Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 5th Sem New 2150602 Hydrology And Water Resources Engineering Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2150602 Date: 20/06/2019
Subject Name: Hydrology & Water Resources Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Calculate the average annual rainfall using Theissen polygon method for the
following data:
Rain gauge station 1 2 3 4 5 6 7 8
Annual rainfall (cm) 34 35 36 37 38 39 40 41
Area (Km
2
) 55 50 45 33 69 49 55 39
03
(b) Give the name of automatic rain gauges and explain any one in detail with
figure.
04
(c) Explain in detail with neat sketch the double mass curve technique to check the
consistency of rainfall data.
07
Q.2 (a) Explain the Rational Method for estimation of peak flood discharge. 03
(b) Explain Darcy's law with figure. 04
(c) In a certain river basin, there are four rain gauge stations, with their normal
annual precipitation amounting to 800, 520, 450 and 390 mm, respectively.
Determine the optimum number of rain gauges in the catchment, if it is desired
to limit the error in the mean value of rainfall in the catchment to 10 %.
07
OR
(c) A thunder storm of 6hour duration produces the following flood hydrograph.
Derive the ordinates of unit hydrograph for a catchment area of 2845 km
2
. Also
sketch the resulting unit hydrograph.
Date July 3 July 4 July 5
Time
(hour)
6
am
12
pm
6
pm
12
am
6
am
12
pm
6
pm
12
am
6
am
12
pm
Discharge
(m
3
/sec)
100 400 1500 3500 5100 3000 1500 900 400 100
07
Q.3 (a) Describe in brief Reservoir sedimentation 03
(b) Describe the situations under which the following dams are constructed
(1) Gravity dam (2) earthen dam
04
(c) Discuss occurrence of groundwater with a neat sketch and define various water
bearing formations.
07
OR
Q.3 (a) Write a brief note on flood damage analysis. 03
(b) Define following terms: (i) Firm Power, (ii) Load Factor, (iii) Gross Head,
(iv) Operating Head
04
(c) Explain the mass curve method that can be used for determining reservoir
capacity.
07
Q.4 (a) Discuss the measures to be adopted for water conservation in water scarce
regions.
03
(b) Distinguish between (1) Hydraulic and hydrologic method of flood routing
(2) Hydrologic storage routing and hydrologic channel routing
04
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? SUMMER 2019
Subject Code: 2150602 Date: 20/06/2019
Subject Name: Hydrology & Water Resources Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Calculate the average annual rainfall using Theissen polygon method for the
following data:
Rain gauge station 1 2 3 4 5 6 7 8
Annual rainfall (cm) 34 35 36 37 38 39 40 41
Area (Km
2
) 55 50 45 33 69 49 55 39
03
(b) Give the name of automatic rain gauges and explain any one in detail with
figure.
04
(c) Explain in detail with neat sketch the double mass curve technique to check the
consistency of rainfall data.
07
Q.2 (a) Explain the Rational Method for estimation of peak flood discharge. 03
(b) Explain Darcy's law with figure. 04
(c) In a certain river basin, there are four rain gauge stations, with their normal
annual precipitation amounting to 800, 520, 450 and 390 mm, respectively.
Determine the optimum number of rain gauges in the catchment, if it is desired
to limit the error in the mean value of rainfall in the catchment to 10 %.
07
OR
(c) A thunder storm of 6hour duration produces the following flood hydrograph.
Derive the ordinates of unit hydrograph for a catchment area of 2845 km
2
. Also
sketch the resulting unit hydrograph.
Date July 3 July 4 July 5
Time
(hour)
6
am
12
pm
6
pm
12
am
6
am
12
pm
6
pm
12
am
6
am
12
pm
Discharge
(m
3
/sec)
100 400 1500 3500 5100 3000 1500 900 400 100
07
Q.3 (a) Describe in brief Reservoir sedimentation 03
(b) Describe the situations under which the following dams are constructed
(1) Gravity dam (2) earthen dam
04
(c) Discuss occurrence of groundwater with a neat sketch and define various water
bearing formations.
07
OR
Q.3 (a) Write a brief note on flood damage analysis. 03
(b) Define following terms: (i) Firm Power, (ii) Load Factor, (iii) Gross Head,
(iv) Operating Head
04
(c) Explain the mass curve method that can be used for determining reservoir
capacity.
07
Q.4 (a) Discuss the measures to be adopted for water conservation in water scarce
regions.
03
(b) Distinguish between (1) Hydraulic and hydrologic method of flood routing
(2) Hydrologic storage routing and hydrologic channel routing
04
2
(c) Define the following with figure (1) Earthen dam (2) Gravity dam
(3) Arch dam (4) Buttress dam (5) Spillway
07
OR
Q.4 (a) What is the need for planning of water resources projects? 03
(b) Define ?Drought?. Distinguish between hydrological drought and
meteorological drought.
04
(c) Explain with a neat sketch the components of a hydroelectric power plant. 07
Q.5 (a) Discuss the factors affecting infiltration. 03
(b) Discuss the Penman-Monteith method for evapotranspiration estimation. 04
(c) Define flood and its causes. Also discuss various measures taken to control the
flood.
07
OR
Q.5 (a) Define the following with figure (1) Infiltration index (2) Specific yield 03
(b) Define unit hydrograph and its applications. 04
(c) Enlist various methods of flood estimation. Describe flood frequency analysis. 07
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This post was last modified on 20 February 2020