JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II FARM MACHINERY AND EQUIPMENTS-I Previous Question Paper (December - 2018 - R13)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.
Part A
Write advantages of Farm mechanization.
Answer
Farm mechanization increases overall agricultural productivity and production efficiency. It reduces the drudgery of manual labor, improves the timeliness of field operations, and enhances the precision of input application, leading to higher crop yields.
What are the different sources of farm power?
Answer
The primary sources of farm power include: 1) Human power, 2) Animal power (draught animals), 3) Mechanical power (tractors, oil engines), 4) Electrical power, and 5) Renewable energy sources (solar, wind, and biomass).
List out objectives of secondary tillage.
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Write the equation for draft, and relation between draft and speed.
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Define effective and theoretical field capacities.
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List out different earth moving equipments.
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Differentiate seed drill, planter and transplanter.
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What is calibration of seed drill and mention the advantage of it?
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List out different types of sprayers used in field and orchard crops.
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What is drift and list out factors affecting the drift?
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Part B - Unit 1
A farmer purchased 35 HP diesel tractor for Ra.3,50,000/-. Its total working life 12000 hours and annual use 1000 hours. The annual interest is 16%. The tractor is being used with an 11-tyne cultivator costing Rs.40000/-. The shovel spacing is 22.5 cm. Speed of cultivation is 6 kmph and field efficiency is 70%. Calculate (i) Cost of tractor in Rs./h and (ii) Cost of cultivation in Rs./ha. Assume necessary data if required.
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What is depreciation and write the equation used for calculating depreciation.
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An implement costing Rs. 70,000/- is expected to useful life of 10 years and trade in value of 10 percent of the initial cost. Calculate the depreciation value after 6 years by using different methods.
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Explain different heat treatment processes of metals.
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Part B - Unit 2
Explain how to measure vertical and horizontal suction in MB plough.
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Explain about standard disc plough and list out different accessories.
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Explain about chisel plough and subsoiler.
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Explain about cultivators and draw the line diagrams of different sweeps and shovels.
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Part B - Unit 3
The capacity of a truck is 12.25 cu.m of earth. If the earth weights 1762 kg/cu.m in situ and 1506 kg/ cu.m loose, what is the capacity of the truck expressed cu.m bank measure.
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Explain about different operation performed by the bulldozers.
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List out commonly used equipment for excavation and explain basic shovel.
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Explain about wheel type trenching machine.
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Part B - Unit 4
Explain different types of seed metering mechanisms.
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Explain working and adjustments of rice transplanter.
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Write the functions and parts of seed cum fertilizer drills.
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Explain about different types of furrow openers in seed drills.
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Part B - Unit 5
Explain about foot sprayer.
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A field sprayer is operated by a tractor at a speed of 6 kmph. The sprayer boom has 15 nozzles spaced 45 cm apart. Time lost in turning is 10 per cent and tank filling 5 percent. Calculate the area covered per hectare.
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Explain about mechanical and hydraulic agitation.
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Explain about Mist blower and differentiate between rocker and foot sprayer.
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