BJT and FET Frequency Response Questions and Answers

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Showing 10 of 26 questions
Q11
What is the range of the capacitors Cgs and Cgd?
  • A 1 to 10 pF
  • B 1 to 10 nF
  • C 1 to 10 F
  • D 1 to 10 F
Answer: Option A
Q12
In the input RC circuit of a single-stage BJT, by how much does the base voltage lead the input voltage at the cutoff frequency in the low-frequency region?
  • A About 0º
  • B 45º
  • C About 90º
  • D None of the above
Answer: Option B
Q13
What is the normalized gain expressed in dB for the cutoff frequencies?
  • A –3 dB
  • B +3 dB
  • C –6 dB
  • D –20 dB
Answer: Option A
Q14
Which of the low-frequency cutoffs determined by CS, CC, or CE will be the predominant factor in determining the low-frequency response for the complete system?
  • A lowest
  • B middle
  • C highest
  • D None of the above
Answer: Option C
Q15
What is the ratio of the common logarithm of a number to its natural logarithm?
  • A 0.435
  • B 2
  • C 2.3
  • D 3.2
Answer: Option C
Q16
Which of the following configurations does (do) not involve the Miller effect capacitance?
  • A Common-emitter
  • B Common-base
  • C Common-collector
  • D All of the above
Answer: Option B
Q17
What magnitude voltage gain corresponds to a decibel gain of 50?
  • A 31.6238
  • B 316.228
  • C 3162.3
  • D 31623.8
Answer: Option B
Q18
By what other name(s) are the cutoff frequencies in a frequency response plot called?
  • A Corner frequency
  • B Break frequency
  • C Half-power frequency
  • D All of the above
Answer: Option D
Q19
The ________-frequency response of a transformer-coupled system is calculated primarily by the stray capacitance between the turns of the primary and secondary windings.
  • A low
  • B mid
  • C high
  • D [NIL]
Answer: Option C
Q20
What is the ratio of the output voltage to the input voltage at the cutoff frequencies in a normalized frequency response plot?
  • A 0.25
  • B 0.50
  • C 0.707
  • D 1
Answer: Option C

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