An Otto cycle operates on 1lb/s of air from 15 psia and 130 F at the beginning of compression. The temperature at the end of combustion is 5,000 R; compression ratio is 5.5. for hot-air standard k=1.32. find (a) T4, OR; (b)P4, psia; (c) Qr, BTU/s; (d) thermal efficiency, and (e) work net in horsepower. (Please provide complete solution and write legibly)

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IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.