Water Supply and Waste Water Engineering, Question Paper of Civil Engineering 4th Semester, Download Question Paper 3

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WATER SUPPLY AND WASTE WATER ENGINEERING

4^th Exam /Civil/5165/May’08

                                                             

Duration 3 Hrs.

1.     Choose the correct one

a.     The valve provided at all dead ends in the distribution system & at all depressions is

                                                             i.      Safety valve

                                                           ii.      Sluice valve

                                                        iii.      Scour valve

                                                        iv.      Float valve

b.     The pH value of neutral water is

                                                             i.      5.0

                                                           ii.      6.0

                                                        iii.      7.0

                                                        iv.      8.0

c.      The pipe through the water main to building is

                                                             i.      Water service pipe

                                                           ii.      Soil pipe

                                                        iii.      Waste pipe

                                                        iv.      Vent pipe

d.     Which of the followings is an hydraulic element of a sewer

                                                             i.      Dameter

                                                           ii.      velocity

                                                        iii.      slope

                                                        iv.      all of the above

state true or false.

a.     Pipe which carries sewage is called sewer.

b.     Anaerobic bacteria act in the presence of oxygen

c.      Recirculation is canaries out in trickling filter.

d.     Maximum daily demand is less than average daily demand

e.      Algae produces colour and odour in water

Fill in the blanks

a.     The unit of hardness is _____

b.     Pipe used in building is _______ pipe.

c.      Sedimentation removes _______

d.     Oxidation is the addition of oxygen or removal of _______   

e.      BOD stands for _______

Section –B

Note : Attempt any ten questions

2.      

a.     What is conservancy system of sanitation ?

b.     What are maximum and minimum velocities of sewers?

c.      Give the locations  & functions of a manhole

d.      Explain a collar joint.

e.      What is a seal? How it gets broken?

f.       Explain self purification of stream.

g.     Write per capita consumption of various demands of water as per BIS standards.

h.     What are sub surface water sources.

i.       What is standards plate count test?

j.       How pipe lines are tested?

k.     What are water supply fixtures ?

l.       Explain hardness of water

Section-C

Note : Attempt any three questions.

3.     Define coagulation. Explain different types of coagulates used

4.     Explain different methods of layout of distribution pipes

5.     Explain the construction and working o tricking filter.

6.     Explain the methods of sludge digestion and sludge disposal