Question

A balanced star-connected load having an impedance (15+j20) ohms per phase is connected to a three-phase, 440 V, 50 Hz supply. Find the line currents and the power absorbed by the load. Assume negative phase sequence. 

          A balanced star-connected load having an impedance (15+j20) ohms per phase is connected to a three-phase, 440 V, 50 Hz supply. Find the line currents and the power absorbed by the load. Assume negative phase sequence.

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University Physics with Modern Physics
University Physics with Modern Physics
Hugh D. Young 14th Edition
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A balanced star-connected load having an impedance (15+j20) ohms per phase is connected to a three-phase, 440 V, 50 Hz supply. Find the line currents and the power absorbed by the load. Assume negative phase sequence.
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Transcript

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00:01 So here in this question we are given the per phase load impedance and per phase loss impedance is given which is equal to 15 plus j of 20 and v2 is given that is equal to 440.
00:18 So from here we have to find out the value of il first is il and the next is power absorbed by the load.
00:30 So from here we can say that let's say v of ph is equal to v of l divided by the under root 3, that will be equals to 440 divided by the under root 3, that will be equals to 240 .03.
00:43 This is due to star.
00:45 So v of ph is equal to 240 .03...
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