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MCQs

Total Questions : 183 | Page 18 of 19 pages
Question 171. Which sewer appurtenance is used for removing rainwater from the roads?
  1.    Catch basin
  2.    Gullies
  3.    Lamp hole
  4.    Storm regulators
 Discuss Question
Answer: Option B. -> Gullies
Answer: (b).Gullies
Question 172. Which device is used to prevent the clogging of sewer pipes?
  1.    Flushing tank
  2.    Drop manhole
  3.    Lamp hole
  4.    Storm regulators
 Discuss Question
Answer: Option A. -> Flushing tank
Answer: (a).Flushing tank
Question 173. ________ removes oil and grease from the sewage.
  1.    Catch basin
  2.    Gullies
  3.    Grease and oil traps
  4.    Storm regulators
 Discuss Question
Answer: Option C. -> Grease and oil traps
Answer: (c).Grease and oil traps
Question 174. Which of the following is called as depressed sewer?
  1.    Lateral sewer
  2.    Outfall sewer
  3.    Inverted siphon
  4.    Main sewer
 Discuss Question
Answer: Option C. -> Inverted siphon
Answer: (c).Inverted siphon
Question 175. The sewage in inverted siphon will flow under __________
  1.    Air
  2.    Vacuum
  3.    Pressure
  4.    Gravity
 Discuss Question
Answer: Option C. -> Pressure
Answer: (c).Pressure
Question 176. Which of the following device prevents the back flow of wastewater?
  1.    Gate valve
  2.    Check valve
  3.    Union
  4.    Pump lift chain
 Discuss Question
Answer: Option B. -> Check valve
Answer: (b).Check valve
Question 177. Which of the following represents the correct order in terms of the maximum efficiency of the pump?
  1.    Centrifugal > Airlift > Diaphragm
  2.    Diaphragm > Airlift > Centrifugal
  3.    Airlift > Centrifugal > Diaphragm
  4.    Centrifugal > Diaphragm > Airlift
 Discuss Question
Answer: Option D. -> Centrifugal > Diaphragm > Airlift
Answer: (d).Centrifugal > Diaphragm > Airlift
Question 178. Which component of the pumping chamber prevents ground water from entering the septic tank?
  1.    Pump lift chain
  2.    Access riser
  3.    Check valve
  4.    Union
 Discuss Question
Answer: Option B. -> Access riser
Answer: (b).Access riser
Question 179. The design period of main and branch sewer is ___________
  1.    5years
  2.    10years
  3.    30years
  4.    40years
 Discuss Question
Answer: Option C. -> 30years
Answer: (c).30years
Question 180. ________ is the process which indicates the flow of waste water from the sewer into the ground.
  1.    Exfiltration
  2.    Infiltration
  3.    Filtration
  4.    Osmosis
 Discuss Question
Answer: Option A. -> Exfiltration
Answer: (a).Exfiltration

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