Acylindrical specimen of some metal alloy having an elastic modulus of 126 gpa and an original cross-sectional diameter of 4.0 mm will experience only elastic deformation when a tensile load of 2380 n is applied. calculate the maximum length of the specimen before deformation if the maximum allowable elongation is 0.44 mm.

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

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

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k