एक हाइड्रोलिक संरचना के लिए cm2/sec में रिसन हानि कितनी होगी, यदि प्रवाह जाल में 5 प्रवाह रेखाएं  और 9 समविभव रेखाएं हैं और प्रवाह उत्पन्न करने वाला शीर्ष 20 m है, k= 2.6 x 10-6 cm/sec है?

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JKSSB JE CE 2021 Official Paper Shift 3 (Held on 28 Oct 2021)
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  1. 1.88 × 10-3
  2. 1.68 × 10-3
  3. 2.88 × 10-3
  4. 2.60 × 10-3

Answer (Detailed Solution Below)

Option 4 : 2.60 × 10-3
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Detailed Solution

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अवधारणा:

माध्यम के समदैशिक होने पर रिसन निस्सरण का निर्धारण:

रिसन निस्सरण निम्न द्वारा दिया जाता है,

 \(q = kh\frac{{{N_f}}}{{{N_d}}}\)

जहाँ, h = प्रतिप्रवाह और अनुप्रवाह स्तर के बीच द्रवचालित शीर्ष या शीर्ष अंतर या मिट्टी के माध्यम से शीर्ष हानि

Nf = प्रवाह चैनलों की कुल संख्या

N= समविभव बूंदों की कुल संख्या

k = पारगम्यता का गुणांक

गणना:

दिया हुआ है कि,

Nf = 5 - 1 = 4, Nd = 9 - 1 = 8, h = 20 m = 2000 cm

k = 2.6 × 10-6 cm/sec

∵ रिसन निस्सरण(q),

 \(q = kh\frac{{{N_f}}}{{{N_d}}}\)

\(q = 2.6 × {10^{ - 6}} × 2000 × \frac{5}{{8}} \)

q = 2.60 × 10-3  cm2/sec

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