The down stream portion of fall where surplus energy of water is destroyed is called ______ element.
BPSC 5 Years Past Papers Subject Wise / All — Multiple-choice practice
گرنے کے نیچے بہاؤ کا حصہ جہاں پانی کی اضافی توانائی کو تباہ کیا جاتا ہے اسے ______ عنصر کہا جاتا ہے۔
- A. Ogee
- B. None of these
- C. Notch
- D. Cistern
Correct answer
Cistern
Explanation
Explanation A cistern (or stilling basin) is used downstream of a spillway to dissipate the surplus energy of falling water. It prevents erosion and structural damage by reducing water velocity.
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