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Home Electronics Inductors See What Others Are Saying!
  • Question
  • Inductance is proportional to the cross-sectional area of a coil.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 


  • More questions

    • 1. A(n) ________ amplifier is used if the application requires a high sensitivity to low-level signals and protection from high-voltage associated circuits.

    • Options
    • A. basic instrumentation
    • B. operational transconductance
    • C. log/antilog amplifier
    • D. isolation
    • Discuss
    • 2. Integrated-injection logic offers high component density and is easier to fabricate than TTL.

    • Options
    • A. True
    • B. False
    • Discuss
    • 3. One oscilloscope selector knob that allows the major and minor divisions of the graticule to be used to determine a signal amplitude value is called the:

    • Options
    • A. time/cm control
    • B. position control
    • C. intensity control
    • D. volts/cm control
    • Discuss
    • 4. What is the name of a device used to directly measure the frequency of a periodic wave?

    • Options
    • A. oscilloscope
    • B. frequency meter or counter
    • C. audio frequency generator
    • D. radio frequency generator
    • Discuss
    • 5. When matching polarity connections have been made and the potential difference (PD) is above 0.7 V, the diode is considered to be:

    • Options
    • A. not working
    • B. forward biased
    • C. reverse biased
    • D. an open switch
    • Discuss
    • 6. What does Faraday's law concern?

    • Options
    • A. a magnetic field in a coil
    • B. a magnetic field cutting a conductor
    • C. a magnetic field hystersis
    • D. a magnetic field in a conductor
    • Discuss
    • 7. In order to sustain oscillations in a feedback oscillator, the gain should be _________ so the product of Av × B equals_______.

    • Options
    • A. reduced, one
    • B. reduced, less than one
    • C. increased, more than one
    • D. increased, much greater than one
    • Discuss
    • 8. The dc current through each diode in a bridge rectifier equals:

    • Options
    • A. the load current
    • B. half the dc load current
    • C. twice the dc load current
    • D. one-fourth the dc load current
    • Discuss
    • 9. What is the percent of regulation if Vnl = 20 V and Vfl = 19.8 V?

    • Options
    • A. 0%
    • B. 1%
    • C. .1%
    • D. 5%
    • Discuss
    • 10. The impedance is 1177 Ω.


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


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