मोटरचा _______ हे मोटरच्या भारणावर अवलंबून असते.

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 2
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  1. शक्तिगुणक
  2. व्होल्टेज रेटिंग
  3.  बंधन
  4. कार्यक्षमता

Answer (Detailed Solution Below)

Option 1 : शक्तिगुणक
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  • मोटरचा शक्तिगुणक मोटारच्या भारणावर जवळून अवलंबून असतो.

शक्तिगुणक = cosϕ = (P)/(S)

  • जेव्हा मोटरवरील भार वाढतो तेव्हा सक्रिय शक्ती वाढते आणि अभिक्रियाशील शक्ती स्थिर राहते. अशा प्रकारे, ϕ चा कोन कमी होतो आणि शक्तिगुणक (cos ϕ) किंचित सुधारतो.
  • मोटारचा शक्तिगुणक कमी असतो जेव्हा मोटर कमी भारण असते आणि जेव्हा मोटर भारण 70% पेक्षा कमी असते तेव्हा लक्षणीयरीत्या कमी होते.
  • शक्तिगुणका​ला मोटर डिझाईन रेटिंगच्या जवळ ठेवण्याचा सर्वोत्तम मार्ग म्हणजे भारणाशी मोटरशी जवळून जुळणे, जे सामान्यतः 80% ते 85% शक्तिगुणक असते.
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