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  • Question

  • Switching voltage regulators have ______ than linear regulators.


  • Options
  • A. longer life
  • B. simpler circuitry
  • C. greater efficiency
  • D. lower cost

  • Correct Answer
  • greater efficiency 

    • Operational Amplifiers problems

    Search Results

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

    • Options
    • A. series voltage regulator
    • B. frequency multiplier
    • C. relaxation oscillator
    • D. Schmitt trigger
      • Discuss
    • 2. 

      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
    • 3. 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
    • 4. 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
    • 5. A ______ is not a multivibrator.

    • Options
    • A. one-shot
    • B. flip-flop
    • C. VCO
    • D. bistable
      • Discuss
    • 6. The efficiency rating of a power supply is determined by internal power loss.

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

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

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. 

      If the current in the given circuit is increased to 24 mA, the source voltage must have tripled.


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

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