An engine is disassembled after low miles and a recent overhaul because of smoking. during the engine disassembly, it is noticed that many of the crankshaft bearings have localized (in one area of each bearing) spots of wear. Technician A says that this is a normal condition for an overhauled engine. Technician B says the localized wear could be due to dirt that was left on the main bearing saddles during the recent overhaul. Who is correct?

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