a production fixture for machining cylinder heads uses pins to locate the head for prcise machining. the head is manually instlled on and removed from the pins. the type of fit used between the pin on the fixture and the cylinder head locating the holes should be?

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?

Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]

Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false