9-175 Helium gas in an ideal Otto cycle is compressed from 20°C and 2.5 to 0.25 L, and its temperature increases by an additional 700°C during the heat addition process. The temperature of helium before the expansion process is a) 1790°C b) 2060°C c) 1240°C d) 620°C e) 820°C | |
| View Solution | |
| << Back | Next >> |