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A 150 km long, 3-phase, 400 kV overhead line is used to transmit 1800 MW to a distribution area at 0.9 power factor lagging. The line parameters per phase and per unit length in standard notation are as follows: r = 0.017 Ω/km, x = 0.27 Ω/km and y = j10.58 μS/km. Using the medium-line representation method and pi-equivalent circuit, calculate:
a) The required sending-end voltage.
b) The power loss in the line.
c) The efficiency of the transmission.
Magnetic materials (A) provide path to magnetic flux. (B) are good insulators. (C) are semiconductors. (D) None. Ans: Magnetic materials provide path to
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Molecular Chain (MIT, Princeton, Colorado) Consider a one-dimensional chain consisting of N molecules which exist in two configurations, α, β, with corresponding energies and
Q. With the use of a K map, simplify the following Boolean expressions and draw the logic diagram.
Knowledge of science and engineering fundamentals Knowledge of basic science and engineering fundamentals is necessary for engineers to develop solution to any complex problem
what is the graph of inverting comparator,if input voltage less than reference voltage
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assignment on lack of education
Q. A wire with n = 10 30 electrons/m 3 has an area of cross section A = 1mm 2 and carries a current i = 50 mA. Compute the number of electrons that pass a given point in 1 s, an
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