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MCQs

Total Questions : 828 | Page 79 of 83 pages
Question 781. The hydraulic mean depth (HMD. for an egg-shaped sewer flowing two-third full is_______________?
  1.    equal to HMD when flowing full
  2.    less than HMD when flowing full
  3.    greater than HMD when flowing full
  4.    none of the above
 Discuss Question
Answer: Option C. -> greater than HMD when flowing full
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 782. Which of the following methods of analysis of water distribution system is most suitable for long and narrow pipe system ?
  1.    circle method
  2.    equivalent pipe method
  3.    Hardy cross method
  4.    electrical analysis method
 Discuss Question
Answer: Option B. -> equivalent pipe method
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 783. Hardy cross method of analysis of distribution system________________?
1) involves successive trials
2) takes economic aspects into account
3) is time consuming
The correct answer is?
  1.    only (1)
  2.    (1)and(2)
  3.    (1) and (3)
  4.    all are correct
 Discuss Question
Answer: Option C. -> (1) and (3)
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 784. A sewer that receives the discharge of a number of house sewers is called________________?
  1.    house sewer
  2.    lateral sewer
  3.    intercepting sewer
  4.    submain sewer
 Discuss Question
Answer: Option B. -> lateral sewer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 785. The type of valve which allows water to flow in one direction but prevents its flow in the reverse direction is____________________?
  1.    reflux valve
  2.    sluice valve
  3.    air relief valve
  4.    pressure relief valve
 Discuss Question
Answer: Option A. -> reflux valve
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 786. The layout of distribution system in which water flows towards the outer periphery is_________________?
  1.    ring system
  2.    dead end system
  3.    radial system
  4.    grid iron system
 Discuss Question
Answer: Option C. -> radial system
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 787. Which of the following chemical compounds can be used for dechlorination of water ?
  1.    carbon dioxide
  2.    bleaching powder
  3.    sulphur dioxide
  4.    chloramines
 Discuss Question
Answer: Option C. -> sulphur dioxide
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 788. In lime-soda process________________?
  1.    only carbonate hardness is removed
  2.    only non-carbonate hardness is re-moved
  3.    lime reduces the carbonate hardness and soda-ash removes the non-carbo¬nate hardness
  4.    lime reduces the non-carbonate hard-ness and soda-ash removes the carbo¬nate hardness
 Discuss Question
Answer: Option C. -> lime reduces the carbonate hardness and soda-ash removes the non-carbo¬nate hardness
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 789. As compared to cast iron pipes, steel pipes are______________?
  1.    heavier
  2.    stronger
  3.    costlier
  4.    less susceptible to corrosion
 Discuss Question
Answer: Option B. -> stronger
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 790. As compared to higher pH values, the contact period required for efficient chlorination at lower pH values is___________________?
  1.    smaller
  2.    larger
  3.    same
  4.    none of the above
 Discuss Question
Answer: Option A. -> smaller
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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