একটি 3-পর্যায় মোটরে, ভোল্টেজ এবং বিদ্যুৎ পরিমাপ করা হয় নীচের মত।

L1 : 230 ভোল্ট, 5 অ্যাম্পিয়ার 

L2: 230 ভোল্ট, 4.5 অ্যাম্পিয়ার 

L3: 230 ভোল্ট, 5.5 অ্যাম্পিয়ার 

1 এর পাওয়ার ফ্যাক্টর ধরে নিলে ইনপুট পাওয়ার কত?

This question was previously asked in
ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 3
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  1. 1,150 ওয়াট 
  2. 1,265 ওয়াট 
  3. 1,035 ওয়াট 
  4. 3,450 ওয়াট 

Answer (Detailed Solution Below)

Option 4 : 3,450 ওয়াট 
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Detailed Solution

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অনুসৃত ধারণা:

3 ফেজ মোটরের ইনপুট ক্ষমতা = 3 VP Icos ϕ

যেখানে, 

V= পর্যায় ভোল্টেজ

IP = পর্যায় বিদ্যুৎ 

cos ϕ = পাওয়ার ফ্যাক্টর

বিভিন্ন পর্যায় রেটিং জন্য,

3 পর্যায় মোটরের ইনপুট ক্ষমতা = Vp1 Ip1 cos ϕ + Vp2 Ip2 cos ϕ + Vp3 Ip3 cos ϕ

গণনা:

3 পর্যায় মোটরের ইনপুট ক্ষমতা = (230 X 5 X 1) + (230 X 4.5 X 1) + (230 X 5.5 X 1)

3 পর্যায় মোটরের ইনপুট ক্ষমতা = 3,450 ওয়াট

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