Subject:- Farm Machinery and Equipments
(AE551)
|
Exam
|
Regular
|
||
Level
|
BE
|
Full Marks
|
80
|
Program
|
B. Agri
|
Pass mark
|
32
|
Year/part
|
II/II
|
Time
|
3 hrs
|
Tribhuwan University
Institute
of Engineering
Examination
Control Division
2073 Bhadra
ü Candidates are required to give their answer in their
own words as far as practicable.
ü Attempt All questions.
ü The figures in the margin indicate Full marks.
ü Assume suitable data if necessary.
1.
A) What are the objectives of farm
mechanization? Explain scope and limitation of farm mechanization.
B) Explain the role of tillage in
agricultural economics.
C) An indigenous plough has a 15 cm
wide furrow at the top and 8 cm depth. Calculate the volume of soil handled in
8 hours of day. If the speed of working is 3.5 kmph, calculate the horse power requirement
to pull the plough, if soil resistance is 0.8 kg/cm².
2.
A) Differentiate the primary tillage and
secondary tillage and list out implements used in primary as well as secondary
tillage.
B) A horizontal plate planter has 54 cells on its peripheral length of
54.3cm. The gear on the plate drive shaft has 24 teeth and is rotated by feed
shaft gear which has 15 teeth. A 20 toothed sprocket on the main shaft drives
the 10 toothed sprocket on the feed shaft. Find the spacing of the seeds in the row and
also the speed of cell plate in kmph, if the ground wheel speed is 1.125 kmph. Take
the diameter of ground wheel as 0.8 meter. Find also the population of seeds in
per hectare if cell fill is 105% and the row spacing is 25cm.
3.
A) Discuss the need and objective of spraying
and dusting in brief. Classify duster
and explain them in brief.
B) Enumerate the various threshing
methods employed in country like Nepal. List out the function of power thresher
and explain different types of power thresher with neat sketches.
4.
A) What do you mean by proper registration and
alignment of mower? Describe the working of vertical conveyer reaper with neat
sketches.
B) What is the custom hiring of
farm machines? Write down the advantages and disadvantages of combine –harvester
thresher. Discuss about the tool and equipments for hill farming in Nepal.
5.
A) A chaff cutter having two knives cut dry hay
at 60rpm giving 480kg/hour. If the throat size is 18 cm×6 cm find the effective density of dry hay for theoretical length
of cut of 2.5cm
B) How paddy transplanter works,
explain.
C) A progressive farmer willing to
invest in custom hiring of machine in agricultural field. He requests you to
calculate the operating cost of mould board plough with the very few
information listed under.
i)
Cost of tractor = 13,50,000/-
ii)
Cost of mould board plough = 3,50,000/-
***
Source:-
Department of agricultural engineering, Technical support:-
Paudelpadamprasad
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