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A three-phase, 60-Hz transmission line has a total series impedance of 22.86 62.3° Ω per phase. It delivers 2.5 MW at 13.8 kV to a load connected to its receiving end. Compute the sending-end voltage, current, real power, and reactive power for the following conditions:
(a) 0.8 power factor lagging.
(b) Unity power factor.
(c) 0.9 power factor leading.
Terminal voltage on the high-voltage side when the transformer is delivering full load at 230 V and 0.866 power factor lagging.
(1) Determine the mass and the temperature of the steam in an insulated piston-cylinder arrangement if sufficient steam is admitted to displace the piston by one cubic foot. The cylinder originally is empty, and the piston main- tains a constant pres..
Large blooms of algae result from high nutrient loading in rivers and lakes, for example, as a result of runoff of fertilizers from agricultural fields.
Compute the theoretical density of diamond given that the C-C distance and bond angle are 0.154 nm and 109.5°, respectively. How does this value compare with the measured density?
In a process for the production of acrylic fibers by the emulsion polymerization of acrylonitrile, the unreacted monomer is recovered from water by distillation. Acrylonitrile forms an zoetrope with water and the overhead product from the column c..
The reflux is saturated liquid with L/D = 3. Feed is on the optimal stage. Vapor-liquid equilibrium data are given in Exercise 7.29.
An EMG recording of skeletal muscle activity has been sampled at 200- 250 Hz and correctly digitized. What is the highest frequency of interest in the original EMG signal?
A four-pole, dc series motor has a lap-connected, two-layer armature winding with a total of 400 conductors. Calculate the gross torque developed for a flux per pole of 0.02 Wb and an armature current of 50 A. (Note: The number of parallel paths i..
Estimate the density of air, If we approximate the atmosphere to be 79% nitrogen (N_2) by volume and 21% oxygen (O_2)
An overall average of 65,000 lb of water per 24-h day must be evaporated during each 30-day period. (b) An overall average of 81,000 lb of water per 24-h day must be evaporated during each 30-day period.
Derive the following equation for the optimum outside diameter of insulation on a wire for maximum heat loss:
For this assignment you will undertake an analysis based on a self-designed fictitious study that utilizes statistical analyses. You will first develop a fictitious problem to examine. It can be anything.
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