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MCQs

Total Questions : 50 | Page 4 of 5 pages
Question 31. What is the size of the openings for a microscreen?
  1.    35-50µm
  2.    10-35µm
  3.    50-60µm
  4.    60-6µm
 Discuss Question
Answer: Option B. -> 10-35µm
Answer: (b).10-35µm
Question 32. What is the removal efficiency of TSS in case of microscreens?
  1.    80-85%
  2.    85-90%
  3.    <10%
  4.    10-80%
 Discuss Question
Answer: Option D. -> 10-80%
Answer: (d).10-80%
Question 33. What is the hydraulic loading rate for a microscreen?
  1.    1-3 m³/m².min
  2.    7-9 m³/m².min
  3.    3-6 m³/m².min
  4.    10-12 m³/m².min
 Discuss Question
Answer: Option C. -> 3-6 m³/m².min
Answer: (c).3-6 m³/m².min
Question 34. What is the typical headloss through the microscreens?
  1.    150-200mm
  2.    75-150mm
  3.    <75mm
  4.    >200mm
 Discuss Question
Answer: Option B. -> 75-150mm
Answer: (b).75-150mm
Question 35. Comminutors are usually installed in which size of water treatment plants?
  1.    0.2 m³/sec
  2.    <0.2 m³/sec
  3.    0.5 m³/sec
  4.    1 m³/sec
 Discuss Question
Answer: Option B. -> <0.2 m³/sec
Answer: (b).<0.2 m³/sec
Question 36. Which of these type of screen can be used both as a fine and coarse screen?
  1.    Continuous belt
  2.    Catenary
  3.    Reciprocating
  4.    Chain driven
 Discuss Question
Answer: Option A. -> Continuous belt
Answer: (a).Continuous belt
Question 37. What should be installed in order to control the velocity of the bar screens?
  1.    Sluice gate
  2.    Grit chamber
  3.    Parshall flume
  4.    Hoppers
 Discuss Question
Answer: Option C. -> Parshall flume
Answer: (c).Parshall flume
Question 38. What is the maximum allowable approach velocity for a bar screen at peak flow rates?
  1.    >0.9 m/s
  2.    <0.9 m/s
  3.    1-2 m/s
  4.    2.5 m/s
 Discuss Question
Answer: Option B. -> <0.9 m/s
Answer: (b).<0.9 m/s
Question 39. With respect to the operation which of these screens is the most expensive?
  1.    Chain driven
  2.    Continuous belt
  3.    Catenary
  4.    Reciprocating
 Discuss Question
Answer: Option B. -> Continuous belt
Answer: (b).Continuous belt
Question 40. Which of these screens have a very large footprint?
  1.    Reciprocating
  2.    Continuous belt
  3.    Catenary
  4.    Chain driven
 Discuss Question
Answer: Option C. -> Catenary
Answer: (c).Catenary

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