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OEM2-EN-dispozitive semiconductoare(A)

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“ANR — OEM2-EN-dispozitive semiconductoare(A)” contains 27 questions across 1 collection.

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Sample questions and answers

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The main application for SCRs and triacs is:

One correct answer

  • as audio amplifiers.
  • as oscillators.
  • for control of current in the milliampere range.
  • for control of power in the watt or kilowatt range.✓ Correct answer
A PN-junction diode is said to be forward- or reverse-biased depending on:

One correct answer

  • the type of dopant used.
  • the polarity of the AC voltage applied across it.
  • the polarity of the DC voltage applied across it.✓ Correct answer
  • all of these
The three leads of a bipolar junction transistor are:

One correct answer

  • the anode, the base, and the cathode.
  • the emitter, the gate, and the anode.
  • the base, the collector, and the emitter.✓ Correct answer
  • the grid, the anode, and the cathode.
Field-effect transistors (FETs) operate:

One correct answer

  • on the same principle as magnetic field devices.
  • with a small input voltage and current.
  • with a small input voltage but practically no input current.✓ Correct answer
  • with high input current.
Breakover voltage of a diac is:

One correct answer

  • never to be exceeded.
  • the point at which its resistance changes from high to low.✓ Correct answer
  • the same as avalanche voltage.
  • always less than 0.6 V.

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