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Subelement C
Components
Section 28
Devices
What describes a diode junction that is forward biased?
  • It is a high impedance.
  • It conducts very little current.
  • Correct Answer
    It is a low impedance.
  • It is an open circuit.
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Why are special precautions necessary in handling FET and CMOS devices?
  • They have fragile leads that may break off.
  • Correct Answer
    They are susceptible to damage from static charges.
  • They have micro-welded semiconductor junctions that are susceptible to breakage.
  • They are light sensitive.
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What do the initials CMOS stand for?
  • Common mode oscillating system.
  • Complementary mica-oxide silicon.
  • Correct Answer
    Complementary metal-oxide semiconductor.
  • Complementary metal-oxide substrate.
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What is the piezoelectric effect?
  • Correct Answer
    Mechanical vibration of a crystal by the application of a voltage.
  • Mechanical deformation of a crystal by the application of a magnetic field.
  • The generation of electrical energy by the application of light.
  • Reversed conduction states when a P-N junction is exposed to light.
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An electrical relay is a:
  • Current limiting device.
  • Device used for supplying 3 or more voltages to a circuit.
  • Component used mainly with HF audio amplifiers.
  • Correct Answer
    Remotely controlled switching device.
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In which oscillator circuit would you find a quartz crystal?
  • Hartley.
  • Correct Answer
    Pierce
  • Colpitts.
  • All of the above.
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