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A 100-kVA 8000/277-V distribution transformer has the following resistances and reactances:
The excitation branch impedances are given referred to the high-voltage side of the transformer.
(a) Find the equivalent circuit of this transformer referred to the low-voltage side.
(b) Find the per-unit equivalent circuit of this transformer.
(c) Assume that this transformer is supplying rated load at 277 V and 0.85 PF lagging. What is this transformer's input voltage? What is its voltage regulation?
(d) What are the copper losses and core losses in this transformer under the conditions of part (c)?
(e) What is the transformer's efficiency under the conditions of part (c)?
the voltage across and current through a certain device are given v(t)= 5cos(4πt), i(t)= 0.1cos(4πt) a) the instantanous power p(t) at t=0 andt=0.25s b) the average power Pav, define as the averga value p(t)
At what speed does the fan rotate?
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An initially charged capacitance discharges through a resistance. At one time constant, what percentage of the initial voltage reamins What percentage of the initial stored energy remains
Develop a comparator circuit that takes two 2-bit operands (A and B, or A1 A0 and B1 B0) and gives a single bit output if A>B. Show the truth table for the circuit, K-map, and the circuit implementation. How would you extend your solution to build..
Report Format: Develop your Course Project report in a professional format to ensure the best impact to technical reviewers. It should be APA style between 10 to 20 typed pages in length, 12-point font, Times New Roman, and double-spaced.
The bandwidth of a series resonant circuit is 400 Hz. (a) If the resonant frequency is 4000 Hz, find Q. (b) If R = 10?, what is the value of XL at resonance (c) Find the inductance L and capacitance C of the circuit.
A ring conductor of radius 1 m is located on the xy-plane, centered at (0, 0, 0), and carries a current of 1 A in the counter-clockwise direction. A line conductor parallel to the y-axis and passing through (1, 0, 1) carries an unknown current I.
Two loads are connected in parallel. The voltage across the loads is 8kVrms. The first load is rated at 12 kW with a 0.6 lagging power factor. The second load is rated at 20 kVA with a 0.8 lagging power factor. Find the complex power of the two lo..
Determine the range of DC current that can be applied to coil 2 without saturating the core when coil 1 has a steady 10A DC current in the direction that makes the flux flow CW on the ring . The Current at coil 2 has the same direction as the curr..
Assuming a uniform current destiny, Find the inductance per meter of length of a coaxial conductor with and Inner conductor of a radius .5 cm, Outer conductor having an inner radius of 2.5 cm and and outer radius of 2.7 cm.
We are required to create a digital clock for the upcoming project. The class has been very disorgainzed and hard to follow, thus I've had a hard time keeping up with what's actually going on and don't quite understand all the material.
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