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(a) the conductivity in a p type silicon semiconductor at T=300 K is sigma=0.25 (ohm-cm)^-1. Determine the thermal equilibrium values of electron and hole concentrations.
(b) Repeat part (a) for n type GaAs semiconductor if the resistivity is rho=2 ohm-cm.
A natural gas power plant has a condenser that extracts 18,000 Btu/kg of natural gas. Compute the mechanical energy of the turbine and the overall system efficiency.
Determine the range of values of K such that the system is stable for s(s²+4s+10)+ k (s+5)=0
A 10 microFarad capacitor is in series with a 100 ohm resistor, a switch, and a 10.0 volt battery. At time t = 0 seconds the switch is closed. What is the current in the resistor at time t = 0.1 microseconds. What is the current in the resistor at ti..
Hspice Netlist example, Often Netlist is generated by programs such as Cadence. However, on the rare occasions when one has to look at Hspice netlist
The woofer can be modeled as a series R-L low pass filter. Suppose that a given woofer has an inductance of 750 micron Hertz and a resistance of 4 Ohms. At what frequncy (in Hertz) does its frequncy response
(a) Show that the actual response at f=fT is approximately 9dB below the maximum value. What is the phase angle at this frequency (b) what is the slope of the magnitude plot for f>>fT What is the phase angle in this frequency range
(a) Draw the equivalent circuit. (b) Determine the ohmic value of the impedances. (c) Calculate the source current in amperes and in percent if the generator operating voltage is 3.8 kV (line-to-line) and a reactance of X=125% is connected in seri..
For a first order low pass filter, with a cut-off of 2 kHz, how many decades and octaves would the frequency be if the attenuation was -58 dB. What would the frequency be at that attenuation.
Consider an n-Si with doping of 9*10^16cm^-3. In a certain region of this sample, there is an electric field of 1000V/cm. Estimate the electron and hole drift velocity and the total drift current density in that region.
Compare these results with the ones for analog filter and comment. Notice that the frequency response of digital filter has linear normalized frequency in [0,f] when the bode plot gives a logarithmic frequency axis of different range.
Electrical & Instrumentation Use, State typical values for the loading effect on a low voltage AC circuit containing a lamp when measuring current with
How much power (in watts) is transferred to or from the inductor when the time is 1 ms? The current flowing through the inductor is given by 5e^-200t The inductance is 107 mH
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