You’re Chief Financial Officer for a power company, and you consult your engineering department in an effort to minimize power-line losses. Your power plant produces 60-Hz power at 365 kV rms and 200 A rms, and delivers it via transmission lines with total resistance 100 Ω. You ask the engineers for the percentage of power that’s lost. They reply that it depends on the power factor. What’s the percentage loss for power factors of (a) 1.0 and (b) 0.60?
You’re Chief Financial Officer for a power company, and you consult your engineering department in an effort to minimize power-line losses. Your power plant produces 60-Hz power at 365 kV rms and 200 A rms, and delivers it via transmission lines with total resistance 100 Ω. You ask the engineers for the percentage of power that’s lost. They reply that it depends on the power factor. What’s the percentage loss for power factors of (a) 1.0 and (b) 0.60?
You’re Chief Financial Officer for a power company, and you consult your engineering department in an effort to minimize power-line losses. Your power plant produces 60-Hz power at 365 kV rms and 200 A rms, and delivers it via transmission lines with total resistance 100 Ω. You ask the engineers for the percentage of power that’s lost. They reply that it depends on the power factor. What’s the percentage loss for power factors of (a) 1.0 and (b) 0.60?
. A pair of power transmission lines each have a 0.95Ωresistance and carry 740 A over 9.0 km. If the rms inputvoltage is 42 kV, calculate (a) the voltage at the other end,(b) the power input, (c) power loss in the lines, and (d) thepower output.
A series RLC circuit has a capacitance C=305μF, an inductance L=131 mH, and is driven by an AC generator producing a root‑mean‑square (rms) voltage Vrms=120.0 V with a frequency f=60.0 Hz.
What resistance R is necessary to produce an rms current Irms=2.05 A?
In a place where the electrical outlets supply alternating currents with V rms = 22V and I rms = 11A, the frequency of these AC oscillations is f = 23Hz. If at time t=0s, the instantaneous current is zero, after what earliest time in ms will the instantaneous current be maximum?
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