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  • Question
  • The 'h' parameters of the circuit shown in the figure are hib = 25 ?, hfb = 0.999 and hob = 10-6? The Voltage gain is
    The 'h' parameters of the circuit shown in the figure are hib = 25 ?, hfb = 0.999 and hob = 10-6? Th


  • Options
  • A. 0.99
  • B. 1.98
  • C. 2.0
  • D. 4

  • Correct Answer


  • Explanation
    The 'h' parameters of the circuit shown in the figure are hib = 25 ?, hfb = 0.999 and hob = 10-6? Th

    Zi = 25 + 10-6 x 0.99 x 104 ⟹ 25

    The 'h' parameters of the circuit shown in the figure are hib = 25 ?, hfb = 0.999 and hob = 10-6? Th.


    Analog Electronics problems


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

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

    • Options
    • A. -100 V
    • B. -100 mV
    • C. 10 V
    • D. 10 mV
    • Discuss
    • 4. In figure, VEB = 0.6 V, ? = 99. Then VC and IC are

    • Options
    • A. 9.3 V and 1.98 mA respectively
    • B. 4.6 V and 1.98 mA respectively
    • C. 9.3 V and 0.02 mA respectively
    • D. 4.6 V and 0.02 mA respectively
    • Discuss
    • 5. Assertion (A): For large signal variations an amplifier circuit has to be analysed graphically

      Reason (R): The output characteristics of a transistor is nonlinear.


    • Options
    • A. Both A and R are correct and R is correct explanation for A
    • B. Both A and R are correct but R is not correct explanation for A
    • C. A is correct R is wrong
    • D. A is wrong R is correct
    • Discuss
    • 6. 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
    • 7. 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
    • 8. The self bias provides

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


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