# Recent questions in Applied Thermodynamics - Physics

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# Gas power cycles

in an air standard Otto cycle, the maximum and minimum temperatures are 1400°C and 15°C respectively. The heat supplied per kilogram of air is 800 kJ. Calculate the compression ratio and thermal efficiency. Calculate also the ratio of maximum to minimum pressures in the cycle. Take: as 0.717 kJ/kgK, and as 1.4
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# Reciprocating internal combustion engines

9.1 An air-standard Otto cycle has a compression ratio of 8.5. At the beginning of compression,p1 100 kPa and T1 300K. The heat addition per unit mass of air is 1400 kJ/kg. Determine (a) the net work, in kJ per kg of air. (b) the thermal efficiency of the cycle.(c) the mean effective pressure, in kPa. (d) the maximum temperature in the cycle, in K.
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# Which of the following is not allowed by the law of energy conservation?

I need to have a strong grip on this subject but this question always gets in my way. Tell me an appropriate answer to my query. I’ll highly appreciate your concerns. Thanks!``
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# Distinguish between work and energy.

I am going to participate in a talent quiz show in which this question is tested often. Please help me out with it.
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