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case studyan important but often overlooked aspect of power system operations is the restoration of the system
two case-study reports are presented here the first describes metal oxide varistor mov arresters used by electric
a three-phase 138 kvdelta138 kv y distribution substation transformer rated 40 mva oa50 mva fa65mva foa has an 8
for the distribution substation given in problem assume that each of the four circuit breakers on the 125-kv side of
a how many mvars of shunt capacitors are required to increase the power factor on a 10 mva load from 085 to 09 laggingb
please read the focus problem at the beginning of this chapter recall that benfords law claims that numbers chosen from
draw a structured flowchart or write structured pseudo code describing your preparation to go to bed at night include
determine the force on a circular disk that has a diameter of 10 ft if it is submerged with its center 20 ft below the
determine the magnitude of the force and its location on the circular gate shown if it is hinged through its center
determine the net force and the net moment on the rectangular gate shown below the hinge is at the top and the salt
the open channel shown is 5 ft wide and the upstream depth is 6 ft the outflow structure at the end of the channel
the flow of water is from left to right in the 15-m-by-15-m square duct showndetermine the force on the circular strut
use dimensional analysis to derive an equation for the discharge per unit width q over a rectangular weirassume that
use dimensional analysis to derive an equation for the power requirements associated with the towing of a barge assume
an oil with specific gravity of 0855 is used to determine the porosity of a soil sample the dry and oil-saturated
determine the specific yield and specific retention of the soil in prob 4-3 if 50 percent of the water will drain
a soil has a coefficient of permeability of 50 dday at 25degc what is the standard coefficient of permeability of the
determine the volume of water at 50degf that would pass through the permeameter and soil sample in example during a
problemdetermine the coefficient of permeability in 1daym2 of a soil tested in the permeameter of fig if the
plot the water surface profiledetermine the discharge that could be collected from the infiltration gallery of example
probleman infiltration gallery similar to fig is fed from a parallel stream located lo00 m away determine the discharge
an unconfined aquifer has a static thickness of 200 m a 30-cm-diameter well is pumped at a constant rate of 08 m3minthe
assume that the stated drawdowns are measured from the static phreatic surface also assume that the drawdown curve does
an 8-in-diameter well penetrates an unconfined aquifer in which the static water table is 150 ft thick the coefficient
assume that a stream is regulated by a reservoir so that all discharges fall between 200 and 700 cfs and any discharge