Question
Download Solution PDFIf the load impedance is 20 - j20, the power factor is -
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The load impedance is given by:
Z = R + j X (for lagging load)
Z = R - j X (for leading load)
The power factor is given by:
\(cosϕ = {R \over Z}\)
\(cosϕ = {R \over \sqrt{R^2+X^2}}\)
Calculation:
Given, Z = 20 - j20
\(cosϕ = {20 \over \sqrt{(20)^2+(20)^2}}\)
cosϕ = 0.707 leading
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