For an n-type GaAs/p-type AlsGao As heterojunction at room temperature, AEc-0.21 eV. Find the total depletion width at thermal equilibrium when both sides have impurity concentration of 5 x 1015 cm 3. (Hint: the bandgap of Al, Ga As is given by E ()- 1.424 1.247x eV, and the dielectric constant is 12.4 -3.12x. Assume Nc and N, are the same for A GaAs with 0

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

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

Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer