AGRICULTURAL ENGINEERING
Paper-1
Time Allowed: Three Hours
INSTRUCTIONS
Candidates should attempt questions I and S which are compulsory, and any THREE of the remaining questions, selecting at least ONE from each Section. All questions. carry equal marks. Marks allotted to parts of a question are indicated against each. Answers must be written in ENGLISH only. Assume suitable data, if necessary, and indicate the same clearly. Neat sketches may be drawn, wherever required. Important ft{ote All parts/sub-parts of a question must be answered contiguously. That is, where a question is being attempted, all its constituent particularistic must be attempted before moving on to the next q!Ingestion. Pages left blank, if any, in the answer-book(s) are to be clearly struck out. Answers that follow pages left blank may not be given credit.

SECTION-=A .
1. Answer the following, keeping your answers brief and to the point:- 5x8=40

What is surplussing arrangement in the design of contour bunds? Write its need and suggest the suitable location in the bund. Also list different types of outlets used in contour bunding.
How do you classify bench terraces Highlight their salient features with.neat sketches.
Briefly describe various methods of reducing surface wind velocities in wind erosion control.
List out the procedure for design of a grassed waterway.
Bring out the applicability of GIS in planning and development of watershed.

2. Describe Universal soil loss equation (USLE) and discuss its different factors. 10
What is gully erosion Write different stages of gully development. Discuss classification of gullies. 10
Design a system of retards for a stream 15 m wide where the channel makes a 35° tum on s• curves. Also discuss the method. 10
Discuss working of Coshocton type runoff samplers. How will you design storage tank for Coshocton type runoff sampler Also discuss· limitation of the method. 10

3. Write difference between:
Gully erosion and stream channel erosion
Wind break and shelter belt
Diversions and waterways
Contour strip cropping and field strip cropping.10

With the help of neat sketch, describe purposes of various structural components of a drop spilJway. 10
Explain a procedure for supplementing the missing rainfall data. 10
Discuss the importance of people's participation in waterShed development. I0

4. Discuss the various elements used in object recognition in photo interpretation. 10
What data would you like to include in a watershed planning report on a recommended management programme Explain. I0
How will you check stability of Soil Conservation structures against following causes of failures Sliding Shear Friction Overturning and' Tensile stresses. 10
How is the water requirement of a farm pond determined Explain. 10

SECTION-B

5. Answer the following, keeping your answers brief and to the point:- Sx8=40
HighligKt different methods of surface drainage withthe help of suitable diagrams.
What is cavitation
What do you understand by current meter? Name two main types of current meters and explain one of them.
What is leaching requirement of a land? How is it determined
Explain reclamation measures for alkali soils.

6. Explain direct methods of evapo-transpiration measurement. 10
Explain different types of weir used for measuring water on farms, What precautions are necessary to ensure reliable results in measurement
Discharge of a tube well is 40 lit/sec. It irrigates 1.2 ha area in .16 hrs. Water is available at the plot at the rate of 35 lit/sec. The depth of root zone of I crop is 1.2 m and loss of water in the plot is 150m3.Water holding capacity of the soil is 20 cm/m. 50% of available moisture was available in the plot before irrigation. Calculate water conveyance, water application and water storage efficiency. 10 What do you understand by border irrigation method Under what conditions is this method chosen Also write its advantages. 10

7. What discharge can be expected from an unconfined well having diameter as 3.0 meters? The draw down in the well is 8.0 m and the aquifer is saturated to a depth of 15.0 meters. The coefficient of permeability of the aquifer material is 5 meter per day and the radius of influence is 150 meters. 10

Explain design procedure of a drip irrigation system." Write the advantages and disadvantages of drip . irrigation system. 10

How will You determine folloWing properties of saline and alkali soils
Ph
Soluble salts .
Gypsum requirement 10

An earthen channel is laid on a grade of O.I5% with bottom width of 60 em and side slope I I. The depth of flow of water is 1.2 m. Calculate the velocity of I flow and carrying capacity of channel assuming Manning's roughness coefficient as 0.04. 10

8. Water from a tube well is flowing over" a rectangular .
weir. The width of crest of the weir is 120 cm and depth of water flowing over(the crest is 36 cm: The stream of water is diverted into a field of I ha. The depth of irrigation is 7.5 cm. calculate time required to irrigate the field. I 0

Describe the reasons for the following troubles of
centrifugal pumps and how these can be rectified.
Pump fails to prime'
Pump fails to develop sufficient pressure or capacity.
What is farm stead? What factors govern the location of the farm stead on the farm 10
What are the requirements of good storage structures on farms Describe. I0