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The ratio of heat transfer to work transfer in the process of an air compressor reciprocating type is 1/4. If the compression follows pvn = constant, what is the value of n? Derive the equation that you use.

In such a compression process the work required is 200 kJ/kg and the specific heat at constant volume is 0.75 kJ/kg K. What rise of temperature is expected at the end of compression process?

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