Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January Agriculture-Engineering 3rd Sem 78588 Farm Machinery Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (Agriculture Engineering) (Sem.?3)
FARM MACHINERY
Subject Code : BTAG-302-19
M.Code : 78588
Time : 3 Hrs. Max. Marks : 60
INST RUCT ION TO CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1)
How a plough size is expressed?
2)
What is a disc angle and its purpose in disc plough?
3)
What is one way and a two-way plough?
4)
Name the machine factors which affect soil pulverization by rotavator?
5)
How will you designate the size of seed drill?
6)
What are the basic jobs performed by a sprayer nozzle?
7)
What are the differences between mowers and windrowers?
8)
What are the differences between reaper and reaper binder?
9)
What effect on seed rate occurs, if the speed of travel of tractor operated seed drill is
double?
10) What is dibbler?
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SECTION-B
11) What is the need for heat treatment? Describe the process of annealing and its objectives.
12) What are the different types of seed metering mechanism? Explain the working of Fluted
feed type and internal double run type metering mechanism.
13) What are the different weed control techniques adopted by Indian farmers? Explain any
two mechanical weeding equipment with a neat sketch.
14) What are the main functions of a cultivator? A tractor is attached with a 9 tine cultivator.
While field testing, the drawbar dynamometer shows an average pull of 14000 N. The
speed of the tractor is 6 km per hour. Find the power of the tractor.
15) A chaff cutter having two knives cut dry hay at 60 rev/min giving 500 kg per hour. If the
throat size is 18 cm ? 6 cm, find the effective density of dry hay for a theoretical length of
cut 2.5 cm.
SECTION-C
16) What is the seed drill? Describe the process of calibration of the seed drill. Calculate the
seed rate/hectare of an 11 ? 23 cm seed drill, whose main drive wheel is 125 cm diameter
and the total weight of grain collected in 20 revolutions is 0.450 kg.
17) Explain the construction and working principle of scraper and digger and their use in
agriculture. How they differ from each other?
18) Describe the working principle of a combine. Name the important parts of a combine. Give
a grain flow diagram of a combine.
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 26 June 2021