude of 8 V. The average voltage value is

    • Options
    • A. 4 V
    • B. 4.6 V
    • C. 1.6 V
    • D. 11 V
      • Discuss
    • 8. The parallel combination of a 470 Ω resistor and a 680 Ω resistor is in series with the parallel combination of four 2 kΩ resistors. The total resistance is

    • Options
    • A. 1,650 Ω
    • B. 1,078 Ω
    • C. 77.8 Ω
    • D. 778 Ω
      • Discuss
    • 9. Sine wave A has a positive-going zero crossing at 45°. Sine wave B has a positive-going zero crossing at 60°. Which of the following statements is true?

    • Options
    • A. Wave A leads wave B by 15°.
    • B. Wave A lags wave B by 15°.
    • C. Wave A leads wave B by 105°.
    • D. Wave A lags wave B by 105°.
      • Discuss
    • 10. A 15 Ω resistor, an inductor with 8 Ω inductive reactance, and a capacitor with 12 Ω capacitive reactance are in parallel across an ac voltage source. The circuit impedance is

    • Options
    • A. 12.7 Ω
    • B. 127 Ω
    • C. 4,436 Ω
    • D. 6,174 Ω
      • Discuss

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