Electronic Devices-BJT and FET Frequency Response

Electronic Devices-BJT and FET Frequency Response
21. Which of the following statements is true for a square-wave signal?
  • It is composed of both even and odd harmonics.
  • It is composed only of odd harmonics.
  • It is composed only of even harmonics.
  • The harmonics waveforms are also square waves.
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22. A change in frequency by a factor of ________ is equivalent to 1 decade.
  • 2
  • 10
  • 5
  • 20
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23. In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage for frequencies much larger than the cutoff frequency in the low-frequency region?
  • About 0º
  • 45º
  • About 90º
  • None of the above
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24. In the ________-frequency region, the capacitive elements of importance are the interelectrode (between terminals) capacitances internal to the active device and the wiring capacitance between the leads of the network.
  • low
  • mid
  • high
  • [NIL]
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25. What is the ratio of the output power to the input power at the cutoff frequencies in a normalized frequency response plot?
  • 0.25
  • 0.50
  • 0.707
  • 1
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26. Single-element semiconductors are characterized by atoms with ____ valence electrons.
  • 3
  • 4
  • 5
  • 2
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