तीन समान कुंडलियों को तार क्रम में जोड़ा जाता है जब उन्हें तीन-फेज AC आपूर्ति से जोड़ा जाता है, तो 10 A की लाइन धारा खींची जाती है। kVA और kW इनपुट क्रमशः 30 और 18 हैं। कुंडली का प्रतिरोध और प्रतिघात क्रमशः क्या है?

This question was previously asked in
MPPGCL JE Electrical 28 April 2023 Shift 3 Official Paper
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  1. 100 Ω और 60 Ω
  2. 80 Ω और 60 Ω
  3. 60 Ω और 80 Ω
  4. 80 Ω और 100 ​Ω

Answer (Detailed Solution Below)

Option 3 : 60 Ω और 80 Ω
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MPPGCL JE Electrical Fundamentals Mock Test
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Detailed Solution

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सिद्धांत

तीन-फेज सिस्टम में कुल आभासी शक्ति दी गई है:

तीन-फेज सिस्टम में सक्रिय शक्ति है:

जहाँ, VL = लाइन वोल्टेज

IL = लाइन धारा

IP = फेज धारा

गणना

दिया गया है, S = 30 kVA

P = 18 kW

VL = 1732 V

तार कनेक्शन के लिए, फेज वोल्टेज है:

VP = 1000 V

प्रति फेज प्रतिबाधा दी गई है:

R = 60 Ω

X = 80 Ω

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