The major difference between open- and closed-die forging without flash is: a. closed-die forging is only suitable for powder metals b. open-die forging is better appropriate for large, intricate parts and long production runs c. as a subsequent process, open-die forging is better suited for sand casting than die casting d. in closed-die forging the shape and size of the workpiece are determined by those of the dies e. none of the above

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

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