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A carnot engine having a perfect gas aas...

A carnot engine having a perfect gas aas the working substance is driven backwards and is used for freezing water already at `0^(@)C`. If the engine is driven by `500W` electric motor with an efficiency of `60%` how long will it take to freeze `15kg` of water? The working temps of the engine are `15^(@)C` and `0^(@)C`. The system involves no energy losses. Given latent heat of ice `=333xx10^(3)J kg^(-1)`.

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SL ARORA-THERMODYNAMICS-Exercise
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  8. The internal energy of a monatomic ideal gas is 1.5 nRT.One mole of he...

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  9. Calculate the difference between two specific heats of 1 g of nitrogen...

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  10. Calculate the gas constant for 1 g of gas from the following data : ...

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  11. Calculate difference in specific heats for 1 gram of air at N.T.P. Giv...

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  12. Calculate the ratio of specific heats for nitrogen. Given that the spe...

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  13. For hydrogen gas, Cp= 3.409 cal g^-1 ^circC^-1, CV=2.409 cal g^-1 ^cir...

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  15. Two moles of oxygen is heated at a constant pressure from 0^(@)C. What...

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  17. A gas is suddenly compressed to 1/4th of its original volume. Caculate...

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  18. A tyre pumped to a pressure of 6 atmosphere, suddenly bursts. Room tem...

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  19. 200 cm^(3) of a gas is compressed to 100cm^(3) at atmospheric pressure...

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  20. A quantity of air at 27^(@)C and atmospheric pressure is suddenly comp...

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  21. A quantity of air at normal temperature is compressed (a) slowly (b) s...

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