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Discussion :: Heat Transfer,Refrigeration and Air Conditioning

  1. An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated with rubber (k = 0.15 W/mK). The cable is to be located in air (h = 6 W/m2). The critical thickness of insulation will be

    2. A.
    25 mm
    B.
    40 mm
    C.
    160 mm
    D.
    800 mm

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    Answer : Option A

    Explanation :

    No answer description available for this question.

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