2. Solved Papers
  3. Manipal Engineering

Manipal Engineering Manipal Engineering Solved Paper-2012

  • question_answer
    \[ECE\]of copper is\[3.3\times {{10}^{-7}}kg/C\]. If\[100\,\,kWh\] energy is consumed at\[33\,\,V\]in a copper voltameter, then mass of copper liberated is

    A)  3.6 kg                                  

    B)  3.3 kg

    C)  1 kg                      

    D)         1 mg

    Correct Answer: A

    Solution :

    Mass of copper liberated                 \[m=zit=z\left( \frac{P}{V} \right)t\]                     \[=(3.3\times {{10}^{-7}})\left( \frac{100\times 36\times {{10}^{5}}}{33} \right)\]                 = 3.6 kg


You need to login to perform this action.
You will be redirected in 3 sec spinner