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When a voltage v(t)=250 sin[314t-(pi/4)] is applied to a circuit,the current in the circuit is found to be i(t)=50 sin[314t-(pi/2)] amperes. Find the circuit elements,power & power factor.
a). Without calculating E(z), find its poles. b). Give the rule that you used in part (a). c). Verify the results of part (a) by calculating E(z). d). Compare the zero of E(z) with that of E(s).
The electric field intensity of a linearly polarized uniform plane wave propagating in the +z direction in seawater is E= 100 cos(10^(7) pi*t) V/m at z = 0. constant of emissivity = 8.854 * 10^(-12)
s(s^2-10+k(15s^2+2s+1)=0 Is the characteristic equation for a system in which K is a variable proportionnality factor. The system is known to be stable whrn K takes on certan values. for what range
The threshold voltage is eight times larger than the absolute value of the bulk potential, while the oxide is 20 nm thick. Find the doping density of the substrate and indicate whether the substrate
A silicon wafer has a uniform doping density of 4x10^19 atoms cm^-3 of Arsenic and 4x10^19 atoms cm^-3 of Phosphorus. Assume that all atoms are fully ionized at room temperature.
A capacitor, an electric resistance heater, and an impedance are connected in a parallel to a 120 volts, 60Hz system. the capacitor draws 50VARs, the heater draws 100 watts and the impedance coil dr
a capacitor, an electric resistance heater, and an impedance are connected in parallel to a 120 volt, 60 Hz. system. the capacitor draws 50 VARs, the heater draws 100 watts and the impedance coils d
A plumber is using an electric drill in a basement with a concrete floor.Assume his total body resistance from hands to feet is 1k ohm.The drill has a metal case that is connected to the ground wire
The Arrhenius equation is used to explain the dependance of the reaction rate coefficient, k, on temperature, T. Linearize the Arrhenius equation for the the temperature dependance of chemical react
Derive the transfer function for a system with an function u(t) and an output function x(t) described by the following differential equation; d^3x/d^5d^2x/dt^2+17d^x/dt+13=d^2u/dt+6
A 3-phase synchronous generator rated at 75 MVA, 13.8 kV (L-L) is connected to a power system that has a Thevenin equivalent of j0.23 per unit at 1.0 per unit voltage. The synchronous reactance of t
(a) Print the lowpass FIR filter coefficients and plot the frequency responses using MATLAB. Label and print your graph. (b) Determine the ripples in both pass-, and stop bands. Identify them on your
The field current of a 200kW, 230V shunt generator is 8A. When running full load at rated voltage. If the combined brush contact and armature resistance is 0.03 ohms. Determine the power generated a
A DC series generator is supplying a current of 5A to a series lighting system through a feeder of a total resistance 10 ohms.The terminal voltage is 2500V and the armature series field resistance 1
The armature of a shunt generator as a 0.05 ohms resistance. Each brush has effective resistance of 0.02 ohms. The terminal voltage is 100V while the current is 40A. What is the efficiency of the ge
A 4 pole DC generator has an armature winding containing a total of 648 conductors connected in 2 electrical parallel paths. If the flux per pole is 0.321 x 10^6 Maxwells and the speed of rotation i
During the current oscillations, the maximum current in the inductor is 1.60 A.What is the maximum energy E_max stored in the inductor at any time during the current oscillations.
Using only a 100nF capacitor and resistor(s), design a passive (meaning Av = vo/vi =1 maximum, =0 minimum) low-pass filter with a break frequency of 1000Hz. a. Sketch the schematic noting Vin, Vout
An electric heater draws an average power of 1100 Watts when plugged into a 110 V-rms outlet. Calculate the resistance of the heater and the rms current.
A parallel plate capacitor of width w, Length l, and separation d has a solid dielectric slab of permittivity ε in the space between the plates. The capacitor is charged to a voltage Vo by a
The function is to take in the values of increment inc and maximum interval value Imax and assuming the sweep interval begins at zero calculates imax, the required number of iterations using imax=ce
(a) determine the contact resistor that can go on the base if the length of the contact is 10 * Wb. (b) Plot the change in conductance in relation to varying the doping from 1014/cm3 to 1018/cm3 at