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A 350-km, 500-kV, 60-Hz, three-phase uncompensated line has a positive-sequence series reactance
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Chapter 5 Solutions
POWER SYS. ANALYSIS+DESIGN
- Suppose we have an 80-lb lead-acid battery. 10% of the weight of the battery is active material on the plates, i.e., we have a total of 8 lb of active Pb and PbO, on the plates that can be used to make electric power. Use the Gibbs free energy method to estimate the total stored energy in the battery. Assume that the open circuit voltage for a lead-acid cell is 2.1 V. [The answer should be a little less than 1 kilowatt-hour of energy.]arrow_forwardwhere is it demonstrated that the Hamiltonian circuit's tour length is, at most, 4/3 times that of the ideal TSP trip.arrow_forwardElectromagnetic Pulse propagating at oblique angle to a dielectric interface Consider a gaussian wave pulse propagating along the z-axis from region 1 with refractive index n1 and onto a dielectric interface y = m z (for all x). To the left of this dielectric interface, the refractive index is n2. Devise an initial value computer algorithm to determine the time evolution of the reflected and transmitted electromagnetic fields for this pulse. e.g., n1 = 1 , n2 = 2 initial profile (t = 0, with z0 < 0) Ex = E0 exp[-a (z-z0)^2] By = n1 * Ex Choose parameters so that the pulse width is at least a fact of 8 less than the z- domain of integration ( -L < z < L). For the slope of the interface, one could choose m = 1.arrow_forward
- A 140-J of work is done on a gaseous refrigerant as it undergoes compression. What is the total amount of energy transferred by heat if there is an increase of 120 J in the internal energy of the system?arrow_forwardThe complex formed between Cu(I) and 1,10-phenanthroline has a molar absorptivity of 7000 L L cm-1 mol-1 at 435 nm, the wavelength of maximum absorption. Calculate (a) the percent transmittance of the solution.arrow_forward1.) The distribution of I & Q is zero-mean Gaussian; their phase, amplitude, and power are uniform, Rayleigh, and Exponential distribution. Using the given I & Q data to show these distributions. Requirements: In this project, please use the I & Q data from 1000 gate to demonstrate these PDFS. Data from azimuthal angle between 5° to 30°, range between 20 km to 50 km are suggested used in this analysis.arrow_forward
- A spontaneous exothermic reaction at a constant temperature and pressure of 50∘C and 2.0 atm has an enthalpy decrease of 350 kJ. This reaction performs 150 kJ of useful work, which is 54% of the maximum work that could be done. What is the reaction’s change of entropy? Express your answer to two significant figures and include the appropriate units.arrow_forwardB. A 1.5m dipole transmitting antenna located with its eenter at the origin and radiates RF signal with frequency 0.1GHZ. A second dipole receiving antenna of length 0.75m is placed in such a way that its axis is purallel with first one at distance 400m, the delivered power in the receiving antenna is -38. 92d3. What is the transmitting power in watts from transmitting antenna?arrow_forwardFind the impedance theoretically of a wire if it carries the frequency 10 kHz have a voltage is 8v, the current is 2mA, resistance is 13 k, inductance 29 mH and capacitance 0.1 ufarrow_forward
- 2.897 lb air is at 1 atm, 360 °R in a vertical piston-cylinder assembly. The air is compressed to state 2 at 111.6 atm, and 250.95 °R, and obeys the polytropic rule (pvn = constant). During the process, 170 Btu releases from the process in the form of heat transfer. Determine: The specific volume of the air at state 1 and state 2 in The work of the process in Btu. The specific internal energy of the air at state 2 in Btu/lb If the area of the piston is 5 in.2 and the mass of the piston is negligible, compute the force that exerts on the piston to maintain the pressure at state 2. Given that the atmospheric pressure is 1 atm.arrow_forwardIn the Bohr model of the hydrogen atom, an electron in the 4th excited state moves at a speed of 1.37 x 105 m/s in a circular path of radius 8.46 x 1010 m. What is the effective current associated with this orbiting electron? 4.12373E3 Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. mAarrow_forwardSolve the heat flow equation K (aT/ 21 - 0532: at) = (a2T/ax2), where K is PROBLEM %3D the thermal diffusivity of the homogeneous medium. Apply the algorithm to the case of a copper bar of thermal diffusivity of 1.14 cm2/sec with 1 end maintained at 100°C while the other end is held at 0°C. Let the bar be 8 cm longarrow_forward
- Operations Research : Applications and AlgorithmsComputer ScienceISBN:9780534380588Author:Wayne L. WinstonPublisher:Brooks ColeC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
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