Engineering, 06.11.2019 19:31 Jasten
Consider a silicon p-n step junction (or abrupt junction) at room temperature. if the doping concentrations are na = 10^17 cm^-3 and nd = 10^14 cm^-3 , what is the depletion width (also known as space charge width)? also find the maximum electric field (e0). then derive the expression for the electric field e(x), and the potential field v(x). do not use limits of integration. to find the constant of integration, use boundary conditions such as "e=e0 at x=0". once you get expressions for e(x), you can use that for v(x). use boundary conditions, "at x=-xp0, v(x)=0, and at x=xn0, v(x)=v0".
Answers: 1
Engineering, 03.07.2019 14:10, makaylashrout77
Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.
Answers: 2
Engineering, 04.07.2019 18:20, moneywaydaedae
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
Answers: 1
Engineering, 04.07.2019 19:10, juneham
Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.
Answers: 2
Consider a silicon p-n step junction (or abrupt junction) at room temperature. if the doping concent...
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