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A load impedance ZL = 90 + j60 is to be matched to a 75 Ω line using a single series-stub tuner. Find two designs using open-circuited stubs.
Two point charges, and , are located at (1,2,0) and (2,0,0),respectively. Find the relation between and such that the total force on a testcharge at the point (-1,1,0) will have (a) no x-component, (y) no y-component.
Generate aprobability histogramof the number of rolls required of two dice before a sum of "7" appears (graphical answer followed by MATLAB code). The MATLAB code should simulate the results of 10,000 experiments of rolling the dice.
a) What current flows in each in each diode b) What is the small signal resistance of each diode, and the equivalent resistance of all ten diodes in combination c) What is the incremental resistance of a single diode conducting 100mA
Determine Firing angle α - the power fed back to the supply, and supply power factor and the DC machine is operated in regenerative braking mode at 1000rpm and rated motor current.
A three-phase induction motor has been tested, and has small stator resistance. At 230 V, 60 Hz, the motor produces 40 N-m at 1740 RPM.a) Given a 40 N-m load, input of 115 V and 30 Hz, what operating speed do you expect
The periodic signal x(t) is dened in one period as x(t) = te^-t; 0
Design an operational amplifier cicuit that has the following specifications: Gain=-3; Input impedence>20 kohm You have unlimited number of resistors of values 1,2,5, and 10 kohms and LM741 op amps.
A voltage divider provides a voltage of 1 Volts. Design a circuit that uses one or more op-amps so that the 1 volt is amplified by 7.
An a.c. voltage, V, comprises of a fundamental voltage of 100 V rms at a frequency of 120 Hz, a 3rd harmonic which is 20% of the fundamental, a 5th harmonic which is 10% of the fundamental and at a phase angle of 1.2
The energy density (that is, the energy per unit volume) at a point in a magnetic field can be shown to be B2/2μ, where B is the flux density and μ is the permeability. Using this result and Eq. (4 .10), show that the total magnetic field energy s..
All resistances may be ignored. The generator is supplying rated apparent power and voltage at a power factor of 0.85 lagging, when a three-phase synchronous fault occurs at the terminals of the motor. Find the per-unit subtransient current at the..
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).
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