Exam Details
| Subject | Environmental Engineering | |
| Paper | ||
| Exam / Course | Diploma in Civil Engineering (DCLE) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2015 | |
| City, State | new delhi, |
Question Paper
00561
No. of Printed Pages: 4 IBCE-033I
DIPLOMA IN CIVIL ENGINEERING
DCLE(G) I DCLEVI
Term-End Examination
December, 2015
BCE-033 ENVIRONMENTAL ENGINEERING
Time: 2 hours Maximum Marks: 70
Note: Attempt five questions in all. Question no. 1 is compulsory. All questions carry equal marks. Use of scientific calculator is allowed.
1. Choose the correct answer.
Which source of water, among the following, is not an underground water source?
Wells
Rivers
Springs
Infiltration galleries
Using Kuichling formula, fire demand is calculated as
Q 2182 sqrt(P)
Q 2182
Q 3182 sqrt(P)
None of these
Bacteria which require oxygen for survival are called
aerobic
anaerobic
facultative
None of these
Surface loading or overflow rate of sedimentation tank, passing a discharge Q and having length depth D and width is given by
Q/BxD
Q/BxL
QxBxL
Q/BxDxL
Hypochlorite ions are more effective in removing bacteria than hypochlorous acid. This statement is
True
False
Standard B.O.D. is the B.O.D. after
1 day
5 days
10 days
None of these
To collect sand, grit, debris, etc. from storm water, are provided.
manholes
inverted siphons
catch basins
None of these
2. An artesian well has a diameter of 20 cm. The thickness of the aquifer is 30 m and its permeability is 36 m/day. Find its yield under a drawdown of 4 m at the well face. Radius of influence is 245 m.
Define average daily per capita demand and list the factors affecting it.
3. Define and explain
Surface loading, and
Detention period.
Explain sedimentation with coagulation.
4. Draw a neat sketch of a rapid gravity filter and describe how it works.
5. What are manholes? Explain with a neat sketch.
Explain anaerobic sludge digestion using digestion tank.
6. Give the flow diagram of activated sludge process and describe its working.
7. Write short notes on any four of the following:
MPN Test
Water-borne Diseases
Break Point Chlorination
B.O.D.
Inverted Siphon
Dissolved Oxygen (D.O.)
No. of Printed Pages: 4 IBCE-033I
DIPLOMA IN CIVIL ENGINEERING
DCLE(G) I DCLEVI
Term-End Examination
December, 2015
BCE-033 ENVIRONMENTAL ENGINEERING
Time: 2 hours Maximum Marks: 70
Note: Attempt five questions in all. Question no. 1 is compulsory. All questions carry equal marks. Use of scientific calculator is allowed.
1. Choose the correct answer.
Which source of water, among the following, is not an underground water source?
Wells
Rivers
Springs
Infiltration galleries
Using Kuichling formula, fire demand is calculated as
Q 2182 sqrt(P)
Q 2182
Q 3182 sqrt(P)
None of these
Bacteria which require oxygen for survival are called
aerobic
anaerobic
facultative
None of these
Surface loading or overflow rate of sedimentation tank, passing a discharge Q and having length depth D and width is given by
Q/BxD
Q/BxL
QxBxL
Q/BxDxL
Hypochlorite ions are more effective in removing bacteria than hypochlorous acid. This statement is
True
False
Standard B.O.D. is the B.O.D. after
1 day
5 days
10 days
None of these
To collect sand, grit, debris, etc. from storm water, are provided.
manholes
inverted siphons
catch basins
None of these
2. An artesian well has a diameter of 20 cm. The thickness of the aquifer is 30 m and its permeability is 36 m/day. Find its yield under a drawdown of 4 m at the well face. Radius of influence is 245 m.
Define average daily per capita demand and list the factors affecting it.
3. Define and explain
Surface loading, and
Detention period.
Explain sedimentation with coagulation.
4. Draw a neat sketch of a rapid gravity filter and describe how it works.
5. What are manholes? Explain with a neat sketch.
Explain anaerobic sludge digestion using digestion tank.
6. Give the flow diagram of activated sludge process and describe its working.
7. Write short notes on any four of the following:
MPN Test
Water-borne Diseases
Break Point Chlorination
B.O.D.
Inverted Siphon
Dissolved Oxygen (D.O.)
Other Question Papers
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