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A torque T = 750 kN.m is applied to the hollow shaft shown that has a uniform 8-mm wall thickness. Neglecting the effect of stress concentrations, determine the shearing stress at points a and b.
calculate the required thickness in x-direction of a silicon wafer in nm to create an 0.2 ev energy difference
We have four 3-H inductances. What is the maximum inductance that can be obtained by connecting all of the inductances in series and/or parallel What is the minimum inductance
Explain what happens inside a semiconductor device when it is operating in enhancement mode.
Consider a separately-excited dc motor. Describe the speed variation of the motor operating unloaded under the following conditions:
A diode is measured to pass 0.31mA at 0.70V forward bias, and 1.12mA at 0.75 V forward bias. What are its n and Is. Assume that kT/q=0.026V. For extra credit, if the diode passes 4mA at 0.9V forward bias, what is its forward parasitic resistance
what role does imit enablement play in the following areas of kl enterprise corporate activities? by that i mean how
A desktop computer uses 60-250 W of power when active and 1-6 W of power when hibernating, depending on the model. An LCD monitor uses about 20-30 W of power, depending on the screen size.
A radio receiver has a noise power N = kTB watts, with T = 100 K and B = 1.0 MHz. The value of k is 1.38 x 10^-23 J/K. What is the noise power in dBW?
The efficiency and power factor for these conditions are 85 and 90% respectively. The combined windage, friction, and stray power losses are 1011W, the rotor conduction losses are 969W, and the stator conductor losses are 1559W.
Consider a classical model of a hydrogen atom, with nucleus of charge -e orbited by an electron of charge +e, where e = -1.6×10-19 C. If these may be modeled as point charges separated by 0.053 nm, determine the electrostatic force acting on the e..
Sketch the per-phase, per-unit equivalent circuit of the power system in Figure. (Treat each load on the systems as a resistance in series with a reactance.) Note that you do not have enough information to actually calculate the values of compon..
a) construct the straight-line Bode plot of the gain. Is this a low-pass, high-pass, bandpass, or bandstop function b) Use the straight-line plot to estimate the maximum gain and the frequency at which it occurs.
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