You need to analyze the operation and performance of a four-stroke, spark-ignition internal combustion engine (automobile engine). a)-would you analyze the engine as an open system or a closed system? b)-how many properties of the engine exhaust would you need to measure in order to determine the thermodynamic state of the exhaust gas? c)-identify a set of properties of the exhaust gas that you might measure to establish its state d)-are these properties intensive or extensive?

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain

Which one of the following faults cause the coffee in a brewer to keep boiling after the brewing cycle is finished? a. an open circuit in the heating element b. a short circuit at the terminals c. welded contacts on the thermostat d. a leak around the gasket