Question
Download Solution PDFTwo 550 kVA alternators operates in parallel to supply following loads :
i. 250 kW at 0.95 p.f. lagging
ii. 100 kW at 0.85 p.f. leading
If one machine is supplying 200 kW at 0.9 p.f. lagging, then p.f. of other machine will be
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Therefore total kVA supplied by generators = Total kVA consumed by loads
Calculation:
222.22 ∠25.84° + S2 = 263.15 ∠18.19° + 117.64 ∠-31.78°
200 + j 96.85 + S2 = 250 + j 82.14 + 100 - j 61.95
S2 = 150 - j 76.66
cosϕ = 0.89 leading
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