Engineering Board Exam Reviewer · Three-Phase Systems in Power Applications · medium
A balanced three-phase load takes 30 kW at 0.8 power factor lagging from a 480 V line. Find the line current.
- 78.1 A
- 26 A
- 36.1 A
- 45.1 A
Answer
D. 45.1 A
Solution
P= 3,VLIL IL=P/ 3,VL = 30,000 3(480)(0.8)=45.1 A.
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