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A certain three-port network is lossless and reciprocal, and has S13 = S23 and S11 = S22. Show that if port 2 is terminated with a matched load, then port 1 can be matched by placing an appropriate reactance at port 3.
Three loads are connected in parallel across a single-phase source voltage of 240 V (RMS). Load 1 absorbs 12 kW and 6.667 kVAR; Load 2 absorbs 4 kVA at 0.96PF leading; Load 3 absorbs 15 kW at unity power factor.
For a "Personal water craft" water is pumped from beneath the craft and discharged out the rear in a 1.25 inch diameter stream at a velocity of 75 ft/sec. Assuming that the craft and rider weighs 650lbs find the force acting on the craft and maxim..
A transmission line is specified by the following, while operated at omega w=6*10^8 rad/s, L'= 0.4*10^-6 H/m, C'=40*10^-12 F/m, G'=80*10^-6 S/m, and R'=20 ohms/m. Find the attenuation rate after a wave propagates 10 meters on this line.
In the presentation, the presenter, Mr. Rob Tucker discussed three types of disturbance mitigation responses or measures. List the three mitigation types and give a short definition of each of the mitigation type.
the saturated liquid and vapor mixture at t=300c and quality of 75%.the mixture occupies a volume of 0.05 m^3 (a) find the specific volume in m^3/kg (hints: vf= 0.0014 vg=0.02167m^3/kg at t =300c) (b) find the mass of the mixture in kg.
Sketch the amplitude spectrum of a DTMF signal with finite duration. You should make this sketch by hand, using the Fourier transform expression obtained in part 1). What happens to the DTMF spectrum when T is "too small"
determine that the total field B within the sample is one tesla. Calculate M and determine what percentage of the volume now consists of domains with magnetization parallel to the field.
Assume that a receiver has a first amplifier stage with a 5K input resistance, a power gain of 300, an input audio signal of 20 uV, and an operating temperature of 27'C. When the amplifier is operating with a bandwidth first of 10 MHz
Problems for the basic concepts of Induction motor(IM) taking care of slip and syncronous speed and motor speed and its relationship, A 50 Hz induction motor operates in such a way that the slip is 1.45.
Laplace transform of a pulse, Consider computing the Laplace transform of a pulse: use the integral formula to find P(s)
compute the power loss in a transmission line with a resistance of 0.05 ohms/mile. Compute the power loss if 500kW of power is transmitted from a power generating station to cities at distances of 20,30,40....100 miles at 100v and 200v.
Consider the signal x (t) = 10+ 20 cos (100*2 t + 4) + 10 cos (250*2 t ) A. Using Euler's relation, the signal x(t) defined by the above equation can be expressed as a sum of complex exponentials in the form X(t) = x0 + Re{k=1N Xkejk2fot}
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