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To increase the efficiency of a carnot e...

To increase the efficiency of a carnot engine, will you prefer to (i) increase the temp. of source by`10K` or (ii) decrease the temp. of sink by `10K`?

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The correct Answer is:
To increase the efficiency of the carnot engine the decreasing of temperature of the sink will be preferred. It is because, decreasing the temperature of sink by `10K` brings about greater increase in the efficiency of the heat engine then that is achieved by increasing the temperature of the source by `10K`.
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Knowledge Check

  • A carnot engine has efficiency of 50% when its sink is at 227^(@)C . What is the temperature of source

    A
    `727^(@)C`
    B
    `454^(@)C`
    C
    `113.5^(@)C`
    D
    `500^(@)C`.

  • The efficiency of Carnot engine when source temperature is T 1 and sink temperature is T 2 will be

    A
    ` (T_(1)-T_(2))/(T_(1))`
    B
    `(T_(2)-T_(1))/(T_(2))`
    C
    `(T_(1)-T_(2))/(T_(2))`
    D
    `(T_(1))/(T_(2))`

  • A Carnot's engine has an efficiency of 50 % at sink temperature 50^(@)C .Calculate the temperature of source.

    A
    `133^(@)C`
    B
    `143^(@)C`
    C
    `100^(@)C`
    D
    `373^(@)C`

    • Similar Questions

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    Find the efficiency of a carnot engine whose source and sink are 327^(@)C and 27^(@)C ?

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    Efficiency of a carnot engine is 0.4 , when temp. of sink is 300K . What is temp. of source? If temp. of source is kept same and that of sink is lowered by 50^(@)C , what would be the efficiency?

    The efficiency of the carnot engine is (1)/(6) . On decreasing the temperature of the sink by 65 K, the efficiency increases to (1)/(3) . Find the temperatures of the source and the sink.

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