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Calculate the composition of HgxCd1-xTe which can be used for a night vision detector with bandgap corresponding to a photon energy of 0.1 eV. Bandgap of CdTe is 1.6 eV and that of HgTe is -0.3 eV a
In the He Ne laser, an energetic electron is accelerated by the applied field impacts and excites the He from it's ground state 1s2, to an excited H*, 1s12s1, which has one of the electrons in the 2
A voltage of 60cos(4πt) V appears across the terminals of a 3mF capacitor. Calculate the current through the capacitor and the energy stored in it from t=0 to t=0.125 seconds.
For a unity feedback control system, the forward path transfer function is: G(s) = 20/(s^2 + 14s +50) a. Determine the steady-state error for a unit step input. b. Find the steady-state error for a un
An electronic PID temperature controller is at steady state with an output of 12 mA. The set point equals the nominal process temperature initially. At t=0, the set point is increased at the rate of
When a certain perfect gas is heated at constant pressure from 15 oC to 95 oC, the heat required is 1136 kJ/kg. When the same gas is heated at constant volume between the same temperatures the heat
Design a discrete time Echo filter in order to process the demo signal Splat, using Fs = 8192 Hz. The filter should pass the original signal unchanged and the first echo should be located at 0.7 sec
A $5000 face value industrial bond can be purchased for $4920. Its dividend rate is *% and it pays dividends semianually and will mature in eight years. What are the rate of return, the nominal inte
In a unity feedback system, the forward path has a transfer function of the form G(s) = k/(1+s/ωp), and the feedback path has a gain of kfp which is less than unity. Calculate the bandwidth of
In a unity feedback system, the open-loop transfer function is of the form Gol(s) = k/(1+s/ωp). Calculate the bandwidth of the closed-loop transfer function. How does the bandwidth depend on K a
(a) Three volts is applied across a 1-cm-long semiconductor bar. The average electron drift velocity is 104 cm/s. Find the electron mobility. (b) If the electron mobility in part (a) were 800 cm2/V-s
One day, John and Amparo, a senior EE student, were trying to fix Jasmine's old-fashioned (projection) TV, which contained the circuit shown below, apparently with a bad connection. John said that t
Explain the difference in amplitude associated with the output waveform based on the operation of the semiconductor diodes. background info: in the ouput the square wave oscillates from 0V to 1.1625V.
A capacitor of capacitance C=10-6 F is discharged through the resistor of resistance R=10 Ohm. (Switch is closed at t=0) When the energy stored in the capacitor will be half of its initial value
A high-voltage transmission line connects a city to the power plant. It consists of two aluminum wires, each with resistance of 4.0 Ohm. The transmission line delivers to the city 1.7x105 kW of powe
The windings of high-current electromagnets are often made of copper pipe. The current flows in the walls of the pipe, and the cooling water flows in the interior of the pipe. Suppose the copper pip
Assume a piecewise linear model for the diode has a cut-in voltage of 0.7V and a forward resistance , rf, of zero. Determine the ripple voltage, Vr, for each of the following capacitors : 1μF, 10
Suppose the electron concentration in a piece of silicon is equal to N at x=0 and falls linearly to zero at x=L. Find the expression for the diffusion current density. Calculate the current density
An electroencephalographic (EEG) signal x(t) is recorded from the surface of the head (scalp) via an EEG recording machine. The EEG machine has a bank of 4 ideal band-pass (BP) analog filters, H1(j&
what is the change in capacitance for a diode with cross-sectional area of 0.01cm^2, dielectric constant of 11.8 when a change in the applied voltage gives a depletion distance change from 1/2 micro
A four-pole dc generator has magnetic flux of 0.06 Wb/pole, a rotational speed of 1800 rpm, full load current of 40 A, and is simplex lap wound. The generator efficiency is 91%. Pole face coverage i
A four DC shunt generator has Φ=.06 Wb/pole, Z=175, n=1800 rpm, coverage, PFC= 0.8 A. Calculate the generated voltage B. If the load voltage is 240 V and the full load current is 100A, Calculate t
A voltage of 60cos(4πt) V appears across the terminals of a 3 m-F capacitor. Calculate the current through the capacitor and the energy stored in it from t=0 to t=0.125 sec.
A ring charge has charge density ρl = ksin(φ) .It is placed on the xy-plane, centered at the origin, and has a radius of 2. (i) Find the electric field intensity E at (0, 0, h) (ii) Find
Suppose that within your web browser you click on a link to a web page. This web page contains references to five JPEG images in addition to the base HTML file. Let RTT denote the Round-Trip Time be