समानांतर में चल रहे दो प्रत्यावर्तकों पर विचार करें। अब यदि किसी एक प्रत्यावर्तक की उत्तेजना बदल दी जाती है तो:

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 3
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  1. आवृत्ति में परिवर्तन होगा
  2. शक्ति गुणक बदलेगा
  3. गति कम हो जाएगी
  4. भार मांग में बदलाव होगा

Answer (Detailed Solution Below)

Option 2 : शक्ति गुणक बदलेगा
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  • प्रत्यावर्तक के मामले में उत्तेजना या इसके क्षेत्र धारा को बदलने के लिए एक क्षेत्र रिओस्टेट का उपयोग किया जा सकता है।
  • यदि प्रत्यावर्तक समानांतर में चल रहे हैं, तो क्षेत्र धारा में बदलाव से सक्रिय रूप से साझा की गई शक्ति नहीं बदलेगी, लेकिन संचालन शक्ति गुणक बदल जाएगा।
  • उत्तेजना में परिवर्तन के साथ, आर्मेचर धारा बदल जाएगा जो एक छोटी राशि से सक्रिय शक्ति को बदल देगा।
  • यदि उत्तेजना कम हो जाती है, तो इसका शक्ति गुणक अधिक पश्चगामी  जाता है।
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