logo

CuriousTab

CuriousTab

Discussion

Home ‣ Electrical Engineering ‣ Circuit Theorems in AC Analysis See What Others Are Saying!
  • Question

  • Referring to the given circuit, what is ZTH if R1 is changed to 220 Ω?

    Referring to the given circuit, what is ZTH if R1 is changed to 220 ?? 225?12.1° ? 225?77.9° ? 46?77


  • Options
  • A. 225∠12.1° Ω
  • B. 225∠77.9° Ω
  • C. 46∠77.9° Ω
  • D. 46∠12.1° Ω

  • Correct Answer
  • 46∠77.9° Ω 

    • More questions

    • 1. 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
    • 2. 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
    • 3. The dielectric constant is the ability of a material to establish an electric field.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. 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
    • 5. A series resonant circuit is commonly called a tank circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. 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
    • 7. When a 12 V input pulse with a width equal to one time constant is applied to an RC integrator, the capacitor charges to

    • Options
    • A. 0 V
    • B. 12 V
    • C. 6.3 V
    • D. 7.56 V
      • Discuss
    • 8. An integrator consists of a 3.3 kΩ resistor and a 2 µF capacitor. A single 30 V, 6 ms pulse is applied to the input. How much will the capacitor charge?

    • Options
    • A. 10.3 V
    • B. 30 V
    • C. 12.09 V
    • D. 17.91 V
      • Discuss
    • 9. Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is

    • Options
    • A. 24 V
    • B. 12 V
    • C. 0 V
    • D. 6 V
      • Discuss
    • 10. An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then

    • Options
    • A. VR ? VL
    • B. VL < VR
    • C. VL = VR
    • D. VL > VR
      • Discuss

    Comments

    There are no comments.
Enter a new Comment




Aptitude

Engineering

Programming

Reasoning

Links

Copyright ©CuriousTab. All rights reserved.