IS

 সংকেত অনুসারে, ভূমিগত তারের রঙ সাধারণত কি হয়?

This question was previously asked in
ALP CBT 2 Electrician Previous Paper: Held on 23 Jan 2019 Shift 1
View all RRB ALP Papers >
  1. লাল
  2. সবুজ
  3. হলুদ
  4. কালো

Answer (Detailed Solution Below)

Option 2 : সবুজ
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Detailed Solution

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ক্রিয়াকলাপ

বর্ণ সংকেত

একক-পর্যায় রেখা

লাল/বাদামী

একক-পর্যায় নিরপেক্ষ

কালো/নীল

একক-পর্যায় প্রতিরক্ষামূলক ক্ষেত্র বা ভূমি

সবুজ

তৃতীয়-পর্যায় রেখা 1

লাল

তৃতীয়-পর্যায় রেখা 2

হলুদ

তৃতীয়-পর্যায় রেখা 3

নীল

তৃতীয়-পর্যায় নিরপেক্ষ

কালো

তৃতীয়-পর্যায় প্রতিরক্ষামূলক ক্ষেত্র বা ভূমি

সবুজ (বা) সবুজাভ হলুদ

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