0.8 के पश्चगामी शक्ति गुणांक वाले एक A.C. परिपथ का इनपुट 40 kVA है। तो परिपथ द्वारा खींची जाने वाली शक्ति क्या है?

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URSC (ISRO) Technician B (Electronic Mechanic): Previous Year Paper (Held on 20 Nov 2016)
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  1. 12 kW
  2. 22 kW
  3. 32 kW
  4. 64 kW

Answer (Detailed Solution Below)

Option 3 : 32 kW
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Detailed Solution

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संकल्पना:

kVAR = (kVA) (sinϕ)

जहाँ,

kVA = प्रत्यक्ष शक्ति (S)

kW = सक्रीय शक्ति (P)

kVAR = प्रतिक्रियाशील शक्ति (Q)

cosϕ = शक्ति गुणांक 

एक A.C. परिपथ में परिपथ द्वारा खींची जाने वाली वास्तविक शक्ति निम्न के द्वारा ज्ञात की जा सकती है, वास्तविक शक्ति = प्रत्यक्ष शक्ति × शक्ति गुणांक।

गणना:

यहाँ इनपुट आभासी शक्ति 40 kVA है और शक्ति गुणांक 0.8 है, इसलिए परिपथ द्वारा खींची जाने वाली शक्ति 40 × 0.8 kW = 32 kW है।

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