IFS Agricultural Engineering 2000
Paper-I
Section A

1. Answer any four sub-parts not exceeding 150 words for each sub-part

Describe the constructional features of different types of earth dams used for farm pond and reservoirs. Describe their functional design parameters

Describe different types of permanent structures used for preventing gully erosion with their salient features and suitability of adoptation .

Four hundred meter long graded bunds are constructed on an average slope of 2.5%. Vertical interval is 1.5m. The rainfall intensity for the time of concentration and for the recurrence interval is 16.5 cm/h. The run-off coefficient is 0.3. Estimate the design run-off rate of each bund .

What are the objectives of soil loss equation and explain the procedure how the erosivity index and erodibility index are worked out .

What are items on which attention is to be paid in planning of soil conservation strategy

2. Answer the following questions

a. What do you understand by flood routing? Explain with the help of curves, the graphical method of flood routing

b. Describe different stages of gully erosion

c. Explain the phases involved in the design of permanent gully control structures .

d. Write short notes on any four:

Rain-gauge

Unit-hydrograph

USDA soil Classification

Stage recorder

Ill effects of erosion

Command Area Development.

3. Answer the following questions

State the merits and demerits of conventional and remote sensing approach for mapping of land use

Describe different applications of remote sensing in water-shed management

Describe the procedures for conducting large-scale remote sensing aerial photography .

4. Answer the following questions

a. What do you understand by CIS. How is this used in remote sensing applications

b. Describe the method used in identification and mapping of land use

c. Write short notes on any four:

Infra-red sensor

Thermal sensor

Geosynchronous satellite based aerial photography

Water bodies

Active sensor

Land sat images

Section B

5. Answer any four sub-parts not exceeding 150 words for each sub-part:

a. Discuss the main reasons for poor irrigation efficiencies in canal command areas. Suggest the steps for improvements

b. Under what situation will you recommend the use of:

Centrifugal pump

Propeller pump

Submersible pump on the farm? Draw the performance characteristic curve for centrifugal pump

c. A trapezoidal earthern channel is constructed with a bed slope of 0.03%. The bottom width is 2 in, depth of flow is 0.60 in, and the side slope of channel is 1. Calculate the discharge of the channel if the value of n is 0.025

d. State different methods of measuring evapotranspiration in the field

e. What are the requisites to be kept in mind while selecting well screens and also explain how the well development process is carried out to put the wells in use

6. Answer the following questions

a. Describe the advantages and limitations of a sprinkler method of irrigation. What are different types of sprinklers used in the field

b. Describe the causes of water flooding on the farm. Describe different methods of field drainage with their suitability of adoption

c. Write short notes on any four:

Infiltration and percolation

Storage coefficient

Unconfined aquifer

Cavity wall

Interceptor drain

Fertigation

7. Answer the following questions

a . Design a farm workshop and an implement shed for a 100 ha farm, Show the layout plan in each case

b. Name different components of a modern farmstead. Give the plan-layout for a farm on the road-side. What factors will you consider for the safety of the farm from different destroying forces

c. A short R. C. C. Column of size 230 × 230 mm is reinforced with 4 steel bars of 16 mm size. The compressive strength of the concrete is 4 N/mm2 and that of steel is 190 N/mm2. Estimate the safe load bearing capacity of the column .

8. Answer the following questions

a. Give the plan-layout of a godown for storing 100 tons of wheat in bags. Assume all necessary data .

b. Give the layout of a water supply system for a family of 5 members to meet their all requirements. The source of water supply is shallow well .

c. How is the cooling load estimated for designing a refrigerated cold storage structure for fruits and vegetables .

d. Write short notes on any four:

Curing of R. C. C.

Seasoning of timber

Soaking pit

Trench silo

Qualities of good bricks

Electric brooder