Rice Reaper PAES 212-213: 2004 Flashcards
actual rate of being able to reap palay in a given area per unit of time
actual field capacity
free grains that fall with the cut stalks during delivery and release at the side of the reaper during operation
conveying loss
ratio of the actual field capacity and theoretical field capacity, expressed in percent
field efficiency
grains that have fallen to the ground due to the machine’s cutting operation
header loss
cutting mechanism consists of fixed lower knife and reciprocating upper knife wherein its movement is controlled by the crank connected to the gear box or belt drive
reciprocating cutter knife
machine that cuts and lays stalks of planted rice crop (see Figure 1)
rice reaper
cutting mechanism consists of planetary type circular saw-toothed blade which rotates at the same time with the pick-up triangular frame
rotary knife
computed rate of being able to reap palay in a given area per unit of time
theoretical field capacity
Field efficiency (%), minimum
65
Header loss (%), maximum
0.5
Conveying loss, (%), maximum
1.0
Total machine loss (%), maximum
1.5
Noise level, db(A), maximum
92*
The reaper shall be operated at the speed of ____. Mechanism for reverse speed should be provided for easy maneuverability.
3 kph to 5 kph
distance between two outermost divider h tips
cutting width
degree between the vertical line joining the center of the plant and the imaginary line where the stalk lodges
lodging angle
maximum yield per unit area
potential yield
Outside the long boundary of the test plot, two poles __ apart (A, B) are placed approximately in the middle of the test run (see Figure 3). On the opposite side also two poles are placed in similar position, ___ apart (C, D) so that all four poles form corners of a rectangle, parallel to at least one long side of the test plot. The speed will be calculated from the time required for the machine to travel the distance__between the assumed line connecting two poles on opposite sides AC and BD. The easily visible point of the machine should be selected for measuring the time.
20 m, 20 m, (20 m)
Before the test run, randomly select three 1 m x 1 m area within the test plot and manually harvest the panicles. The harvested panicles in each area shall be collected, labeled and taken to the laboratory.
Potential yield
Before the test run, five ____ area shall be taken at random within the test plot and the grains detached from the panicle within the area shall be collected weighed and recorded as pre-harvest loss. After the test run, using the same area, loose grains on ground, grains from cut panicles but fallen on the ground and grains from uncut panicles fallen on ground after harvesting, shall be collected, labeled and taken to the laboratory.
Header loss , 1 m x 1 m
A canvass shall be spread for a length of ___ on a place where cut stalks are expected to fall. Detached grains from the panicle shall be collected, labeled and taken to the laboratory. Five sets of sample shall be taken.
2 m
