Question
Download Solution PDFदो-वाटमीटर विधि द्वारा शक्ति मापन में, वाटमीटर 200 W और -200 W पढ़ते हैं। शक्ति गुणांक ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFशक्ति मापन की दो वाटमीटर विधि
वाटमीटर के पाठ्यांक हैं:
\(W_1=V_LI_Lcos(30+ϕ)\)
\(W_2=V_LI_Lcos(30-ϕ)\)
जहाँ, \(ϕ=tan^{-1}({\sqrt{3}(W_1-W_2)\over W_1+W_2})\)
शक्ति गुणांक cosϕ द्वारा दिया गया है।
परिणाम:
दिया गया है, W1 = 200 वाट और W2 = -200 वाट
\(ϕ=tan^{-1}({\sqrt{3}(200-(-200))\over 200-200})=tan\space (\infty)\)
ϕ = 90°
शक्ति गुणांक = cos 90° = 0
Last updated on May 29, 2025
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