Question
Download Solution PDFडेल्टा-संबद्ध लोड में 2 वाटमीटरों का उपयोग करके तीन-फेज शक्ति मापन में, जब लोड का शक्ति गुणांक शून्य होता है, तो 2 वाटमीटरों के रीडिंग __________ होंगे।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFशक्ति मापन की दो वाटमीटर विधि
वाटमीटर रीडिंग हैं:
\(W_1=V_LI_Lcos(30-ϕ)\)
\(W_2=V_LI_Lcos(30+ϕ)\)
जहाँ, \(ϕ=tan^{-1}({√{3}(W_1-W_2)\over W_1+W_2})\)
शक्ति गुणांक cosϕ द्वारा दिया गया है।
गणना:
दिया गया है, cosϕ = 0 ⇒ ϕ = 90°
\(W_1=V_LI_Lcos(30-ϕ)\)
\(W_1=V_LI_Lcos(30-90)\)
\(W_1={1\over 2}\times V_L\times I_L\)
\(W_2=V_LI_Lcos(30+ϕ)\)
\(W_2=V_LI_Lcos(30+90)\)
\(W_2=-{1\over 2}\times V_L\times I_L\)
यदि हम W1 और W2 दोनों को √3 से गुणा करते हैं, तो:
\(W_1={\sqrt{3}\over 2}\times V_L\times I_L\) और \(W_2=-{\sqrt{3}\over 2}\times V_L\times I_L\)
Last updated on May 29, 2025
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