एक प्रत्यावर्तित्र 0.5 पश्चगामी पर 200 kW भार की आपूर्ति कर रहा है। यदि शक्ति गुणक को इकाई तक बढ़ा दिया जाता है, तो उसी KVA भारण के लिए प्रत्यावर्तित्र कितने किलोवाट की आपूर्ति कर सकता है?

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MPPKVVCL Indore JE Electrical 21 August 2018 Official Paper
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  1. 200 kW
  2. 400 kW
  3. 800 kW
  4. 1600 kW

Answer (Detailed Solution Below)

Option 1 : 200 kW
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संकल्पना

प्रत्यावर्तित्र का शक्ति गुणक निम्न द्वारा दिया जाता है:

\(cos\space ϕ={P\over S}\)

जहाँ, cosϕ = शक्ति गुणक

P = सक्रीय गुणक

Q = क्रियाशील ऊर्जा

गणना

स्थिति 1: P = 200 kW और cosϕ = 0.5 पश्चगामी

\(0.5={200\over S}\)

S = 400 KVA

स्थिति 2: cosϕ = इकाई

माना अतिरिक्त kW को Px द्वारा निरूपित किया जाता है

PT = 200 + Px

\(1={P_T\over S}\)

PT = S

400 = 200 + Px

Px = 200 kW

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