500 km2 के बेसिन के क्षेत्रफल से अवलोकन किया गया वार्षिक अपवाह 150 Mm3 है और उसी वर्ष के दौरान बेसिन के ऊपर वार्षिक वर्षा 750 mm है। अपवाह गुणांक क्या होगा?

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UPPSC AE Civil 2019 Official Paper II (Held on 13 Dec 2020)
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  1. 0.2
  2. 0.67
  3. 0.4
  4. 0.5

Answer (Detailed Solution Below)

Option 3 : 0.4
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स्पष्टीकरण

∵ हम जानते हैं कि,

अपवाह गुणांक = अपवाह /वर्षा

दिया गया है,

अपवाह = 150 Mm3

वर्षा की गहराई = 750 mm

क्षेत्रफल = 500 km2

आयतन के संबंध में गहराई = 0.75 × 500 = 375 Mm3 (1 million-m = 106 m)

अपवाह गुणांक  = 150/375

= 0.4

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