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Unformatted text preview: For the first motor: power out power factor efficiency P out1 100 hp = F p1 0.8 = 1 0.92 = P in1 P out1 1 = acos F p1 ( 29 = 36.87deg = P in1 81.054kW = sin ( 29 0.6 = S in1 P in1 F p1 = b. Find the power factor of the combination of the two machines. The total real power is the sum of the two machines' real powers and the total reactive power is the sum of the two machines' reactive powers P tot P in1 P in2 + = Q tot Q in1 Q in2 + = P tot 122.482kW = Q tot 40.726KVA = reactive F ptot cos atan Q tot P tot = from the power triangle, tan ( 29 Q P = F ptot 0.949 =...
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- Spring '12