A steel shaft is subjected to Normal (axial) load F
Torque T (Twisting Moment)
Bending Moment M
Find the required diameter (d) of the shaft to prevent yielding (oy 275.8 MPa): Use Tresca only: -Important: Provide the final equation function of d, F, T and M.
Numerical Application:
Case 1: T-15000 N. m ; M 12000 N. rm
Case 2: F-40000N ; M=10000 N. m ; T= 15000 N·m

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

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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]