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In an Otto cycle, air is compressed from 2.2 l to 2.26 l from an initial pressure of 1.2 kg/cm2. The net output/cycle is 440 kJ. What is the mean effective pressure of the cycle? (a) 227 kPa (b) 207 kPa (c) 192 kPa (d) 185 kPa |
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Answer» (a) 227 kPa Mean effective pressure = \(\cfrac{Net \,work \,output}{Swept \,volume}\) = \(\cfrac{440}{(2.2-0.26)\times10^{-3}}\) = 226.8 kpa = 227 kpa |
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