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VIT Engineering VIT Engineering Solved Paper-2014

  • question_answer
                     The amplification factor of a triode is 50. If the grid potential is decreased by 0.20 V. What increase, in plate potential will keep the plate current unchanged?

    A)  5V                                         

    B) 10V

    C) 0.2 V                                     

    D)  50 V          

    Correct Answer: B

    Solution :

    \[AB=\sqrt{{{\left( 2-0 \right)}^{2}}+{{\left( 3-4 \right)}^{2}}+{{\left( -1-1 \right)}^{2}}}\] \[=\sqrt{4+1+4}=3\]             \[\text{l=}\frac{\text{100}}{\text{10}}\text{=10A}\]                    \[\text{E=}\frac{\text{1}}{\text{2}}\text{L}{{\text{l}}^{\text{2}}}\]                                        


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