যদি একটি 200 kVA, 2000/200 V ট্রান্সফরমারের গৌণ উইন্ডিংয়ে 100টি ঘুর্ণন থাকে, তাহলে এর প্রাথমিক ঘুর্ণনের সংখ্যা হল __________।

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 1
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  1. 1000 ঘুর্ণন
  2. 10 ঘুর্ণন
  3. 100 ঘুর্ণন
  4. 10000 ঘুর্ণন

Answer (Detailed Solution Below)

Option 1 : 1000 ঘুর্ণন
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Detailed Solution

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ধারণা:

একটি ট্রান্সফরমারে, ভোল্টেজ এবং ঘূর্ণনের সংখ্যা নিম্নরূপে সম্পর্কিত

\(\frac{{{V}_{1}}}{{{V}_{2}}}=\frac{{{N}_{1}}}{{{N}_{2}}}\)

যেখানে,

V1 = ট্রান্সফরমারের প্রাথমিক দিক জুড়ে বিদ্যমান ভোল্টেজ

V2 = ট্রান্সফরমারের গৌণ দিক জুড়ে বিদ্যমান ভোল্টেজ

N1 = ট্রান্সফরমারের প্রাথমিক দিক জুড়ে বিদ্যমান ঘূর্ণনের সংখ্যা

N2 = ট্রান্সফরমারের গৌণ দিক জুড়ে বিদ্যমান ঘূর্ণনের সংখ্যা

গণনা:

V1 = 2000

V2 = 200

N= 100

\(\frac{2000}{200}=\frac{{{N}_{1}}}{100}\)

 N= 1000

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