Calculate the radius of the largest interstitial void in the fcc ? iron lattice. the atomic radi- us of the iron atom is 0.129 nm in the fcc lattice and the largest interstitial voids occur at the (½,0,0), (0,½,0), (0,0,½), etc, type positions.

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

When at a point two solid phase changes to one solid phase on cooling then it is known as a) eutectoid point b) eutectic point c) peritectic point d) peritectoid point

Hydraulic fluid with a sg. of 0.78 is flowing through a 1.5 in. i.d. pipe at 58 gal/min. the fluid has an absolute viscosity of 11.8 x 105 lbf-sec/ft2. is the flow laminar, turbulent or within the critical range? give both a numerical reynolds number and a term answer.