Using the isothermal transformation diagram for an iron-carbon alloy of eutectoid composition, specify the heat treatments procedure that results the final microstructure 1- 100% Martensite
2- 50% Pearlite +50% Martensite
3- 50% Martensite + 50% Bainite
4- 50% Bainite + 50% Coarse Pearlite
5- 50% Martensite+ 25% Bainite + 25% Fine Pearlite

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Select any two (2) areas of applications of chain-drive. (clo4) a)-permanent lubrication necessary b)-hydraulic forklift truck operation c)-rigging and heavy moving materials d)-relatively high maintenance costs e)-costlier than belt drives

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.