NRI INSTITUTEOF TECHNOLOGY-KOTHUR(V)-R.R. DIST
IMPORTANT QUESTIONS-UNIT WISE
SUB
BRANCH
: ENVIRONMENTAL ENGINEERIMG
: 3-2-CIVIL
UNIT-1
1. What is Design period? Explain the factors to be considered while fixing the design period of designing water
supply scheme.(Ans: Pg no 65-EE-Text book given in Book Bank)
2. Define percapita demand & Explain the various types of water demand of a city or town. (Ans: Pg no 61-64-EEText book given in Book Bank)
3. a)Discuss the various factors affecting percapita demand of a town .(Ans: Pg no 75-EE-TB given in BB)
b)What do you understand by the term fluctuation in water demand. (Ans: Pg no 73-EE-TB given in BB)
4. Explain the various methods of forecasting the future population of a town or city. Comment on their relative
merits. .(Ans: Pg no 65-69-EE-TB given in BB)
5. Explain water quality testing and analysis. .(Ans: Pg no-128-138-EE-TB given in BB)
6. give the drinking water quality standards w.r.t. physical, chemical & biological parameters. .(Ans: Pg no 138-EETB given in BB)
7. Explain the causes & effects of water borne diseases. .(Ans: Pg no 104-105-EE-TB –S.Chand publications)
UNIT-2
1.
Discuss the suitability of water sources( both ground & surface waters) with regard to quality quantity.
(Ans: Pg no 250-252-EE-TB given in BB)
2 What is an intake? Give the criteria for the selecting a site for intake works also explain the factors affecting the
design of an intake structure. (Ans: Pg no 93-EE-TB given in BB)
3. Explain any three types of intakes with a neat sketch. (Ans: Pg no 94-EE-TB given in BB)
4. Write short notes on :
a) Infiltration galleries b) Confined and unconfined Aquifers (Ans: Pg no -39 & 36-rlyEE-TB given in BB)
5. What is a distribution system? Give the requirements of a good distribution system.
(Ans: Pg no 224-EE-TB given in BB)
6. Explain the types and layouts of a distribution system. (Ans: Pg no 224-226-EE-TB given in BB)
UNIT-3
1. Describe the layout and general outline of water treatment units. (Ans: Pg no -146-EE-TB given in BB)
2. Define sedimentation? Explain the principle of sedimentation of a discrete particle in a continuous flow settling tank &
derive an expression for the uniform velocity of discrete particle. (Ans: Pg no 149-150-EE-TB given in BB)
3. Explain the design aspects of continuous flow sedimentation tanks. (Ans: Pg no 155-EE-TB given in BB)
4.Write short notes on: a) Sedimentation b) Coagulation c)Flocculation d) Clarification.
5. a) What are the various chemical coagulants that are commonly used in coagulation process
b) Write a note on handling and storing of coagulants. (Ans: Pg no 161-162-EE-TB given in BB)
6. On what factors does the dosage of a coagulant depends? Explain the experimental determination of optimum dosage of
a coagulant using Jar test. (Ans: Pg no 163-EE-TB given in BB)
7. Explain Coagulants and its feeding devices. (Ans: Pg no 165-EE-TB given in BB)
UNIT-4
1. Explain the theory of filtration & give the expected properties of a sand to be used as a filter.
(Ans: Pg no 175-176-EE-TB given in BB)
2. Compare slow sand and rapid gravity filters. (Ans: Pg no 184-185-EE-TB given in BB)
3. Explain the construction of slow sand and rapid gravity filters. (Ans: Pg no 177-183-EE-TB given in BB)
4. What do you understand by the term disinfection of water? Give the requirements of a good disinfectant.
(Ans: Pg no 250-252-EE-TB given in BB)
5. Why chlorine is widely used as a disinfectant in water treatment? Explain the theory of chlorination.
(Ans: Pg no 190-EE-TB given in BB)
6. Write short notes on: a) Chlorine demand & b) Break point chlorination. (Ans: Pg no 192-193-EE-TB given in BB)
7. Explain the various methods employed for disinfection of water. (Ans: Pg no 188-190-EE-TB given in BB)
UNIT-5
1. What is Distribution system? Explain the different types & layouts of a D.S. (Ans: Pg no 224-226-EE-TB given in BB)
2. Explain the design of a D.S. keeping in view the following parameters.
a) Layout
b) Pipe lines
c) Permissible velocities
d) Average daily water demand
(Ans: Pg no 250-252-EE-TB given in BB)
3. Explain the analysis of flow in pipes in D.S. by
a)Hardy –Cross method (Ans: Pg no 255-EE-TB given in BB)
b) Equivalent pipe method. (Ans: Pg no 262-EE-TB given in BB)
4. Write a note on the functions and storage capacity of a service reservoir. (Ans: Pg no 230-231-EE-TB given in BB)
5. What is a pipe joint. Explain the various types of commonly used pipe joints. (Ans: Pg no 105-109-EE-TB given in BB)
6. Write a note on laying and testing of pipe lines. (Ans: Pg no 109-112-EE-TB given in BB)
UNIT-7
1. Explain with a neat sketch points to be considered during the layout of a typical sewage treatment.
(Ans: Pg no 435-EE-TB given in BB)
2. Define sedimentation and give the various design considerations of grit chambers.
(Ans: Pg no -442-447-EE-TB given in BB)
3. a)With a neat sketch explain trickling filters .
b) Compare low rate and high rate trickling filters. (Ans: Pg no 461 & 473-EE-TB given in BB)
4. Explain the various processes employed for primary treatment of sewage.
(Ans: U need to write what is primary treatment, screens & its types, grit chambers & its designs, skimming
tanks. i.e. you need to give a brief explanation about all processes employed in primary treatment)
5. Write short notes on:
(a) Screens & its types
(b) Grit chambers & its design considerations
(c) Tricking Filters ( High & low rate)
(d) Skimming tanks and its waste disposal
.