1.6 मिमी त्रिज्या के वृत्ताकार अनुप्रस्थ काट के एक फ्यूज तार 16 A पर जल जाता है। यदि त्रिज्या घटाकर 0.4 मिमी कर दी जाए, तो यह किस धारा पर जल जाएगा?

This question was previously asked in
MPPGCL JE Electrical 28 April 2023 Shift 3 Official Paper
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  1. 4 A
  2. 12 A
  3. 8 A
  4. 2 A

Answer (Detailed Solution Below)

Option 4 : 2 A
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MPPGCL JE Electrical Full Test 1
100 Qs. 100 Marks 120 Mins

Detailed Solution

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संप्रत्यय

फ्यूज धारा तार के अनुप्रस्थ काट के क्षेत्रफल के समानुपाती होती है।

I α A

I α r2

गणना

दिया गया है, r1 = 1.6 मिमी पर I1 = 16 A

I2 = 2 A

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