Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January CE 7th Sem 71876 Hydrology And Dams Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (CE) (2012 to 2017) (Sem.?7)
HYDROLOGY AND DAMS
Subject Code : BTCE-817
M.Code : 71876
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1.
What does point rainfall refers to?
2.
Name various recording rain gauges.
3.
Distinguish between depression storage and interception.
4.
What are the various methods of base flow separation?
5.
What are the limitations of unit hydrograph?
6.
List various forces acting on gravity dam.
7.
State major difference between Arch and Gravity dam.
8.
What do you mean by phreatic lines?
9.
List advantages of Buttress dam.
10. List advantages of gated spillways.
1 | M-71876
(S2)-808
SECTION-B
11. Explain briefly the following relationships relating to the precipitation over a basin :
a) Depth- Area relationship
b) Maximum Depth- Area -Duration curves.
c) Intensity-Duration-Frequency relationship.
12. List the factors affecting infiltration process. Enumerate various types of infiltrometers.
13. List the various assumptions made in the two dimensional design of gravity dams.
Enumerate analytical method of two dimensional analysis for analysis of stability of dam.
14. Distinguish between constant radius and constant angle layouts of an arch dam. Obtain
the value of the best central angle for the latter.
15. Enumerate different types of buttress dams and explain as to how a slab type of buttress
dam differs in its design as compared to a concrete gravity dam?
SECTION-C
16. A basin has 400 sq. km of area, L = 35 km and Lca = 10 km. Assuming Ct = 1.5 and
Cp = 0.70 develop a 3-h synthetic unit hydrograph for this basin using Synder's method.
17. a) Enumerate Gumbel's method.
b) Flood frequency computations for the river Chambal at Gandhinagar dam by using
Gumbel's method, yielded the following results :
Return period T (years)
Peak Flood (m3/s)
50
40809
100
46300
Estimate the flood magnitude in this river with a return period of 500 years.
18. How would you proceed to determine the phreatic line through homogenous earthen
dams provided :
a) With a horizontal filter
b) Without a horizontal filter?
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
2 | M-71876
(S2)-808
This post was last modified on 26 June 2021