1. A biaxial stress element has σx = 40,000 psi, σy = –20,000 psi, and τxy = 30,000 psi. Determine the principal stresses, maximum shear stresses, and the orientation of maximum stress elements and draw the resulting Mohr’s circle.

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

Water at 70°f and streams enter the mixing chamber at the same mass flow rate, determine the temperature and the quality of the exiting stream. 0 psia is heated in a chamber by mixing it with saturated water vapor at 20 psia. if both streams enters the mixing chamber at the same mass flow rate, determine the temperature and the quality of the existing system.

Draw the engineering stress-strain curve for (a) bcc; (b) fcc metals and mark important points.