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Home ‣ Electrical Engineering ‣ Series-Parallel Circuits See What Others Are Saying!
  • Question

  • The output of a certain voltage divider is 12 V with no load. When a load is connected, the output voltage


  • Options
  • A. decreases
  • B. increases
  • C. remains the same
  • D. becomes zero

  • Correct Answer
  • decreases 

    • More questions

    • 1. Voltage is measured in

    • Options
    • A. volts
    • B. farads
    • C. watts
    • D. ohms
      • Discuss
    • 2. A 0.01 µF capacitor equals how many picofarads?

    • Options
    • A. 100 pF
    • B. 1,000 pF
    • C. 10,000 pF
    • D. 100,000 pF
      • Discuss
    • 3. When the frequency of the voltage applied to a series RC circuit is increased, the phase angle

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. becomes erratic
      • Discuss
    • 4. There is a total of 800 mA of current into four parallel resistors. The currents through three of the resistors are 40 mA, 70 mA, and 200 mA. The current through the fourth resistor is

    • Options
    • A. 490 mA
    • B. 800 mA
    • C. 310 mA
    • D. 0 A
      • Discuss
    • 5. A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is

    • Options
    • A. 25%
    • B. 50%
    • C. 1%
    • D. 100%
      • Discuss
    • 6. You are measuring the current in a circuit that is operated on an 18 V battery. The ammeter reads 40 mA. Later you notice the current has dropped to 20 mA. How much has the voltage changed?

    • Options
    • A. 9 V
    • B. 900 mV
    • C. 0 V
    • D. 18 V
      • Discuss
    • 7. A certain amplifier has 600 Ω internal resistance looking from its output. In order to provide maximum power to a 4 Ω speaker, what turns ratio must be used in the coupling transformer?

    • Options
    • A. 8
    • B. 0.8
    • C. 0.08
    • D. 80
      • Discuss
    • 8. In a Y-connected generator, there is a 120° difference between each line voltage and the nearest phase voltage.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. When the frequency of the voltage applied to a series RC circuit is decreased, the impedance

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. doubles
      • Discuss
    • 10. The maximum output voltage of a certain low-pass filter is 15 V. The output voltage at the critical frequency is

    • Options
    • A. 0 V
    • B. 15 V
    • C. 10.60 V
    • D. 21.21 V
      • Discuss

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