Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2016-2017 NCE 035 Engineering Hydrology Question Paper
(Following Paper ID and Roll No. to be ?lled in your
Paper ll): 2295023 . Roll No.
Answer Books)
B.TECH.
Regular Theory Examination (Odd S?m-VII), 2016-17
ENGINEERING HYDROLOGY
Time : 3 Hours , Max. Marks : 100
Note : Attempt all Section. If require any missing data; then
choose suitably.
SECTION -A
1. Attempt all question in brief. (10X2=20)
a) De?ne dopression storage. ;
b) What do you mean by permanent welting point?
c) What is subsurface runoff?
d) Write the different forms of precipitation.
e) What is speci?c capacity?
f) Write down-Inglis formula ?
g) De?ne synthetic unit hydrograph
h) Distinguish between water table and piezometric
surface '
i) What do you mean by rain water harvesting?
j) What is the well loss?
035/12/2016/7260 (1) [P.T.O.
NCE-035
SECTION - B
2. Attempt any three of the following : (3XI0=30)
a) De?ne the Hydrology and discuss critically the
statement ?Knowledge of Hydrology is a must for
any water resource planning?.
b) The following are the rates of rainfall for successive
20 minutes period of a 140 minutes storm : 2.5,
2.5, 10.0, 7.5, 1.25, 1.25, 5.0 cm/hr. Taking the value
of 7r index as 3.2 cm/ hr, ?nd out the net runoff in
? cm, the total rainfall and value of Windex.
c) Explain with the help of neat sketches, the ?ow
duration curve method and mass curve method to
measure the runoff.
d) What do you mean by design ?ood? What are the
factors affecting the ?ood hydrograph? Explain the
procedure of using a unit hydrograph to develop the
flood hydrograph due to a storm in a catchment.
e) Write short notes on any four of the following :
(i) Well losses '
(ii) Speci?c capacity and speci?c yield of an
aquifer
(iii) Rain water harvesting
(iv) Aquifer and aquiclude
(v) Radius of in?uence and cone of depression.
SECTION - C
3. Attempt any one part of the following : (l X?10=10)
a) What is meant by hydrological cycle? How can the
parameters of the cycle be'written in an equation
form? Draw a neat diagram to illustrate your answer.
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b)
NCE-035
Explain brie?y the types of rain gauges.
A one-day rainfall of 100 mm at a station was found
to have a return period of 50 years. Determine the
probability that a one-day rainfall of this or larger
magnitude will occur atleast once in 20 successive
years. '
Attempt any one part of the following : (1X10=10)
3)
b)
De?ne evaporation. Discuss the factors that affect
the evaporation from a water body.
Distinguish between : ,_
(i) In?ltration capacity and In?ltration rate
(ii) Actual and Potential evapotranspiration
, ? (iii) F ield Capacity and permanent wilting point
(iv) Depression storage and interception.
Attempt any one part of the following : (1 X10=10)
a)
Write in brief the SCS-CN method for estimating
the runoff volume. The peak of ?ood hydrograph
due to a 3-h duration isolated storm in a catchment
is 270 m3/s. The total depth of rainfall is 5.9 cm.
Assuming an average in?ltration loss of 0.3 cm/h
and a constant base ?ow of 20 m3/s, estimate the
peak of the 3-h hydrograph (UH) of this catchment.
If the area of the catchment is 567 kmz; determine
the base width of the 3-h unit hydrograph by
assuming it to be triangular in shape.
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i N CE-035
b) What is hydrograph? Draw a single peaked
hydrograph and explain its components.
6. Attempt any one part of the following : (l X 10=10)
a) What do you mean by hydrologic reservoir routing?
Describe any 'two methods of hydrologic reservoir
routing.
b) Explain the'terms risk, reliability and safety factor.
A factory'is proposed to be located 'on the edge of
the 50 year ?ood plain of a river. If design life of
factory is 25 years, what is the reliability that it will
not be ?ooded during its design life?
7. Attempt any one part of the following : ? (IXI0=10)
a) Describe various types of tubewells.
b) What are the differences between con?ned and
uncon?ned aquifers for the determination of
discharge with steady ?ow condition? A well
penetrates into an uncon?ned aquifer having a
saturated depth of 100 m. The discharge is 250 litres
per minute at 12 m drawdown. Assuming equilibrium
flow conditions and a homogeneous aquifer,
estimate the discharge at 18 m drawdown. The .
distance from'the well where the drawd'own
in?uences are not appreciable may be taken equal
for both cases.
W
035/12/2016/7260 - (4)
This post was last modified on 29 January 2020