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  • Question

  • 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)

  • Correct Answer
  • capacitor between source and load 

    Explanation
    Capacitor offers infinite impedance to DC.

    Analog Electronics problems

    Search Results

    • 1. 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
    • 2. 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
    • 3. 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
    • 4. DC amplifiers have a tendency to be unstable.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. The output V0 in figure is

    • Options
    • A. -100 V
    • B. -100 mV
    • C. 10 V
    • D. 10 mV
      • Discuss
    • 6. The self bias provides

    • Options
    • A. stable Q point
    • B. large voltage gain
    • C. high input impedance
    • D. high base current
      • Discuss
    • 7. 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)
      • Discuss
    • 8. 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
    • 9. 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
    • 10. 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

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