Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2017-2018 NCE 503 Environmental Engineering 1 Question Paper
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B TECH (CARRY OVER)
(SEM V ) THEORY EXAMINATION 2017-18
(Environmental Engineering 1)
Time: 3 Hours Total Marks: 100
Note: 1. Attempt all Sections. If any missing data is required, then choose suitably.
SECTION-A
1.Attempt all questions in brief. 2 X 10:20
a. De?ne design period ?
b. What is the domestic water demand?
0. De?ne the pipe maten'als.
(1. Which type of pump is, commonly used hand pump?
6. Give the name of different types of sewers.
f. De?ne small bore sewer system ?
g. Define lapse rate '?
h. What is acid rain ?
i. What is the function of sluice gate ?
j. What do you understand by storm regulator?
SECTION-B
2. Attempt ant three of the following: 10 X 3:30
a. What are various method of forecast the population growth in an area? Explain suitability of any
four methods.
b. Differentiate between design of sewer pipes and water supply pipes.A city has population of
1,00,000 with a water supply rate of 1701pcd.Assuming 80% of water reaches the sewer, What will
be the DWF in (m3/s)
0. Discuss the various methods for laying a water distribution network. Compare the advantages and
disadvantages of continious and intermittant system of water supply scheme.
d. Explain the following sewer apppurtenances:-
(i) Manhole (ii) lamp hole (iii) inlet basin
e. (i)A stone ware sewer 30 CM diameter is laid at a gradient 1 in 100. Using N=0.013 in Mannings
co-efficent. Calculate the velocity and discharge where sewer is running half full.
(ii) Explain effects of air pollution in details.
SECTION-C
3. Attempt any one part of the following: 10 X 1:10
a. What are infilatration galleries and infiltration wells. Explain with neat sketches.
b. Population of a town as obtained from the census report is as follows:-
YEAR 1971 1981 1991 2001
POPULATION 242 345 770 1090
(IN THOUSAND)
Estimate the population of the town in the year 2015 & 2021
(i) Arithmetic increase method
(ii) Geometric increase method
(iii) Incremental increase method
4. Attempt any two part of the following 5x2 :10
a. Explain various types ofjoint used in water supply system.
b. A distribution resrervoir is to be designed for a locality ofa town for 1200 persons. The average
supply may be assumed 250 LPCD. The pattern of demand is as follows :
7 AM to 8AM ------------ 30% of day supply
8 AM to 5AM ------------ 35% of day supply
5 AM to 6.30AM ----------- 30% of day supply
6.30AM to 7AM -------------- 5% of day supply
The pumping is to be done at a constant rate of 8 hours per day (8.0AM to 4PM). Detennine
the capacity of reservoir.
c. Explain Water Hammer and its control measures.
5. Attempt any one part of the following 10 X 1 =10
(a) Write short notes on various methods used for analysis of complex pipe net works.
Explain the Hardy cross method in detail.
(b) Discuss the importance of plumbing system in buildings.With the help of a neat
digram , explain how municipal water mains are connected to pn'vate buildings
and houses for giving water supply connections.
6. Attempt any one part of the following 10 X 1 =10
(3) Define the self- cleansing velocity in sewersDerive an equation for self cleansing velocity
generated in sewers
(b)Write short notes of following:
(i) Global warming (ii) various plume behaviour
7. Attempt any two part of the following 5 X 2 =10
(a) Explain Newton Raphson method and equivalent pipe method of pipe network analysis.
(b) What is percapita supply? Discuss the basic needs and factors affecting the consumption
of water in a city.
((2) Briefly explain layout and construction of sewer lines.
This post was last modified on 29 January 2020