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  • Question

  • The capacitor that produces an ac ground is called a(n)


  • Options
  • A. coupling capacitor
  • B. dc open
  • C. bypass capacitor
  • D. ac open

  • Correct Answer
  • bypass capacitor 

    • Transistors and Applications problems

    Search Results

    • 1. In order for feedback oscillators to have any practical value, the gain has to be

    • Options
    • A. < 1
    • B. self-adjusting
    • C. stabilized
    • D. nonlinear
      • Discuss
    • 2. Three different points are shown on a dc load line. The upper point represents the

    • Options
    • A. minimum current gain
    • B. quiescent point
    • C. saturation point
    • D. cutoff point
      • Discuss
    • 3. A source follower has a voltage gain (Av) of

    • Options
    • A. AV = gmRd
    • B. AV = gmRS
    • C.
    • D.
      • Discuss
    • 4. To get a negative gate-source voltage in a self-biased JFET circuit, you must use a

    • Options
    • A. voltage divider
    • B. source resistor
    • C. ground
    • D. negative gate supply voltage
      • Discuss
    • 5. A JFET

    • Options
    • A. is a current-controlled device
    • B. has a low input resistance
    • C. is a voltage-controlled device
    • D. is always forward-biased
      • Discuss
    • 6. The depletion-mode MOSFET

    • Options
    • A. can operate with only positive gate voltages
    • B. can operate with only negative gate voltages
    • C. cannot operate in the ohmic region
    • D. can operate with positive as well as negative gate voltages
      • Discuss
    • 7. In a class B push-pull amplifier, the transistors are biased slightly above cutoff to avoid

    • Options
    • A. crossover distortion
    • B. unusually high efficiency
    • C. negative feedback
    • D. a low input impedance
      • Discuss
    • 8. The primary function of the bias circuit is to

    • Options
    • A. hold the circuit stable at VCC
    • B. hold the circuit stable at vin
    • C. ensure proper gain is achieved
    • D. hold the circuit stable at the designed Q-point
      • Discuss
    • 9. The formula used to calculate the approximate ac resistance of the base-emitter diode (re) is

    • Options
    • A.
    • B. re ≈ 25 mV × IC
    • C.
    • D.
      • Discuss
    • 10. Which of the following conditions are needed to properly bias an npn transistor amplifier?

    • Options
    • 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.
      • Discuss

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