A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW . (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp , 85 % effIciency and 0.95 power factor leading ( 1 hp = 0 .746 kW ) . Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing 10 kW . (2) an induction motor drawing 10 kVA at 0.90 power factor lagging, and (3) a synchronous motor operating at 10 hp , 85 % effIciency and 0.95 power factor leading ( 1 hp = 0 .746 kW ) . Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
Solution Summary: The author illustrates the real, reactive, and apparent power delivered by the source. The power triangle is drawn as shown in Figure 1.
A source supplies power to the following three loads connected in parallel: (1) a lighting load drawing
10
kW
. (2) an induction motor drawing
10
kVA
at 0.90 power factor lagging, and (3) a synchronous motor operating at
10
hp
,
85
%
effIciency and 0.95 power factor leading
(
1
hp
=
0
.746
kW
)
. Determine the real, reactive, and apparent power delivered by the source. Also, draw the source power triangle.
In the zone refining of silicon, an RF-heater is used to remove trace amounts of impuritiesfrom the silicon. If the silicon has the impurity of 10^14 Co (k = 8*10^-6) what is the purityof the crystal after one pass of the zone refiner? After two passes? Plot concentration as afunction of crystal length from 0 to 8ft (total length of the crystal). The width of the moltenzone is 5”.
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