किसी सामग्री के लिए यंग मापांक और दृढ़ता मापांक का अनुपात ज्ञात करें, यदि सामग्री के लिए प्वासों अनुपात 0.35 है।

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PGCIL DT Civil 5 May 2023 Official Paper
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  1. 0.60
  2. 1.35
  3. 2.70
  4. 0.37

Answer (Detailed Solution Below)

Option 3 : 2.70
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Detailed Solution

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अवधारणा:

प्रत्यास्थता मापांक (E), दृढ़ता  मापांक (G), और प्वासों अनुपात (μ) के बीच संबंध का वर्णन इस प्रकार किया गया है:

E = 2G (1 + μ)

गणना:

दिया गया:

μ = 0.4

E = 2G (1 + μ)

E/G = 2(1 + μ) = 2 (1 + 0.35) = 2.70

Important Points
विभिन्न प्रत्यास्थता स्थिरांकों के बीच अन्य संबंध हैं: 

  • \({\bf{E}} = \frac{{9{\bf{KG}}}}{{3{\bf{K}}\; + \,{\bf{G}}\;}}\)
  • ई = 3K(1 - 2μ)

​जहाँ K प्रत्यास्थता का थोक मापांक है।

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