JCECE Medical JCECE Medical Solved Paper-2004

  • question_answer A triode valve has an amplification factor of 20 and its plate is given a potential of 300 V. The grid-voltage to reduce the plate current to   zero, is :

    A)  25V          

    B)  15V

    C)  12V           

    D)  10 V

    Correct Answer: B

    Solution :

     The grid potential required to make plate current zero is given by \[{{V}_{g}}=\frac{{{V}_{p}}}{\mu }\] Given, \[{{V}_{p}}=300\,V,\,\mu =20\] \[\therefore \] \[{{V}_{g}}=\frac{300}{20}=15\,V\]

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