Practice question
पूरी तरह से भरकर बहने वाले व्यास (d) के एक वृत्ताकार पाइप के लिए जलीय माध्य गहराई (hydraulic mean depth) क्या होती है?
- 1d
- 2d2
- 3d4✓
- 4d6
सही उत्तर देखें
d4
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