Agricultural Power, Machinery, and Allied Subjects Flashcards
A hand operated tractor which is suitable for
both primary and secondary tillage used when
field has been soaked for at least half a day to
soften the soil
Puddling-type floating tille
Optimum axle speed for puddling-type floating
tiller
250 rpm
It is the ratio of the drawbar power and the
wheel axle power.
Traction efficiency
The sum of all resistance acting on the tractor.
Running resistance
Running resistance of a tractor includes
- rolling resistance
- air and acceleration resistance
- slope resistance
Weight transfer means
to shift implement’s weight to the tractor’s
drive wheel in order to improve traction
is the hydraulic implement hitch system
which automatically raises or lowers a soil
engaging implement to maintain its draft at a
pre-selected value.
Automatic draft control in a modern farm
tractor
An international testing center for tractor
NEBRASKA
When a machine is driven directly from the
shaft of a power source, the power is
transmitted using
direct drive
Belt size designation for agricultural V-belt
HA, HB, HC, HD, HE
It is a gripping device between power source
Clutch
Machine element that transmit torque and
power.
Shaft
It is used to fasten shaft pulleys and hubs of
gears together.
Keys
used to transmit power between two
intersecting shafts usually when the angle
between them is variable
universal joint
An irrigation pump shall be driven by a single
cylinder engine. The set-up has the following
data: Engine rpm=2200, Pump rpm=1800,
Diameter of Engine Pulley=25 cm, what should
the diameter of the second pulley be?
30.55 cm
The length of a flat-belt pulley drive with the
following data is: Diameter of first pulley=300
mm, diameter of second pulley=400 mm,
center distance of the pulley shaft=10 meters
21.05 m
A corn sheller cylinder will be driven by 10 hp
diesel engine thru a V-belt drive. The engine
has a speed of 1800 rpm while the required
speed of the corn sheller is 650 rpm. The
effective diameter of the driver pulley is 12
inches. What should be the diameter of the driven pulley?
33 in.
A type of plow that is widely adapted in
breaking different types of soil for turning and
covering crop residues.
Moldboard plow
The power required in pulling an implement.
Drawbar power
A tillage equipment which displaces and
shatters soil, used to reduce soil strength and to
bury or mix plant materials and fertilizers in the
tilled layer.
Primary tillage equipment
A tillage implement consisting of two or four
gangs of concave disks.
Disk harrow
A tillage implement which shatters the soil
without complete burial or mixing of surface
materials.
Chisel plow
Mechanical manipulation of soil for any
purpose.
Tillage
A procedure in which planting is made directly
into an essentially unprepared seedbed.
No-tillage planting
The pushing or rolling of soil by a steeply
inclined blade
Bulldozing
A secondary tillage operation which pulverizes,
smoothens, and packs the soil during seedbed
preparation and also controls weeds.
Harrowing
A tillage and land forming operation using a
tool which splits the soil and turns two furrows
laterally in opposite directions, thereby
providing a ridge-and-furrow soil
configuration.
Listing
Minimum soil manipulation necessary for crop
production or for meeting tillage requirements
under existing soil condition.
Minimum tillage
A tool which cuts plants materials and soil
ahead of another tool.
Coulter
Jointer
The force to propel an implement in the
direction of travel.
Draft
The angle, in a vertical plane perpendicular to
the direction of travel, between a centralized
tool or reference axis and the soil surface.
Tilt angle
It is deep chiselling below 16 in. for the
purpose of loosening soil for root growth
and/or water movement.
Ridging
It is the part of the moldboard plow that
receives the furrow slice from the share and
turns to break, crush, and pulverize the soil.
Moldboard
The part of the moldboard plow which is used
to cut the soil.
Share
It is a part of the plow bottom which helps to
counteract the side pressure exerted by the
furrow slice.
Landside
A type of implement which is directly attached
to the tractor and its power lift is dependent
upon the tractor engine for its general
operation.
Integral-mounted
A type of implement type which is supported
by two or three wheels and is hitched to the
drawbar of the tractor where it is being pulled.
Trailing
A type of plow which is equipped with plow
bodies which turns the furrow slice to one side
only.
One-way plow
A type of plow which has two sets of bodies
mounted symmetrically on a shareframe which
can be rotated over 180 degrees along the
longitudinal axis.
Reversible plow
The factors that affect the draft of the plow
Soil condition
Hitch to the tractor
Topography
Percentage of work done in pulling an average
plow.
43%
Percentage of work of plow used in turning
slice of soil.
34%
A point in which all the horizontal and vertical
forces in the plow meets
Center of resistance
Drawbar horsepower is a factor of
force exerted by plow
speed of plow
A type of plow designed to reduce friction by
making a rolling bottom instead of sliding
along the furrow.
Disk plow
A primary-tillage plow used for small rice
farm.
a. Moldboard
b. Rotary
c. Spiral
A primary- tillage plow for rice farming that is
attached in replacement to the cage wheel of a
power tiller.
Spiral
An angle of the disk plow in reference to the
vertical plane.
Tilt angle
An angle of the disk plow in reference to the
direction of travel of the plow
Disk angle
A plow that combines the primary and
secondary tillage at the same time. It is used to
cut and to pulverize the soil.
Rotary plow
