Analog electronics circuits miscellaneous

Analog electronics circuits miscellaneous

Easy Questions

Analog Electronic Circuits

Analog electronics circuits miscellaneous
  1. The circuit shown below represents:










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    From given fig. we see that if any input goes low the corresponding diode will conduct and we get low output voltage. Therefore required circuit represents AND gate.


    Correct Option: B

    From given fig. we see that if any input goes low the corresponding diode will conduct and we get low output voltage. Therefore required circuit represents AND gate.


  1. The circuit shown below represent:










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    From given fig. if both of the two given input are high then it will give high output. Hence the required circuit represent OR gate.


    Correct Option: B

    From given fig. if both of the two given input are high then it will give high output. Hence the required circuit represent OR gate.


  1. Assume the diodes are ideal, find the values of I and V










  1. View Hint View Answer Discuss in Forum

    In such type of circuit arrangement at first sight it might not be obvious whether none, one or both diodes are conduction. In such type of circuit arrangement we should apply a plausible assumption, proceed with the analysis, and then check whether, we end up with a consistent solution or not.
    Let us assumed that both diodes are conducting
    i.e. VA = 0 and V = 0
    The current through D2 can be determined as

    ID2 =
    10 - 0
    		1 mA.
    10

    apply KCL at point A.
    I + 1 =
    0 - ( - 10 )
    5

    or I = 1 mA.
    Hence alternative (A) is the correct choice.


    Correct Option: A

    In such type of circuit arrangement at first sight it might not be obvious whether none, one or both diodes are conduction. In such type of circuit arrangement we should apply a plausible assumption, proceed with the analysis, and then check whether, we end up with a consistent solution or not.
    Let us assumed that both diodes are conducting
    i.e. VA = 0 and V = 0
    The current through D2 can be determined as

    ID2 =
    10 - 0
    		1 mA.
    10

    apply KCL at point A.
    I + 1 =
    0 - ( - 10 )
    5

    or I = 1 mA.
    Hence alternative (A) is the correct choice.


  1. The current ICBO.








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    ICBO is leakage current and its depends only upon the temperature i.e., increases with increase in temperature.

    Correct Option: D

    ICBO is leakage current and its depends only upon the temperature i.e., increases with increase in temperature.

  1. A transistor is said to be in quiescent state when:








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    NA

    Correct Option: A

    NA