Analog electronics circuits miscellaneous

Analog electronics circuits miscellaneous

Easy Questions

Analog Electronic Circuits

Analog electronics circuits miscellaneous
  1. Which one of the following is the output of the circuit shown in the following figure for the given input?










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    For input voltage greater than 3 V the diode will conduct and
    V0 = 0 V
    and for νin < 3 V diode will not conduct
    and V0 = (νin – 3) V
    Hence alternative (D) is the correct choice


    Correct Option: D

    For input voltage greater than 3 V the diode will conduct and
    V0 = 0 V
    and for νin < 3 V diode will not conduct
    and V0 = (νin – 3) V
    Hence alternative (D) is the correct choice


  1. The output waveform for the circuit given below:










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    During positive cycle when Vi < 8 V, both diode are off V0 → V0 = Vi
    for Vi > 8 V → V0 = 8 V i.e., D1 is on and D2 is off.
    During negative cycle when Vi < 6 V, both diode are off, → V0 = Vi
    for Vi > 6 V, D2 is on → V0 = – 6 V.
    Hence alternative (C) is the correct choice.


    Correct Option: C

    During positive cycle when Vi < 8 V, both diode are off V0 → V0 = Vi
    for Vi > 8 V → V0 = 8 V i.e., D1 is on and D2 is off.
    During negative cycle when Vi < 6 V, both diode are off, → V0 = Vi
    for Vi > 6 V, D2 is on → V0 = – 6 V.
    Hence alternative (C) is the correct choice.


  1. What will be the output for the circuit given below:










  1. View Hint View Answer Discuss in Forum

    for νi < 4 V the diode will conduct gives ν0 = 4 V
    for νi > 4V diode will not conduct gives ν0 = νi
    Hence alternative (D) is the correct choice.


    Correct Option: D

    for νi < 4 V the diode will conduct gives ν0 = 4 V
    for νi > 4V diode will not conduct gives ν0 = νi
    Hence alternative (D) is the correct choice.


  1. What will be the output voltage for the circuit given below:










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    Diode will not conduct if νi > – 2 V → ν0 = 0 V
    For νi < – 2 V diode will conduct
    and ν0 = νi + 2 = – 5 + 2 = – 3 V
    Hence alternative (C) is the correct choice.


    Correct Option: C

    Diode will not conduct if νi > – 2 V → ν0 = 0 V
    For νi < – 2 V diode will conduct
    and ν0 = νi + 2 = – 5 + 2 = – 3 V
    Hence alternative (C) is the correct choice.


  1. Circuit and a waveform for the input voltage is given below. The diode in circuit has cut in voltage Vγ = 0. The waveform of output voltage V0










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    As Vr = 0 (i.e., no voltage drop across diode)
    Case 1: When Vi ≥ 5 V → V0 = ν i (diode will conduct)
    Case 2: When Vi < 5 V → V0 = 5 (diode will not conduct)
    It means output in both the cases is positive and greater than zero.
    Hence alternative (D) is the correct choice.


    Correct Option: D

    As Vr = 0 (i.e., no voltage drop across diode)
    Case 1: When Vi ≥ 5 V → V0 = ν i (diode will conduct)
    Case 2: When Vi < 5 V → V0 = 5 (diode will not conduct)
    It means output in both the cases is positive and greater than zero.
    Hence alternative (D) is the correct choice.