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14 July, 13:06

A Carnot cycle is to be designed to attain

efficiency of 0.75. It temperature of the

reservoir is 727°C, then low temperature

reservoir will have to be maintained at °C

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Answers (1)
  1. 14 July, 14:54
    0
    reservoir is 727°C, then low temperature

    Explanation:

    Efficiency for any Heat engine = Work done by engine / Heat provided to the engine

    Also, for a carnot engine derived formula for Carnot Engine

    = 1 - T2/T1

    Where, T2 = sink reservoir temperature

    and T1 = source reservoir temperature

    727° C = 1000 K

    So, 0.75 = 1-T2 / 1000

    So, T2 = 1000*0.25 = 250 K = - 23 Kelvin
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