NRI INSTITUTEOF TECHNOLOGY-KOTHUR(V)-R.R. DIST IMPORTANT QUESTIONS-UNIT WISE

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NRI INSTITUTEOF TECHNOLOGY
-
KOTHUR(V)
-
R.R. DIST

IMPORTANT QUESTIONS
-
UNIT WISE


SUB

:

ENVIRONMENTAL
ENGINEERIMG

BRANCH :

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 6
1
-
64
-
EE
-
Text 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
-
EE
-
TB 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 i
ntakes 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 t
reatment 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 d
iscrete 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 filte
rs. (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 treatmen
t? 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.
Exp
lain 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






.