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MCQs

Total Questions : 135 | Page 7 of 14 pages
Question 61. What is the filter media made of?
  1.    Cotton
  2.    Synthetic fibre
  3.    Geotextiles
  4.    Plastic
 Discuss Question
Answer: Option B. -> Synthetic fibre
Answer: (b).Synthetic fibre
Question 62. ________ is shifted to keep an ample space for filtering media to rotate.
  1.    Drain
  2.    Movable plate
  3.    Perforated plate
  4.    Cylinder
 Discuss Question
Answer: Option B. -> Movable plate
Answer: (b).Movable plate
Question 63. The synthetic fibres used are temperature resistant.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 64. Filter cycle is interrupted for ______
  1.    Air washing
  2.    Back washing
  3.    Adding influent
  4.    Removing effluent
 Discuss Question
Answer: Option A. -> Air washing
Answer: (a).Air washing
Question 65. What is the void ratio of filter media?
  1.    60-65 %
  2.    65-70 %
  3.    75-80 %
  4.    80-85 %
 Discuss Question
Answer: Option D. -> 80-85 %
Answer: (d).80-85 %
Question 66. Calculate the volume of the flocculation zone for a clariflocculator for the following data.
Flow: 500 m³/h.
  1.    250 m³
  2.    325 m³
  3.    425 m³
  4.    525 m³
 Discuss Question
Answer: Option A. -> 250 m³
Answer: (a).250 m³
Question 67. Calculate the flocculation volume for an HRSCC for the following data.
Flow: 300 m³/h.
  1.    40 m³
  2.    90 m³
  3.    75 m³
  4.    100 m³
 Discuss Question
Answer: Option C. -> 75 m³
Answer: (c).75 m³
Question 68. Calculate the surface area of the flocculation zone for the following data.
Flow: 300 m³/h.
Rise rate :1.2 m/h
  1.    240 m²
  2.    250 m²
  3.    350 m²
  4.    160 m²
 Discuss Question
Answer: Option B. -> 250 m²
Answer: (b).250 m²
Question 69. Calculate the diameter of the flocculation zone for the following data:
Flow: 200 m³/h.
Height considered (SWD):3.5 m
  1.    6.1 m
  2.    9.8 m
  3.    10.8 m
  4.    10.7 m
 Discuss Question
Answer: Option A. -> 6.1 m
Answer: (a).6.1 m
Question 70. Which of these require a flash mixer and flocculation prior to it?
  1.    High rate solid contact clarifier
  2.    Clariflocculator
  3.    Secondary clarifier
  4.    Dissolved aeration flotation
 Discuss Question
Answer: Option C. -> Secondary clarifier
Answer: (c).Secondary clarifier

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