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indian Forest Servicg (Main
Examination, 2024
JBNV-U-AGRE
AGRICULTURAL ENGINEERING
Time Allowed : Three Hours
Paper - 1
Maximum Marks : 200
Question Paper Specific Instructions
Please read each of the following instructions carefully before attempting
questions:
There are EIGHT questions in all, out of which FIVE are to be attempted.
Questions no. 1 and 5 are compulsory. Out of the remaining SIX questions, THREE are
to be attempted selecting at least ONE question from each of the two Sections A and B.
Attempts of questions shall be counted in sequential order. Unless struck off, attempt of a
question shall be counted even if attempted partly. Any page or portion of the page left
blank in the Question-cum-Answer Booklet must be clearly struck off.
All questions carry equal marks. The number of marks carried by a question/part is
indicated against it.
Unless otherwise mentioned, symbols and notations have their usual standard meanings.
Assume suitable data, if necessary and indicate the same clearly.
Neat sketches may be drawn, wherever required.
Answers must be written in ENGLISH only.
JBNV-U-AGRE
Ql. (5)
(b)
(0)
(6)
(6)
Q2. (3)
(b)
(८)
Q3. (a)
(b)
(८)
SECTION A
Write a short note on the salient characteristics of precipitation on
India.
Discuss in brief about vegetative management and tillage practices used
for control of erosion by wind.
State the adoptability and functions of conservation ditches and contour
stone wall used for control of soil erosion.
Discuss in brief about storage reservoirs and detention reservoirs
methods adopted for control of floods.
Distinguish between absorption and scattering of remote sensing
energy.
Differentiate between the approaches of ‘WARASA - Jan Sahbhagita’
and ‘Hariyali’, the watershed development programmes.
Discuss in brief about the main objectives, their types, limitation in use
and precautionary measures to avoid failure of terraces — a soil erosion
control measure.
Design a drop spillway to be constructed at a place in a gully having
width of 5 m and drainage area of 58 ha. The net drop is 2 m. Take the
rainfall intensity for duration equal to time of concentration of
watershed and design return period of 25 years, as 120 mm/h. The
coefficient of runoff for a watershed is 0-3. The structure is to be
constructed in stone masonry.
Explain the criteria for land levelling design.
Calculate the capacity of a pond having the area enclosed by different
contours as follows :
5. No. | Contour value (10) | Area enclosed (m?)
1 241 210
2 242 280
3 243 380
4 244 360
5 245 470
6 246 540
fs 247 610
What are geometric correction and radiometric correction in digital
image processing ?
JBNV-U-AGRE 2
10
10
20
10
15
15
@4. (a) Discuss the application of remote sensing in land cover and land use
mapping.
00) What is the significance of principal component analysis in digital image
processing ? Also write down the advantages of digital image processing.
(c) What is the basic premise in the Muskingum method of flood routing ?
Describe a procedure for estimating the values of Muskingum coefficient
K and x for a stream reach.
JBNV-U-AGRE 3
10
15
15
Q5. (a)
(b)
(૦
(ત)
(e)
Q6. (a)
(b)
(০
07. (a)
(b)
SECTION B
Enlist the structures to be used in measuring irrigation water and also
write their suitability.
What are the characteristics of the aquifer that influence yield of
wells ? Explain in brief.
How does waterlogging and salt accumulation affect the agricultural
land adversely ?
What is hermetic storage ? List the advantages of using hermetic
storage structures.
Write in brief about :
(i) Woven Mesh type of farm fence
(ii) Seasoning of Timber
Compute most efficient width for an open ditch/channel with flow depth
of 2.40 metres in silt loam soil. What are the velocity and channel
capacity, if channel gradient is 0-09 per cent and Manning’s roughness
coefficient is 0-04 ? The side slope of the channel for silt loam soil can be
taken as 1-5: 1.
Discuss the effect of pump speed and impeller diameter on the
performance of centrifugal pump.
What are the supplemental structures used in tile drainage system for
their successful functioning and long life ?
A well penetrating aquifer which is underlain and overlain by
impermeable layers was tested with a uniform discharge of
1000 litres/min. The steady state drawdowns measured in two
observation wells which were at 1-0 m and 10-0 m radial distances from
the centre of the pumped well were 13-40 m and 4-20 m, respectively.
Determine the hydraulic properties of the aquifer, if its saturated
thickness is 10-0 m.
Describe the main hydraulic principles involved in designing of sprinkler
irrigation system.
JBNV-U-AGRE 4
15
10
१0६
15
10
(০) Write short notes on the following : 15
(i) Functions of Septic Tank
(11) 18100057 Houses
(ఘు യസ്
(iv) Slump Test on Concrete
യ CAP Storage System
౧8. (a) Discuss the importance of location selection for establishment of a
farmstead. What are the facilities to be kept in mind while designing a
good farm house ? 15
00) What are the different components of silo storage system ? Mention
specific advantages of metallic silos over concrete silos. 15
(c) | What is the necessity of controlling environment inside the greenhouse ?
Briefly mention different methods to control greenhouse environment. 10
JBNV-U-AGRE 5
