I(a) 1. What is the design period adopted while designing the water supply scheme? Explain three factors affecting the rate of demand. 2. Explain in details the operations involved in pressure test in water pipes. 3. Define the term corrosion write any three factor’s which are commonly adopted to minimize the pipe corrosion. I(b) 1. Describe any three methods of forecasting the population 2. Explain the different types of pumps used in the distribution system. II(a) 1. Mention the permissible limits for the following in drinking water as per BIS i) Dissolved oxygen ii) Chlorine iii) Total Solids iv) Iron-Manganese v) Fluorides. 2. Explain the theory of filtration used in the purification of water. 3. Describe the lime soda process for removal of permanent hardness from water. II(b) 1. Design three rapid gravity filters for treating the water at a water works which has to supply the water to a town of population 100000; the percapita demand of the town is 250lit/day. The Rate of filtration of the rapid gravity filters may be taken as 45000 lit/hr/m2. 2. What is meant by chlorination? Explain in details about the various forms of chlorination. III(a) 1. What is fire hydrant? Where it is located. 2. Discuss the merits and demerits of using domestic water meters 3. Briefly explain the periodical maintenance required for water line. III(b) 1. Explain the laying, joining and testing of water mains. 2. Mention the methods adopted to detect the wastage of water in the water supply system - Briefly explain any two methods. IV(a) 1. State any five requirements of sewer materials. 2. Describe the function of grit chamber with neat sketch 3. What are the general principles of house drainage scheme? IV(b) 1. Explain the significance of minimum and maximum velocity of flow in the design of sewer. Write any two hydraulic formulae that are adopted in the design of sewer. 2. With Neat sketch explain how a trickling filter functions and also write the advantages and disadvantages. V(a) 1. Mention any five characteristics of a typical tannery effluent 2. What are the prevent measures taken for the water pollution. 3. Explain 1. Acid Rain 2. Common Wet collection Device V(b) 1. Explain the treatment process of a typical dairy effluent. 2. What are the methods adopted for solid waste disposal. Explain any two of them briefly.
I(a) 1. Mention the importance of Public water supply 2. What is fire demand? Write any three empirical formula to compute the fire demand. 3. Explain with neat sketch a spigot and socket joint. I(b) 1. The following is the census data obtained from a town. Forecast the probable population in the year 2010 and 2020 Year 1970 1980 1990 2000 Population 7500 12000 16000 21000 2. What are intakes? Describe about the river intake with neat sketch. II(a) 1. Name any five important communicable water borne diseases. 2. Briefly explain the theory of sedimentation 3. Compare the advantages and disadvantages of rapid sand filter with a slow sand filter. II(b) 1. Explain the following a. Turbidity test on water. b. Water sampling 2. Explain the construction and operation of a slow sand filter with a neat sketch. III(a) 1. Write short note on reflux valve, sluice valve. 2. What is service reservoir? State the functions. 3. What is intermittent water supply system state the merits and demerits III(b) 1. What are the different types of layouts in distribution system. Explain any two of tem with neat sketch. 2. How is the storage capacity of reservoir determined? Explain in detail. IV(a) 1. Define the term Sewage, Sewerage and sullage. 2. Define ‘BOD’. Mention its importance in the sewage disposal. 3. What is the purpose of sanitation? IV(b) 1. Compare conservancy and water carriage system. 2. Explain activated sludge process with flow diagram V(a) 1. State any five points to prevent the water pollution. 2. Explain: OZONE Depletion 3. Describe any two methods of solid waste disposal V(b) 1. State and explain the causes and effect of water pollution. 2. Explain the treatment process of typical steel plant effluent with help of flow chart.
