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A 120 kVA transformer is to be parallelled to a 60 kVA transformer. Each transformer has rated voltages of 10kV-120V at 60Hz.
Tranformer 1, parameters referred to primary:Rc=250k OhmReq=25 OhmXm=45k OhmXeq=150 Ohm
Tranformer 2, parameters referred to primary:Rc=400k OhmReq=30 OhmXm=90k OhmXeq=300 Ohm
When supplying a 250A load at 0.85 PF, what is the total input current and power factor if the output terminal voltage is 125V?
A DTMF signal with duration T seconds can be modeled as a sum of two cosine signals with frequencies frand fc, multiplied by a rectangle function. For example, the DTMF signal for "1" is g1(t) = rect (t/T) * [cos(2pi*687t)+cos(2pi*1209t)]
There are three gates. Each gate can be opened or closed depending on the three logic inputs: (a, b, c). Gate open logic=1, gate close= logic 0. Design a logic circuit so that no adjacent gates or outputs (x, y, z) are open at the same time.
Two points are given in Cartesian coordinates as P1 (0,0,1) and P2 (2,1,,3). vector A connects p1 (tail) to p2 [head). Find the unit vector in the direction of A in spherical and cylindrical coordinates.
A 3000-lb automobile is driven down a 5 degree incline at a speed of 50mi/h when the brakes are applied, causing a total braking froce of 1200 lb to the applied automoble. Determine the distance traveled by automobile before it come to a stop.
A student from electromechanical systems class planned to construct a transformer that will cause an actual load resistance of 98.5 ohms to appear as 172.8 ohms to an AC voltage source of 176 V rms.
A hydroelectric dam has a penstock that discharges 10^5 kg/s of water. The head of the dam is 80m. a. compute the volume of the discharged water per second (flow rate). b. compute the power of the water entering the turbine
The Y-Connected synchronous motor whos nameplate is shown in Figure 1 has a per-unit synchronous reactance of 0.9 and a per-unit resistance of 0.02. a.) What is the rated input power of this motor
An infinite plane in the xz plane carries a uniform surface charge density s1 = 75 nC/m2. A second infinite plane carrying a uniform charge density s2 = 30 nC/m2 intersects the xz plane at the z axis and makes an angle of 30°
A ball is thrown upwards with a velocity of 31 m/s at an angle of 35.5 to the horizontal from a point which is 8 m above ground level. Find: 1) The greatest height reached, above the point of projection
Consider the convolutional code described by connection polynomials
The charge leaving the positive reference terminal of a voltage source is q(t)= [6sin120pi*t - 8cos120pi*t]mC the voltage source value is v(t)= 160cos120pi*t V. A) Determine the power supplied by the voltage source at t=0
A transmission line operating at 125 MHz has Zo = 40 Ω, α = 0.02 (Np/rn), and ß = 0.75 rad/m. Find the line parameters R', L', C', and G'.
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