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CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2005

  • question_answer
    If\[{{D}_{e}},\text{ }{{D}_{b}}\]and\[{{D}_{c}}\]are the doping levels of emitter, base and collector respectively of a transistor, then:

    A)  \[{{D}_{e}}={{D}_{b}}={{D}_{c}}\]

    B)         \[{{D}_{e}}<{{D}_{b}}={{D}_{c}}\]

    C)  \[{{D}_{e}}>{{D}_{b}}>{{D}_{c}}\]

    D)         \[{{D}_{e}}<{{D}_{b}}<{{D}_{c}}\]

    E)  \[{{D}_{e}}>{{D}_{c}}>{{D}_{b}}\]

    Correct Answer: E

    Solution :

    In transistor emitter is heavily doped and base is lightly doped. So,          \[{{D}_{e}}>{{D}_{c}}>{{D}_{b}}\]


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