निम्नलिखित में से कौन सी विशेषता अवरोधन सामग्री के लिए सबसे उपयुक्त है?

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ALP CBT 2 Electrician Official Paper (Held On: 23 Jan 2019 Shift 3)
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  1. कम गलनांक
  2. अच्छी धारा चालकता
  3. उच्च पारद्युतिक ताकत
  4. कम यांत्रिक ताकत

Answer (Detailed Solution Below)

Option 3 : उच्च पारद्युतिक ताकत
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अवरोधन सामग्री में निम्नलिखित गुणधर्म होने चाहिएः

  • सामग्री में उच्च यांत्रिक क्षमता होनी चाहिए ताकि वह चालकों के तनाव और वजन का वहन कर सके |
  • अवरोधन सामग्री की सापेक्ष पारगम्यता उच्च होती है इसलिए पारद्युतिक क्षमता उच्च होती है।
  • सामग्री अत्यधिक प्रतिरोधक होनी चाहिए अर्थात उच्च अवरोधन प्रतिरोध चालक से भू-संपर्कन तक होने वाली क्षरण धारा के प्रवाह को रोक सके |
  • सामग्री गैर छिद्रित और अशुद्धियों से मुक्त होनी चाहिए |
  • सामग्री के वैद्युत और रासायनिक गुणधर्म तापमान से प्रभावित नहीं होने चाहिए |

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