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MCQs

Total Questions : 135 | Page 10 of 14 pages
Question 91. What is the nominal spacing between the plates?
  1.    1 inch
  2.    2 inch
  3.    3 inch
  4.    4 inch
 Discuss Question
Answer: Option B. -> 2 inch
Answer: (b).2 inch
Question 92. Tube settlers are operated in which mode?
  1.    Concurrent
  2.    Countercurrent
  3.    Cross flow
  4.    Hindered settling
 Discuss Question
Answer: Option B. -> Countercurrent
Answer: (b).Countercurrent
Question 93. What is the mathematical representation when many plates are used?
  1.    V=Q/Nwb
  2.    V= Q x Nwb
  3.    V= Q/Nw
  4.    V=Q x Nw
 Discuss Question
Answer: Option A. -> V=Q/Nwb
Answer: (a).V=Q/Nwb
Question 94. Calculate the area of the tube settlers for the given data:
Flow: 1500 mm³/h
Surface loading rate: 7 m²/m³/h
  1.    215 m²
  2.    300 m²
  3.    400 m²
  4.    500 m²
 Discuss Question
Answer: Option A. -> 215 m²
Answer: (a).215 m²
Question 95. Which of these represent the settling velocity of tubesettlers?
  1.    11-15 m²/mm²
  2.    20-25 m²/mm²
  3.    40-45 m²/mm²
  4.    30-35 m²/mm²
 Discuss Question
Answer: Option A. -> 11-15 m²/mm²
Answer: (a).11-15 m²/mm²
Question 96. What is the bulk density of pebbles assumed while designing a Pressure sand filter?
  1.    1650 kg/m³
  2.    1600 kg/m³
  3.    650 kg/m³
  4.    550 kg/m³
 Discuss Question
Answer: Option B. -> 1600 kg/m³
Answer: (b).1600 kg/m³
Question 97. What is the bulk density of sand assumed while designing the amount required for a sand filter?
  1.    1750 Kg/m³
  2.    1300 Kg/m³
  3.    1000 Kg/m³
  4.    790 Kg/m³
 Discuss Question
Answer: Option A. -> 1750 Kg/m³
Answer: (a).1750 Kg/m³
Question 98. Who used the trickling filter for the first time?
  1.    Didden
  2.    Streeter
  3.    Thomas
  4.    Newton
 Discuss Question
Answer: Option A. -> Didden
Answer: (a).Didden
Question 99. Calculate the amount of pebbles required for the following data.
Flow: 200 m³/h
Velocity of dual media filter: 15m/h
Height: 0.6 m
  1.    12668 Kg
  2.    13792 Kg
  3.    35000 Kg
  4.    15792 Kg
 Discuss Question
Answer: Option A. -> 12668 Kg
Answer: (a).12668 Kg
Question 100. Calculate the amount of sand required for the following data.
Flow: 200 m³/h
Velocity of dual media filter: 15m/h
Height: 0.4 m
  1.    12668 Kg
  2.    9237 Kg
  3.    1020 Kg
  4.    12752 Kg
 Discuss Question
Answer: Option B. -> 9237 Kg
Answer: (b).9237 Kg

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