Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-10

  • question_answer
    The working principle of a washing machine is:

    A)  centrifugation     

    B)  dialysis

    C)  reverse osmosis    

    D)  diffusion

    Correct Answer: A

    Solution :

    Washing machine works on the principle of centrifugation. Centrifugation is a process that involves the use of the centrifugal force for the separation of mixtures with a centrifuge, used in industry and in laboratory settings. More-dense components of the mixture migrate away from the axis of the centrifuge, while less-dense components of the mixture migrate towards the axis.

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