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  • Question

  • A PLL can be used as a(n) ___________.


  • Options
  • A. series voltage regulator
  • B. frequency multiplier
  • C. relaxation oscillator
  • D. Schmitt trigger

  • Correct Answer
  • frequency multiplier 

    • Operational Amplifiers problems

    Search Results

    • 1. 

      The feedback resistor has a value of ______ in the given circuit


    • Options
    • A. 2 kΩ
    • B. 10.5 kΩ
    • C. 21 kΩ
    • D. 40 kΩ
      • Discuss
    • 2. A circuit that has an output equal to the algebraic sum of the inputs is called a(n) ______ .

    • Options
    • A. integrator amplifier
    • B. summing amplifier
    • C. differential amplifier
    • D. voltage multiplier
      • Discuss
    • 3. If the input to a comparator is a sine wave, the output is a(n) _________.

    • Options
    • A. ramp voltage
    • B. sine wave
    • C. sawtooth wave
    • D. rectangular wave
      • Discuss
    • 4. A ______ is not a multivibrator.

    • Options
    • A. one-shot
    • B. flip-flop
    • C. VCO
    • D. bistable
      • Discuss
    • 5. An oscillator whose frequency can be controlled by an input "control voltage" is called a(n) ______ .

    • Options
    • A. PLL
    • B. Schmitt trigger
    • C. VCO
    • D. S-R latch
      • Discuss
    • 6. Switching voltage regulators have ______ than linear regulators.

    • Options
    • A. longer life
    • B. simpler circuitry
    • C. greater efficiency
    • D. lower cost
      • Discuss
    • 7. The efficiency rating of a power supply is determined by internal power loss.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. Heat produced by a resistor is generally a desirable effect.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Doubling the voltage across a resistor will cut the current by half.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The current through a resistor can be found by dividing the resistor's voltage by its ohmic value.

    • Options
    • A. True
    • B. False
      • Discuss

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