Thyristors and Transducers Questions and Answers

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Showing 10 of 35 questions
Q21
Three different points are shown on a dc load line. The upper point represents the
  • A minimum current gain
  • B quiescent point
  • C saturation point
  • D cutoff point
Answer: Option C
Q22
Which of the following conditions are needed to properly bias an npn transistor amplifier?
  • A Forward bias the base/emitter junction and reverse bias the base/collector junction.
  • B Forward bias the collector/base junction and reverse bias the emitter/base junction.
  • C Apply a positive voltage on the n-type material and a negative voltage on the p-type material.
  • D Apply a large voltage on the base.
Answer: Option A
Q23
Often a common-collector will be the last stage before the load; the main function of this stage is to
  • A provide voltage gain
  • B buffer the voltage amplifiers from the low-resistance load
  • C provide phase inversion
  • D provide a high-frequency path to improve the frequency response
Answer: Option B
Q24
In order for feedback oscillators to have any practical value, the gain has to be
  • A < 1
  • B self-adjusting
  • C stabilized
  • D nonlinear
Answer: Option B
Q25
To get a negative gate-source voltage in a self-biased JFET circuit, you must use a
  • A voltage divider
  • B source resistor
  • C ground
  • D negative gate supply voltage
Answer: Option B
Q26
negative gate supply voltage
  • A TRUE
  • B FALSE
Answer: Option B
Q27
If the drain, source, and channel of a MOSFET are all a p-type material, and it operates in both modes, this is an n-channel D-MOSFET.
  • A TRUE
  • B FALSE
Answer: Option B
Q28
A practical CE amplifier has the input on the base and the output taken off the emitter.
  • A TRUE
  • B FALSE
Answer: Option B
Q29
Base currents are usually small because of the physical construction of the thin and lightly doped base.
  • A TRUE
  • B FALSE
Answer: Option A
Q30
The beta of a BJT is the ratio of collector current to emitter current.
  • A TRUE
  • B FALSE
Answer: Option B

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