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MCQs

Total Questions : 50 | Page 3 of 5 pages
Question 21. How many types of screens are present?
  1.    3
  2.    4
  3.    2
  4.    5
 Discuss Question
Answer: Option C. -> 2
Answer: (c).2
Question 22. __________ wastewater treatment plant may or may not need the screens.
  1.    Domestic
  2.    Industrial
  3.    Sewage
  4.    Chemical
 Discuss Question
Answer: Option B. -> Industrial
Answer: (b).Industrial
Question 23. Lower the velocity through the screen, the ________ is the amount of screening that would be removed.
  1.    Lower
  2.    Greater
  3.    Lesser
  4.    Stronger
 Discuss Question
Answer: Option B. -> Greater
Answer: (b).Greater
Question 24. What is the approach velocity for grit bearing wastewaters?
  1.    0.2-0.3 m/s
  2.    0.6-0.75 m/s
  3.    0.5-0.75 m/s
  4.    0.45-0.60 m/s
 Discuss Question
Answer: Option B. -> 0.6-0.75 m/s
Answer: (b).0.6-0.75 m/s
Question 25. Which of the following does the quantity of screening does not depend on?
  1.    Type of rack
  2.    Type of screen
  3.    Type of sewer system
  4.    Temperature
 Discuss Question
Answer: Option D. -> Temperature
Answer: (d).Temperature
Question 26. The head lost by water flowing in a channel as a result of turbulence caused by the velocity of the flowing water is called ________
  1.    Putrefaction
  2.    Buffer
  3.    Head
  4.    Head loss
 Discuss Question
Answer: Option D. -> Head loss
Answer: (d).Head loss
Question 27. What is the maximum allowable head loss for a manual coarse screen?
  1.    150mm
  2.    300 mm
  3.    200 mm
  4.    100mm
 Discuss Question
Answer: Option A. -> 150mm
Answer: (a).150mm
Question 28. At what angle generally a coarse manual screen is placed?
  1.    60 degree
  2.    50 degree
  3.    65-70 degree
  4.    30-45 degree
 Discuss Question
Answer: Option D. -> 30-45 degree
Answer: (d).30-45 degree
Question 29. Which of these screens can handle very large particles?
  1.    Reciprocating rake
  2.    Continuous belt
  3.    Front clean/Front return
  4.    Front clean/back return
 Discuss Question
Answer: Option A. -> Reciprocating rake
Answer: (a).Reciprocating rake
Question 30. From which of these type of screens there is a possibility of odour emission?
  1.    Catenary
  2.    Reciprocating rake
  3.    Continuous belt
  4.    Chain driven screen
 Discuss Question
Answer: Option A. -> Catenary
Answer: (a).Catenary

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