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In the lucky drift model for impact ionization, it is assumed that some lucky carriers are accelerated ballistically (i.e. without scattering) to energies above threshold, causing impact ionization.
A 20-MVA, 12.2 kV, 0.8-PF lagging , Y connected synchronous generator has a negligible resistance and syncronous reactance of 1.1 per unit. The generator is connected in parallel with a 60-Hz, 12.2-
Assuming a positive sequence operation, calculate the exact ABCD parameters of the line. Compare the exact B parameter with that of the nominal n circuit. Also compare the equivalent and nominal n c
An optical waveguide with gain and cleaved facets result in high reflection of the light wave resulting in oscillations which causes the guide to become a laser. What is the reflection coefficient o
An equilateral glass prism w/ an index 1.42 has a beam of light incident on one face at an angle of θi to the normal. Determine the angle at which it emerges from an adjacent face of the prism
A collimated light beam from a helium-neon laser at 632.8 nm wavelength impinges on a dielectric film of refractive index of 2.0 at an angle of 75 degrees to normal, with a polarization at 45 degree
The discharge tube of an Argon ion laser has windows 1 mm thick, with an index of 1.46, set at the Brewster angle to the axis of the tube. Specify this angle and the polarization of light that is no
A solenoid of 1000 turns energized by a current of 250 mA. A flux meter measures a total flux of 1.0 mWb through the solenoid. The core has an average path length of 25 cm and a cross-sectional area
Design a logic circuit to form part of automobile safety arrangement, providing a warning light, consisting of an LED, if (a) whenever the door is open or (b) when the seat belt is not buckled and t
Graded-index separate confinement double heterostructure (GRIN-SCH) InGaAs/GaAs lasers with various cavity lengths were tested in the lab. The 100m wide oxide strip lasers consists of two pairs of 1
A sequential circuit receives decimal numbers encoded in BCD one digit (4 bits) at a time, starting with the least significant digit. The circuit outputs are the 10's complement of the input number,
(a)Determine the capacitance of an isolated conducting sphere of radius a in free space (Consider an outer conductor existing at r -> infinity). (b) The sphere is to be covered with a dielectric
The circuit is also required to recognize overlapping sequence such that if the input string is x = 1101111111010 then the output will be z = 0000001111000. Use D Flip-Flops AND a separate design wi
Consider a coaxial capacitor having inner radius a, outer radius b, unit length, and filled with a material with a dielectric, εr. Compare this to a parallel plate capacitor having a plate w
Inputs to the register include (i) inputs to the flip-flops, (ii) a clock signal, (ii) a signal to control the transfer and any other signal you might need to accomplish the task Note that reg
Using your multimeter, measure the DC resistance of the 100 mH inductor supplied in the parts kit. Draw a model for the real inductor that includes this resistance. Compute the maximum time constant
Obtain a primitive flow table for an asynchronous circuit with two inputs, x1 and x2, and two outputs z1,z2 that operates according to the following specs: a) when x1x2 = 00, the output z1z2 = 00
Consider the following 2-input (x1,x2) single-output (z) asynchronous circuit: The output changes from 0 to 1 only when x2 changes from 0 to 1 while x1 = 1. The output changes from 1 to 0 only when
Find the poles and zeros of H(s) and plot them in the s-plane. Find then the corresponding impulse response h(t). Determine if the impulse response of this system is absolutely integrable so that th
Wanting to make optimal use of this shared resource, you make some measurements to determine how many cores your simulation can effectively use. You find that one run of your program takes 36 hours
Given an 24 MHz bus speed. Write down the line(s) of instruction which set the ATD1 unit for 2MHz conversion frequency, 10-bit resolution and 8 A-to-D clocks per sample time.
Draw a state transition diagram for a state machine that reads in a sequence of binary digits, one at a time, and stops when it has read in five 1s (need not be consecutive). To "stop" the machine,
two conducting spheres of radii R1 and R2 that have a very high conductivity are emmersed in a poorly conducting medium of conductivity and permittivity e. the distance d between the spheres is very
A load ZL is connected to the secondary of a linear transformer that is characterized by inductance's L1 = 1 H and L2 = 4 H and a unity coefficient of coupling. If w(omega) = 1000 rad/s, find the eq
The value of Q is 1 and only if the number of clock ticks (after reset) is either a multiple of 2 or a multiple of 3. Otherwise, the value of Q is 0. Draw a state diagram for the machine using as fe