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alinec613
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An AC source of 140V feeds 33A to a load,
though a cable represented by an unknown
resistance R in series with an unknown
inductive reactance X. The manufacturer
of that cable says, in the catalog, that
X=5R. The voltage at the load is 115V.
The power supplied by the source is measured
as 3kW. What are the active and reactive power
at the load? What percentage of the active
power delivered by the source is lost as
feeder heat losses?
This is what I have done so far
http://answerboard.cramster.com/Answer-Board/Image/200711832026333008880273800009062.jpg
Is is parallel to Vr ; angle btwn Vr and Vx = 90 degrees
VL indicates V load, Vs = V source, Vr = V resistor, Vx = V inductor
The prof gave us a hint saying that "nothing stops you from extending the lines"
but I stilll can't get all the angles and lengths.
Someone please help. I really need to know how to solve this question.
though a cable represented by an unknown
resistance R in series with an unknown
inductive reactance X. The manufacturer
of that cable says, in the catalog, that
X=5R. The voltage at the load is 115V.
The power supplied by the source is measured
as 3kW. What are the active and reactive power
at the load? What percentage of the active
power delivered by the source is lost as
feeder heat losses?
This is what I have done so far
http://answerboard.cramster.com/Answer-Board/Image/200711832026333008880273800009062.jpg
Is is parallel to Vr ; angle btwn Vr and Vx = 90 degrees
VL indicates V load, Vs = V source, Vr = V resistor, Vx = V inductor
The prof gave us a hint saying that "nothing stops you from extending the lines"
but I stilll can't get all the angles and lengths.
Someone please help. I really need to know how to solve this question.
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