Engineering, 11.02.2020 22:56 xojade
You are given a piece of material (you suspect it's a semiconductor but are not sure) and know nothing about it (except that it looks transparent to the eye).
a. What is the minimum band gap energy that you expect this material to have?
b. Describe an experiment to determine its conductivity. Be specific about details: set up, what equipment is used to measure each variable, and plot the data you expect to get.
c. Describe an experiment (or set of experiments) to determine its energy gap, electron affinity, and ionization potential. Be specific as in b.
d. From the above experiments, how can you be sure it's a semiconductor and not a metal?
Answers: 2
Engineering, 04.07.2019 18:10, DestyHilBan1183
Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.
Answers: 3
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