Download AKTU B-Tech 7th Sem 2016-2017 NCE 043 Open Channel Flow Question Paper

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 043 Open Channel Flow Question Paper

Printed Pages: 4 NCE - 043
I (Following Paper ID and Roll No. to be ?lled in your |
Answer Books)
Paper ll) : 2289950 Roll No. I
B.TECH.
Regular Theory Examination (Odd Sem-VII), 2016-17
OPEN CHANNEL F LOW
Time : 3 Hours Max. Marks : 100
Note: Attempt all Sections If require any missing data; then choose
Suitably.
SECTION -A
1. Attempt all questions in brief. (10X2=20)
21) Discuss velocity distribution for rectangular a
rectangular open channel.
b) What do you mean by speci?c force?
c) Explain the term wetted perimeter and hydraulic
mean depth.
d) De?ne hydraulic jump.
'6) De?ne steaming ?ow, critical ?ow and shooting
?ow. I
t) Classify surface pro?les.
g) What are the applications of hydraulic jump?
h) De?ne Celerity of a wave.
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i)
j)
2. Attempt any three of the following
a)
13)
NCE - 043
Draw steep slope pro?les.
Differentiate between deep and shallow water waves.
SECTION - B
(3 X 1 0=3 0)
Water is ?owing at a critical depth at a section in a
triangular shaped channel, with side slope of 0.5H:
IV with its apex pointing upwards. If the critical
depth is 1.6 m and'base with is 3m, estimate the
discharge in the channel and the speci?c energy at
the critical depth section.
A rectangular channel with a bottom width of 4 m
and a bottom slope of 0.0008 has a discharge of
1.5m3/s. in a gradually vaIied ?ow n this channel,
the depth at a certain location is found to be 0.3m.
Assuming n = 0.016, determine the type of GVF
pro?le.
In a hydraulic j ump taking place in a horizontal apron
below an Ogee shaped weir the discharge per unit
width is 0.25 m3/s/m and the energy loss is 2.75 m.
Estimate the depths at the toe and heel of the jump.
Derive the differential equation of SVF with
increasing dischaxge with its assumptions.
What do you mean by a culvert? Write down its
features and explain different types of inlet and
outlet controls in culverts.
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NCE - 043
SECTION - C
3. Attempt any one part of the following (1 X 10=10)
a)
b)
Explain speci?c energy curve with a neat sketch and
also derive critical ?ow condition for constant
discharge.
A compound channel is symmetrical in cross-
section and has the following geometn'c properties.
Main channel: trapezoidal cross-section, bottom
width = 15m., side slope 1.5 H: IV,'bank full
depth;3m manning?s coefficient = 0.03,
longitudinal slope=0.0009.
Flood plains: width 75 m, side slope = 1.5 H: l
V,manning?s coefficient = 0.05, longitudinal slope
= 0.0009.
Compute the uniform ?ow discharge for a ?ow with
a total depth of 4.2 m by using diagonal interface
method. -
4. Attempt any one part of the following: (1X10=10)
a)
b)
A river 100 m wide and 3m deep has an average bed
slope of 0.0005. Estimate the length of GVF pro?le
produced by a low dam which raises the water
surface just upstream of it by 1 .5m. Assume n =
0.035.
i) What do you mean by ?ow pro?les? Classify
them with neat sketch.
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1.:
NCE - 043
ii) Derive the basic differential equation of GVF
with assumptions.
Attempt any one part of the following: (1 X10=10)
a)
b)
i) ?Hydraulic jump can be used as an energy
dissipator?. Discuss with neat sketch.
ii) What do you mean by surge? Discuss its types.
Derive the equation for motion for gradually varied
unsteady ?ow.
Attempt any one part of the following: (1 X 10=10)
3)
b)
Explain bottom racks. Classify different types of
?ows over bottom racks with neat sketch.
What are the various methods used in pro?le
computation of Spatially Varied ?ow.
Attempt any one part of the following: (1 X10=10)
3)
b)
Explain the ?ow in a channel with non-linear
alignment with a neat sketch.
What are the factors affecting culvert ?ow end also
give in brief steps for design of culverts.
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