NRI INSTITUTEOF TECHNOLOGY
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KOTHUR(V)
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R.R. DIST
IMPORTANT QUESTIONS
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UNIT WISE
SUB
:
ENVIRONMENTAL
ENGINEERIMG
BRANCH :
3
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2
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CIVIL
UNIT
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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
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EE
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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
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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
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TB given in BB)
5.
Explain water quality testing and analysis
.
.(Ans: Pg no
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128
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138
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EE
-
TB given in BB)
6.
give the drinking water quality standards w.r.t. physical, chemical & biological parameters. .(Ans: Pg no
138
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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
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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
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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
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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
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162
-
EE
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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
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EE
-
TB given in BB)
UNIT
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4
1.
Explain the theory of filtration &
give the expected properties of a sand to be used as a filter.
(Ans: Pg no 175
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176
-
EE
-
TB given in BB)
2.
Compare slow sand and rapid gravity filters. (Ans: Pg no 184
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185
-
EE
-
TB given in BB)
3.
Explain the
construction of slow sand and rapid gravity filte
rs. (Ans: Pg no 177
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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
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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
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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
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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
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442
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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
.
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