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Describe the principles underlying the semiconductor Iaser diode. If the current passing into an operating semiconductor Iaser is 10 mA and its quantum efficiency is 40% how much light power is it emitting if it operates at a wavelength of 0.85 μm?
Consider the two-path example d = 2 km and the receiver at 1.5 km from the transmitter moving at velocity 60 km/h away from the transmitter. The carrier frequency is 900 MHz. Plot in MATLAB the magnitudes of the taps of the discrete-time baseb..
For a chip area with area 2cm x 2cm in a 180nm logic technology, what is the approximate area of the same chip when ported to a 32nm logic technology.
A photovoltaic cell is to be used with radiation of intensity from 2 to 15mW/cm2. If an optical source with a radius of 0.1cm is 200m away from the sensor, find the maximum power if the divergence is 1.2 x 10-3 rad.
if the 150 lb man fires the o.2lb bullet with a horizontal muzzle velocity of 3000 fts measured relative to the 600lb
A plant expansion is planned in which 4 morelarge 4-kV motors must be added to the system. The current switch gear can not supply all 10 motors, because both the switch gear bus rating and the transformer rating would be exceeded.
A random signal X can be observed only in the presence of independent addictive noise N. The observed quantity is Y = X + N.The joint probability density function of X and Y is f(x,y) = K exp[-(x2 + y2 + 4xy)] all x and y
1- find the inverse Laplace transforms of the following functions: A- f1(s)= 50(s+10)/((s+5)(s+20)) b- f2(s)= (2s^2)((s+200)(s+500)) 2- find the inverse Laplace transforms of the following functions and sketch their waveforms for β >0 : a- f1(s)= (β(..
An Si device is doped at 5*10 to the power of 16 cm-3. Assume that the device can operate up to a temperature where the intrinsic carrier density is less than 10% of the total carrier density. What is upper limit for the device operation
A 25MVA, three phase, 13.5kV, Y-connected, two pole, 60Hz synchronous generator was tested by the open circuit test and short circuit test and tabulated in table 1. If the armature resistance is 0.24 ohms per phase.
Model the line as an infinite filament of current under dc conditions. Calculate the magnetic field intensity in amperes/meter at the top of the head of a man who is 2 meters tall. Assume the man is standing on the ground directly underneath the l..
if a car's key is in the car's ignition slot (indicated by an input k being 1), and a passenger is seated (indicated by an input p being 1), and the passanger's seat belt is not buckled (indicated by an input s being 0).
Write a two-part report of 3 pages each (A) on general applications in which stability plays a role (be as precise as you can), and (B) on material related to stability in this section. Use your own formulations and examples; do not copy.
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