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Home Electronics and Communication Engineering Analog Electronics Comments

  • Question
  • The quiescent collector current IC, and collector to emitter voltage VCE in a CE connection are the values when


  • Options
  • A. ac signal is zero
  • B. ac signal is low
  • C. ac signal is negative
  • D. either (a) or (b)

  • Correct Answer
  • ac signal is zero 

    Explanation
    Quiescent-operation means operation when ac signal is not applied.

    Analog Electronics problems


    Search Results


    • 1. The self bias provides

    • Options
    • A. stable Q point
    • B. large voltage gain
    • C. high input impedance
    • D. high base current
    • Discuss
    • 2. To prevent a DC return between source and load, it is necessary to use

    • Options
    • A. resistor between source and load
    • B. inductor between source and load
    • C. capacitor between source and load
    • D. either (a) or (b)
    • Discuss
    • 3. A forward voltage of 9 V is applied to a diode in series with a 1 k? load resistor. The voltage across load resistor is zero. It indicates that

    • Options
    • A. diode is short circuited
    • B. diode is open circuited
    • C. resistor is open circuited
    • D. diode is either short circuited or open circuited
    • Discuss
    • 4. The 'h' parameters of the circuit shown in the figure are hib = 25 ?, hfb = 0.999 and hob = 10-6? The Voltage gain is

    • Options
    • A. 0.99
    • B. 1.98
    • C. 2.0
    • D. 4
    • Discuss
    • 5. Study the circuit of figure and examine the following statements

      1. It is an active low pass finer.
      2. It is a second order filter.
      3. The change in gain is 40 dB/decade.
      Which of the above statements are correct?

    • Options
    • A. 1, 2 and 3
    • B. 1 and 2
    • C. 1 and 3
    • D. 2 and 3
    • Discuss
    • 6. Figure shows the self bias circuit for CE amplifier and its equivalent circuit. VBB and RB respectively are

    • Options
    • A. 10 V and 4 k ohm
    • B. 5 V and 4 k ohm
    • C. 2 V and 4 k ohm
    • D. 2 V and 10 k ohm
    • Discuss
    • 7. In a circuit of figure, Vs = 10 cos(?t) power drawn by the 2? resistor is 4 watts. The power factor is

    • Options
    • A. 0.3
    • B. 0.4
    • C. 0.6
    • D. none
    • Discuss
    • 8. In a BJT circuit a pnp transistor is replaced by npn transistor. To analyse the new circuit

    • Options
    • A. all calculations done earlier have to be repeated
    • B. replace all calculated voltages by reverse values
    • C. replace all calculated currents by reverse values
    • D. replace all calculated voltages and currents by reverse values
    • Discuss
    • 9. An amplifier has a large ac input signal. The clipping occurs on both the peaks. The output voltage will be nearly a

    • Options
    • A. sine wave
    • B. square wave
    • C. triangular wave
    • D. (a) or (c)
    • Discuss
    • 10. If an amplifier with gain of - 1000 and feedback factor ? = - 0.1 had a gain change of 20% due to temperature, the change in gain of the feedback amplifier would be

    • Options
    • A. 10%
    • B. 5%
    • C. 0.2%
    • D. 0.01%
    • Discuss


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