In Otto cycle process, the initial temperature and pressure at compression stroke are 273 K and90kPa and the compression ratio is 5. The heat transferred per cycle is 400 kJ/kg of air calculate the...

Extracted text: In Otto cycle process, the initial temperature and pressure at compression stroke are 273 K and90kPa and the compression ratio is 5. The heat transferred per cycle is 400 kJ/kg of air calculate the work done by kg of air and the thermal efficiency. Data given: C, = 1.005 kJ/kg - Kand C,=0.718KJ/kg - K. a) 189.8kJ/kg and 0.658 b) 189.8kJ/kg and 0.495 c) 150.88 kJ/kg and 0.658 d) 200.8kJ/kg and 0.495