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Sketch the appropriate equivalent circuit and phaser diagram and, assuming step-down operation, determine (a) the magnetizing current and the core-loss component of exciting current; (b) the excitin
A core-type transformer rated at 37.5 kVA, 2400/480 V, and 60 Hz has a core whose mean length is 1.07 m and whose cross-sectional area is 95 cm^2. The application of rated voltage causes a magnetic
What is the capacitance ratio for the capacitors with Ta2O5 and oxide/nitride/oxide dielectrics for the same thickness, provided the oxide/nitride/oxide has thickness ratio 1:1:1 for the oxide to th
A circular capacitor of radius r is made using SiO2 as the dielectric on a silicon wafer. If a trench of depth l is made to replace the circular capacitor with the trench capacitor with trench depth
Two charges, q and 5q, are separated by a distance d in air. Assume that the charge q is at the origin and the charge 5q is at x = d. A third charge is placed on the x axis so that the entire system
if the user enters an invalid response (i.e.- anything other than ‘y', ‘Y', ‘n', or ‘N') the program should print an appropriate admonishment and repeat the question. Do not
one of a handful of planned air car models can hit 68 mph and has a range of 125 miles. it will take only few minutes to refuel at gas station equipped with costume air compressor unit. it should co
find the force between a charged circular loop of radius b and uniform charge density l and a point charge Q located on the loop axis at a distance h from the plane of the loop. what is the force wh
Assume the temperature is 300K and mobilities are u_n = 1300 cm^2/Vs and u_p = 450 cm^2/Vs. a. What are the majority and minority carrier concentrations b. What is the resistivity of the sample c. Wha
(a)find the work done in moving a point charge +2C from (2,0,0) to (0,2,0) and then from (0,0,0) to (0,2,0). (b)find the work done in moving a point charge +2C from (2,0,0) to (0,2,0) along the straig
The doping level of N-type semiconductor is Nd= 5^19 cm^-3. Determine the room tempature position of the Fermi level ( with respect to the bottom of the comduction band) if the semiconductor is A).
Assuming that the effective mass of electrons in the conduction band of GaAs is temperature independent and equal to m* = 0.067mo* , determine the effective density of states Nc at T1= 77k, Tr =300k
what single amount at the end of seven years is equivalent to a uniform annual series of %5000 per year for 12 years if the interest rate is 8% compounded annually
you borrowed $10000 from a local bank with the agreement that you will pay back the loan in five years the pay back plan includes two parts: a graduated payment plan with the first payment set at 15
The light from a camera's electronic flash is produced when a high voltage, obtained by charging a capacitor, is applied to electrodes in a xenon-filled flash bulb. To what voltage would a 791. micr
Using the expression relating the rate at which current changes in an inductor to the voltage produced at it, find the voltage across the inductor when a switch supplying 7.9 A to a 2.4 mH inductor
A distortionless transmission line operating at 125 MHz has characteristic impedance = 40-ohm, attenuation constant = 0.02 Np/m and phase constant = 0.75 rad/m. Find the resistance and inductance pe
A charge q is located at each corner of an equilateral triangle of side a. Find the magnitude of the force on each charge. Sketch the directions of forces.
If the per-phase line loss in a 60-km-long transmission line is not to exceed 60kW while it is delivering 100A per phase, compute the required conductor diameter, if the resistivity of the conductor
A group of technicians is gathered around a circuit that works with one signal generator but nit with the other. No one can figure out why one generator works but not the other. What might be happen
The enclosure is to be built to have an area A of 2000 ft^2. The cost of the fence is $50 per foot for the curved portion and $40 per foot for the straight sides. Use the fminbnd function to determi
a half wave rectifier circuit with a 1K ohm load operates from a 120V rms 60-Hz household supply through a 10-to-1 step down transformer. It uses a silicon diode that can be modeled to have a 0.7V d
a potential divider has formed from 1000 ohms variable resistance. the intention is to drop 12 volts from an automobile battery to 9 volts. When the radio device was attached the voltage drops 6.1 v
An infinite sheet of uniform (constant) charge density (rho)s0 [C/m^2] is situated coincident with the x-y plane at z = 0. The sheet has a hole of radius a centered at the origin. Find the electric