Q₁) In an ideal otto cycle engine, the temperature and Pressure at the beginning of Compression are 43 C 100 kpa respectively and the temperature at the end of adiabatic Compression is 323%. if the temperature at the end of Gnstant Volume heat addition is 1500 °C alculate: (a) the Compression ratio, (b) the air- standard efficiency, (C) the temperature and pressure at the end of adiabatic expansion. Assume Yas 1.4 for

3. An ideal air-powered Otto cycle has a compression ratio of 8. Lowest and highest of the cycle temperatures are 300 K and 1340 K, respectively. Taking into account the variation of specific heats with temperature, a) The heat entering the cycle, b) The thermal efficiency of the cycle, c) Calculate the thermal efficiency of the Carnot cycle operating between the same temperature limits.

In a standard Diesel cycle, compression starts at the final ambient conditions of the addition of heat, conditions are 5.0MPA for pressure and 1750 ° C for temperature.  Using with specific heats evaluated at 300K.  Determine: a) The mean effective pressure, in kPa.  b) The thermal efficiency of the cycle.  c) The cut-off ratio.  d) The compression ratio.