FLOW THROUGH PIPES MCQs – CHAPTER 7 DAE 10 min Score: 0 Attempted: 0/10 Subscribe 1. A long pipe is considered whose length is more than ……………………………. times of its diameter. (A) 10 (B) 100 (C) 2000 (D) 1000Show All Answers 2. Hydraulic mean depth of a circular pipe is equal to (A) d/4 (B) d/2 (C) d/6 (D) d/8Show All Answers 3. Loss of head due to sudden enlargement. (A) 0.375 V₂² / 2g (B) 0.5 V₂² / 2g (C) (V₁ − V₂)² / 2g (D) V₂² / 2gShow All Answers 4. Loss of head due to sudden contraction. (A) (V₁ − V₂)² / 2g (B) 0.5 V₂² / 2g (C) V₂² / 2g (D) 0.375 V₂² / 2gShow All Answers 5. Loss of head at entrance in the pipe. (A) (V₁ − V₂)² / 2g (B) 0.375 V₂² / 2g (C) 0.5 V₂² / 2g (D) V₂² / 2gShow All Answers 6. Loss of head at exit of pipe is given by (A) (V₁ − V₂)² / 2g (B) 0.5 V₂² / 2g (C) V₂² / 2g (D) 0.375 V₂² / 2gShow All Answers 7. Major loss of head is due to (A) Bend (B) Friction (C) Obstruction (D) All of theseShow All Answers 8. According to Darcy's formula major loss. (A) 4fLv² / 4gD (B) 4fLv² / 2gD (C) 3fLv² / 4gD (D) 5fLv² / 3gDShow All Answers 9. Hydraulic gradient "i" is calculated by (A) f / lh (B) hf × l (C) l / hf (D) hf / lShow All Answers 10. The line joining pressure heads of a liquid flowing in the pipe is termed as (A) Total energy line (B) Hydraulic gradient line (C) Pressure line (D) Pressure head lineShow All Answers
