Answers by alonedrifter

​Air inside a rigid, thermally-insulated tank undergoes stirring as shown in the figure below. Which one of the following options is correct?The enthalpy of the air incre...

The thermal efficiency of an ideal air-standard Otto cycle is $0.5$. The value of specific heat ratio of air is $1.4$. The compression ratio of the cycle is ___________ (...

A thermodynamically closed system contains $1 \: \mathrm{kg}$ of hydrogen. The system undergoes a reversible polytropic process with polytropic index $1.3$. The work outp...