JCECE Engineering JCECE Engineering Solved Paper-2007

  • question_answer
    The operation of a nuclear reactor is said to be critical, if the multiplication factor \[(k)\] has a value

    A) \[1\]                                     

    B) \[1.5\]

    C) \[2.1\]                                  

    D)  \[2.5\]

    Correct Answer: A

    Solution :

    The multiplication factor \[(k)\] is an important reactor parameter and is the ratio of number of neutrons present at the beginning of a particular generation to the number present at the beginning of the next generation. It is a measure of the growth rate of the neutrons in the reactor. For\[k=1\], the operation of the reactor is said to be critical. Note: If \[k\] becomes greater than one, the reaction rate and the reactor power increase exponentially. Unless the factor \[k\] is brought down very close to unity, the reactor will become supercritical and can even explode.


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