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MCQs

Total Questions : 135 | Page 8 of 14 pages
Question 71. Which of these require a flash mixer prior to it?
  1.    High rate solid contact clarifier
  2.    Clariflocculator
  3.    Secondary clarifier
  4.    Dissolved aeration flotation
 Discuss Question
Answer: Option B. -> Clariflocculator
Answer: (b).Clariflocculator
Question 72. Which of these is the most efficient?
  1.    High rate solid contact clarifier
  2.    Primary clarifier
  3.    Clariflocculator
  4.    Tube settler
 Discuss Question
Answer: Option A. -> High rate solid contact clarifier
Answer: (a).High rate solid contact clarifier
Question 73. While designing a clariflocculator what is the maximum limit velocity that is assumed?
  1.    1.5 m/h
  2.    2.0 m/h
  3.    3 m/h
  4.    3.5 m/h
 Discuss Question
Answer: Option B. -> 2.0 m/h
Answer: (b).2.0 m/h
Question 74. While designing a clarifier what is the maximum limit velocity that is assumed?
  1.    1.5 m/h
  2.    2.5 m/h
  3.    3 m/h
  4.    3.5 m/h
 Discuss Question
Answer: Option A. -> 1.5 m/h
Answer: (a).1.5 m/h
Question 75. Which of these don’t require a flash mixer and a flocculator prior to it?
  1.    High rate solid contact clarifier
  2.    Clariflocculator
  3.    Secondary clarifier
  4.    Dissolved aeration flotation
 Discuss Question
Answer: Option A. -> High rate solid contact clarifier
Answer: (a).High rate solid contact clarifier
Question 76. While designing a clariflocculator what is the maximum detention time assumed for the flocculation zone?
  1.    40 mins
  2.    60 mins
  3.    90 mins
  4.    120 mins
 Discuss Question
Answer: Option A. -> 40 mins
Answer: (a).40 mins
Question 77. While designing an HRSCC what is the velocity assumed?
  1.    1.5 m/h
  2.    2.5 m/h
  3.    3 m/h
  4.    3.5 m/h
 Discuss Question
Answer: Option C. -> 3 m/h
Answer: (c).3 m/h
Question 78. While designing an HRSCC what is the detention time assumed for the draft tube?
  1.    60 secs
  2.    90 secs
  3.    120 secs
  4.    150 secs
 Discuss Question
Answer: Option A. -> 60 secs
Answer: (a).60 secs
Question 79. While designing an HRSCC what is the detention time assumed for the detention hood?
  1.    60 secs
  2.    90 secs
  3.    120 secs
  4.    150 secs
 Discuss Question
Answer: Option C. -> 120 secs
Answer: (c).120 secs
Question 80. While designing an HRSCC what is the Solid loading rate assumed for the Clarification zone?
  1.    1 m/h
  2.    2 m/h
  3.    0.75 m/h
  4.    0.9 m/h
 Discuss Question
Answer: Option D. -> 0.9 m/h
Answer: (d).0.9 m/h

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