railway DFCCIL Executive 2025 Mock Test Soil Mechanics and Foundation Engineering Well Hydraulics

एक विशिष्ट संस्तर के लिए सरंध्रता (n) 0.45,  विशिष्ट पराभव (Sy) 25% है तो विशिष्ट प्रतिधारण (Sr) प्रतिशत(%) में कितना है?

1
20
2
0.2
3
65
4
2.25
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