Water Supply and Waste Water Engineering, Question Paper of Civil Engineering 4th Semester, Download Question Paper 6

Roll No­­­­­­­­­_________

WATER SUPPLY AND WASTE WATER ENGINEERING

4^th Exam /Civil/5108/

                                                             

Duration 3 Hrs.

1.     Fill in the blanks

a.     Copper sulphate treatment is done to destroy _____ from water.

b.     MPN is related with bacterial _______

c.      Qdour  test may be carried by an instrument called ______

d.     Turbidity is imported by the ____ matter present in water

e.      The purpose of sedimentation is to remove the ________ impurities.

f.       In galvanizing process ________ coating is applied to the metal.

g.     Method of water distribution depends upon the ________ of the metal.

h.     Method of water distribution depends upon the _______ of the area.

i.       Population control board in India was created in the year _______

j.       Normal does of aluminum sulphate as  coagulant is ______ mg/litre

k.     From septic tank the effluents are discharged into _______

Section –B

Note : Attempt any five questions

2.       

a.     Ground water sources and sub surface sources.

b.     Porous pipe galleries and infiltration galleries.

c.      River intakes and canal intakes.

d.     Suspended impurities and dissolved impurities.

e.      Combined system and separate system of sewerage

f.       Earth privy and pit privy.

g.     Cleaning of sewers and flushing of sewers.

Section-C

Note : Attempt  any four questions

3.     Name various methods of forecasting population with formulae and explain any one.

4.     What are the factors on which source of water supply depends? Explain any one.

5.     What is sedimentation? Give advantages of plain sedimentation.

6.     Define break point chlorination and give its advantages.]

7.     Describe break  the advantages and disadvantages of plastic pipes.

8.     What are the purpose of sewer ventilation? Describe the method of sewer ventilation.

9.     Enlist various factors helping self-purification of stream. Define dilution factor.

Section –D

Note : Attempt any three questions

10.                         

a.     Enlist different types of pipe joints. Describe with neat sketches spigot and socket joint and flagged joint.

b.     Mention the various sewer appurtenances also state the location and utility of each.

c.      What are different privies used of disposal of human excreta in rural area? Explain any three commonly used.

d.     What is water meter? Give requirements of good water mete. Enlist various types of water meter and explain any  one with neat sketch.

e.      Explain sewage sickness. Describe briefly any three tests for home drainage.

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Water Supply and Waste Water Engineering, Question Paper of Civil Engineering 4th Semester, Download Question Paper 5

Roll No­­­­­­­­­_________

WATER SUPPLY AND WASTE WATER ENGINEERING

4^th Exam /Civil/4451/May’10

                                                             

Duration 3 Hrs.

1.     Fill in the blanks

a.     The field of a well depends mainly upon ______

b.     The cleaning of slow sand fitter is done by ______

c.      AGI pipe has a coating of _______

d.     Chlorination of water is done for _______

e.      Water supply scheme is usually designed for a period of ______

f.       pH value of fresh sewage is expected to be _______

g.     the minimum diameter of server pipe is _______

h.     the gas that is mainly responsible for explosion in sewer is ______

i.       The septic tank should be cleared at regular interval but should not exceed ________

j.       Traps are used in household drainage system to _____

State true or false

k.     Sewage consists of water only and solid matter is hardly present.

l.       The colour of water is measured on well scale.

m.  The aim of disinfection is to kill all the microorganism in water.

n.     Water meter is used to measure the quantity of sewage

o.     Trickling fitters remove  organic matter.

Section –B

Not e: Attempt any ten questions

2.       

a.     List out the factors affecting per capita demand.

b.     Explain about quality and quantity of surface water.

c.      Give the chemical standards of water used for domestic purpose

d.     Explain the functions of sedimentation.

e.      Explain advantages and disadvantages of concrete pipe.

f.       Explain lowering of pipe i.e. water supply pipe into the trench

g.     List out the various fixture used in internal water supply

h.     Explain self cleaning velocity.

i.       Explain advantages and disadvantages of combined system.

j.       Explain sewage sickness.

k.     Explain advantages of tricking fitters.

l.        Explain the aims of building drainage.

Section – C

Note : Attempt any three question

3.       

a.     Explain arithmetic increase method with example

b.     Explain infiltration wells with neat sketch.

4.      

a.     Compare slow sand filter and rapid sand fitter

b.      Explain briefly grid iron distribution system.

5.       

a.     Explain the factors affecting dry weather flow.

b.     Explain manholes, it subjects and location .

6.       

a.     Explain disposal sewage by land treatment

b.     Explain the points should be kept  in mind for house drainage

c.      Explain objectives of screens

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

Roll No­­­­­­­­­_________

WATER SUPPLY AND WASTE WATER ENGINEERING

4^th Exam /Civil/4451/May’09

                                                             

Duration 3 Hrs.

1.     Fill in the blanks

a.     The demand of water will be ______ if the population increases.

b.     Coagulation is needed when the size of the  particle is ______

c.      Slow and fillers requires _______ area

d.     Minimum cover for a water supply pipe line should be ______

e.      Units of turbidly are ______

f.       BOD is measure to find out the _______ of sewage

g.     Screens are usually laid at an angle of ______

h.     The pipe installed for ventilation purposes is called ________

i.       European style water closet is also  called ______

j.       The sedimentation tanks located just after the grit chamber are called _______ clarifiers.

State true or false

k.      Contaminated water is used for drinking purpose.

l.       The physical impurities give taste , odour, colour and libidlity.

m.  G.I pipers are used for service connections

n.     Anaerobic bacteria exist  in the  absence of oxygen.

o.     The leakage of sewage from the sewer into the soil is called infiltration.

Section –B

Note : Attempt any ten questions

2.       

a.     What do you mean by pet capita demand?

b.     How the bedding for a pipe line should be made?

c.      What do you mean by limiting velocity.

d.     Define back falling.

e.      Define chlorination and chorine demand.

f.       What are various joint sin pipes? Explain

g.     Draw a plan of a building and show on it the line diagram indicating water supply connections.

h.     What is the difference between sewage and sullage.

i.       What do you mean by handling of sewers.

j.       Differentiate between separate and combined sewerage system.

k.     Differentiate between conservancy and carriage system.

l.       What do you mean by gully trap and why it is provided?

Section-C

Note : Attempt any three questions

3.       

a.     What are the advantages and disadvantages of intermittent system of water supply.

b.     Explain various water supply distribution methods.

4.     Describe the construction, working principle and operation of rapid sand filter.

5.     What is bulling drainage? Write in detail the requirement of an efficient building drainage

6.     What are various sewer appurtenances used in a sewerage system and state the location.

    

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

Roll No­­­­­­­­­_________

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

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Water Supply and Waste Water Engineering, Question Paper of Civil Engineering 4th Semester, Download Question Paper 2

Roll No­­­­­­­­­_________

WATER SUPPLY AND WASTE WATER ENGINEERING

4^th Exam /Civil/5108/May’08

                                                             

Duration 3 Hrs.

1.     Fill in the blanks.

a.     In India water consumption per capita per day is ______ liters for domestic use

b.     Sub surface water is free from____

c.      Alum is used for _________

d.     Turbidity is due to ________ impurities.

e.      GI pipes are used for ______

f.       Sewerage is _______ waste of the community.

g.     Dry weather flow is also called ________

h.     Masonry sewers are  used for ______ sizes.

i.       In India, generally _________ sewerage system is used.

j.       The pope installed for ventilation purpose is called _______

State true or false.

k.     The privy pit should not be closed with sullage  

l.       Night soil means human excretes.

m.  Aerobic bacteria exist in the presence of light.

n.     The treatment , which works on the Principe of biological , is called primary treatment.

o.     Bonding rod is used for checking the gradient of sewer

Note : attempt any ten questions

2.              

a.     What do you mean by per capita demand?

b.     What is breakpoint chlorinates?

c.      When water  said to be potable?

d.     Differentiate between domestic sewage and industrial sewage

e.      Explain D.W.F

f.       Differentiate between infiltrates and galleries

g.     Write importance of B.O.D

h.     What is the difference between sulage and sewage ?

i.       What do you mean by gully trap and why it is provided?

j.       What is back filling?

k.     Why cesspool is preferred?

l.       What is the importance testing a sewer?

Note : Attempt any three questions

3.     Define the various types of impurities in water and discuss their effects.

4.     What do you mean continuous and intermittent supply system of water? Compare both the systems with respect to their merits and demerits

5.     Differentiate between a separate system and a combined system of sewage along with their advantages and disadvantages.

6.     Explain activated sludge by drawing a flow diagram along with merits and demerits of the system.  

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Water Supply and Waste Water Engineering, Question Paper of Civil Engineering 4th Semester, Download Question Paper 1

Roll No­­­­­­­­­_________

WATER SUPPLY AND WASTE WATER ENGINEERING

4^th Exam /Civil/5165/Dec 07

                                                             

Duration 3 Hrs.

Section –A

1.     Choose the correct one

a.     Any trap is intended to trap

                                                             i.      Water

                                                           ii.      Sewage of sullage

                                                        iii.      Any liquid waste

                                                        iv.      Foul gases

b.     Disinfection is the process of

                                                             i.      Killing all bacteria

                                                           ii.      Killing only pathogenic bacteria

                                                        iii.      Removal of causative organism for disease

                                                        iv.      Complete destruction of life

c.      A water born disease is

                                                             i.      Malaria

                                                           ii.      Cancer

                                                        iii.      Dysentery

                                                        iv.      Encephalitis

d.     A sewer that collects sewage from toilet is called.

                                                             i.      Lateral

                                                           ii.      Branch sewar

                                                        iii.      Main sewar

                                                        iv.      Outfall sewar

e.      The pipe in building through which human excreta flows is called.

                                                             i.      Soil pipe

                                                           ii.      Waste pipe

                                                        iii.      Vent pipe

                                                        iv.      None of these

State true or false:

a.     P _H value of drinking water should be more than 8,

b.     Kitchen waste is sullage.

c.      Slow sand filters require less area

d.     BOD of safe drinking water must be nil.

Masonry sewers are used for small sizes.

          Fill in the blanks:

a.     The process of supporting the sides of trenches by wooden members is the termed as ______

b.     Alum is used for ______

c.      Units of turbidity are ______

d.     A sewer, which receives storm water, surface run- off and sewage , is called ______ sewer.

e.      Sluice valve is provided to ________ the flow of water through the pipe.

Section-B

Note : Attempt any ten questions

a.     What do you mean by the term per capita demand?

b.     What do you mean by MPN?

c.      What is break point chlorination  ?

d.     Differentiate between arithmetic and geometrical methods of for casting the population.

e.      What is the purpose of filtration?

f.       When water is said to be potable?

g.     Differentiate between DWF and Storm sewage

h.     Define the separate system of sewerage

i.       What is the self cleansing velocity?

j.       Define aerobic conditions.

k.     What is antisyphonage pipe?

Section-C

Note : Attempt any three questions

2.     Explain the different methods of sewage disposal

3.     Explain in brief the ring system of water distribution

4.     Define the various types of impurities in water and discuss their effects

5.     Explain the steps involved in activated sludge proceses.    

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