Tilul
ee 2401 (semiconductor devices
homework #1
tantalum (a) crystalizes in a bcc structure. calculate the radius of a ta atom (in a) if its
density is 16,6 gm/cm' and atomic weight is 180.9 gm per mole.
1011

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.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way

Vibration monitoring this technique uses the noise or vibration created by mechanical equipment and in seme cases by plant systems to detemine their actual condtion. a)- true b)- false