ENE 104 Electric Circuit Theory - staff.kmutt.ac.th - kmutt
ENE 104 Electric Circuit Theory - staff.kmutt.ac.th - kmutt
ENE 104 Electric Circuit Theory - staff.kmutt.ac.th - kmutt
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<strong>ENE</strong> <strong>104</strong><br />
Example:<br />
AC <strong>Circuit</strong> Power Analysis<br />
Page 59<br />
Week #11<br />
A purely re<strong>ac</strong>tive load must be added to <strong>th</strong>e<br />
system, in parallel, since <strong>th</strong>e supply voltage must<br />
not change.<br />
The complex power supplied to <strong>th</strong>e motor must<br />
have a real part of 50-kW and an angle of<br />
cos -1 (0.8)=36.9 o<br />
50 36.9<br />
Hence, S 1 <br />
0.8<br />
50 j37.<br />
5<br />
kVA
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