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Three single-phase transformers are used to form a three-phase transformer bank rated 13.8 kV(Δ)/120kV(Y). One side of the transformer bank is connected to a 120 kV transmission line, and theother side is connected to a three-phase load of 12MVA at 0.8 power factor lagging. Determine the turns ratio of each transformer and the line current at the 120 kV side.
temperature can be measured by measuring the resistance of a length of wire since the resistance of many materials
Describe a design for this experiment, using a sample of 30 small manufacturing businesses for a large industrial complex.
Frequency Range, Local Oscillator Frequency, Image Frequency, and Attenuation, A radio receiver for the AM broadcast band covers the frequency range 550 to 1600 kHz. The IF frequency is 455 kHz and the local oscillator is above the received signal..
Determine the magnetic field B at the point P (You do not need to derive any formulae that you use for fields due to current elements with standard shapes).
The amount of bending of the light into a material depends on the__- The wavelength of red light is:- The material surrounding the core of the optical wave-guide is called:
Show that the power in a three-phase, three-wire system with balanced loads is constant at every instant. Deduce an expression for the power in terms of the line voltage, line current, and the power-factor.
Assume that the "expert" really knows nothing about wine and randomly assigns ranks to the three wines. One of the wines is of much better quality than the others. What is the probability that the expert ranks the best wine no orse than second be..
Determine the value of the constant c such that the following functions are valid probability functions: A. p(x) = cx/20, x = 1,2,3,4,5,6 and zero elswhere. B. p(x) = c(X^2 + 1), x = 1,2,3,4,5, and zero elsewhere.
Design build and measure an RLC circuit (either parallelor serial) to show underdamped behavior. After you measure itsperformance, changed one or more components among R, L, C to capture three more traces going towards critical damping behaviorand..
Design a second stage (Rin, Rout, and Av) to meet these specifications: a) the two-stage amplifier has an open circuit voltage gain of 120 b) the open circuit voltage gain of the second stage must be in the range 50-100
Determine the Xc utilizing complex number representation instead of phasor representation
Inverse Z-transform and poles and zeros. When finding the inverse Z-transform of functions with z-1 terms in the numerator, the fact that z-1 can be thought of as a delay operator can be used to simplify the computation.
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