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A 30-kVA 8000/230-V distribution transformer has an impedance referred to the primary of 20 + j100 W. The components of the excitation branch referred to the primary side are and
(a) If the primary voltage is 7967 V and the load impedance is ZL = 2.0 + j0.7 W, what is the secondary voltage of the transformer? What is the voltage regulation of the transformer?
(b) If the load is disconnected and a capacitor of -j3.0 W is connected in its place, what is the secondary voltage of the transformer? What is its voltage regulation under these conditions?
An iron ring with a 50-cm mean diameter has a square cross-section of 4 cm2. It is wound with two coils having 1000 and 400 turns. Calculate (a) the self inductance of each coil, and (b) the mutual inductance between them.
A uniform plane wave propagating in a medium and find α, β, and H→
draw a possible three phase motor that is based on two rotating electric fields and explain 1) the basic principle; 2) the drawback of the electric field based machine when it is compared to magnetic field based machines
Using a shorted stub to match load, what is the lenght of the line where the normalized input Y is 1 + jb . If the characteristic impedance of the shorted line is 40 ohms, what is the length of the stub length.
what should be the minimum isolation between the transmitter and receiver so that the leakage signal from the transmitter is at least 10 dB below the received signal?
Find (a) the electric susceptibility of cherry-flavored Jello, (b) the permittivity of cherry-flavored Jello, and (c) the electric flux density in cherry-flavored Jello for an applied electricfield of 1 kV/m. Assume cherry-flavored Jello is line..
What determines overflow when adding or subtacting 2scomplement numbers HOw can overflow be detected
A process has dynamics G(s)=1/(4s^s+s+1). Apply a unity negative feedvack controller of the form G.c(s)=1/(s+b). (a) Report the transfer function T(s) of the closed-loop system. (b) Report T(s) to 2nd order and report the reduced transfer function T..
Draw a graph of V=IR for R=300ohms over the domain -3mA
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 draws 269 VA at a power factor. Find the Apparent P..
Calculate the location of Ei in silicon at liquid nitrogen temperature(77k), at room temperature 300k and at 100 degree celsius (let mp =1.0mo and mn= .19m0) Is it reasonable to assume that Ei is the center of the forbidden gap
Using a 3-V power supply, design a version of the circuit of fig 6.62 from the book. to provide a dc emitter current of 0.5 mA and to allow a +-1-V signal swing at the collector. The BJT has a nominal B=100. Use standard 5 % resistor values
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