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A balanced three-phase source is supplying 90 kVA at 0.8 lagging to two balanced Y-connected parallel loads. The distribution line connecting the source to the load has negligible impedance. Load 1 is purely resistive and absorbs 60 kW. Find the per-phase impedance of load 2 if the line voltage is 415.69V(rms) and the impedance components are in series.
A charged paint is spread in a very thin uniform layer over the surface of a plastic sphere of diameter 13.5 cm, giving it a charge of -13.9 µC. (a) Find the magnitude of the electric field just inside the paint layer
find the reactive vars which the compensation equipment must supply to maintain the voltage profile (a)when the line supplies load of 50 Mva at 0.85 p.f lagging (B) when the line is open circuited at the recieving end.
Pulse Generator, Using one 555 timer, design a pulse generator that will have the following continuously variable ranges
A single phase 220V system draws a current of 15A at a lagging power factor of 0.8. Calculate the value of a capacitor that can be used to improve the power factor of this system to 0.95 lagging.
Determine the distance from a parabolic reflector of diameter D=10 m to the boundary of the far-field region. The antenna is being used to transmit a 4.1 GHz signal.
a zener diode exhibits a constant voltage of 5.6 volts for currents greater than five times the knee current.Izk is specified to be 1 ma. the zener is to be used in the design of a shunt regulator fed from a 15 volts supply .
Calculate the probability of finding an electron at the bottom edge of the conduction band. Also calculate the probability of not finding an electron at the top edge of the valance band.
Find the associated answers for: total circuit impeadance (Zt), Current source (RMS), Vc (RMS) w/ power factor, Vr (RMS), all in complex form/ rectangular form. Remember each question has to be done three times, one for each frequency.
One rod is made from lead and another from quartz. The rods are heated and experience the same change in temperature. The change in length of each rod is the same. If the initial length of the lead rod is 0.13 m, what is the initial length of the ..
A horizontal beam of negligible weight is 38ft long andis supported by columns on each side. a verticle load of 68000lbs is applied to the beam at a distance X from the left end. find the X in ft so that raction at the left column is 47000 lbs
signals are to be sampled at rates no less than their respective nyquist rates and are to be word-by-word multiplexed . this can be achieved by multiplexing the PAM samples of the four signals and the binary coding the multiplexed samples (as in t..
Find the maximum allowed developed torque and corresponding motor speed that will ensure that no more than 25% of the power is lost in conductive losses in the armature and field windings.
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