What is the primary function of a length separator in seed processing?
A
To separate seeds based on weight
C
To separate seeds based on length
Analysis & Theory
Length separators sort seeds or particles based on their physical length.
Which machine is commonly used as a length separator?
Analysis & Theory
The indented cylinder separator is widely used for length separation in seed processing.
How does an indented cylinder separate seeds?
C
By trapping shorter seeds in indents and lifting them
Analysis & Theory
Shorter seeds fit into the indents of a rotating cylinder and are lifted and separated by gravity.
Longer seeds in an indented cylinder separator:
A
Remain in the cylinder and move forward
B
Are lifted and dropped out
Analysis & Theory
Longer seeds do not fit into the indents and continue along the cylinder's length to a separate outlet.
Indented cylinders are mainly used for separating:
A
Grains of similar density
B
Seeds by moisture content
C
Short weed seeds from crop seeds
Analysis & Theory
They are effective in removing short weed seeds or broken pieces from good quality crop seeds.
What determines the effectiveness of a length separator?
C
Indent size and rotation speed
Analysis & Theory
Indent size and cylinder rotation speed are key factors for proper separation based on seed length.
Which of the following crops is commonly processed using a length separator?
Analysis & Theory
Length separators are commonly used in rice processing to remove broken grains or weed seeds.
What is the main disadvantage of a length separator?
B
Limited power consumption
C
Ineffective for round seeds
Analysis & Theory
Round seeds or those with similar lengths are not efficiently separated in this system.
The capacity of a length separator depends mainly on:
B
Cylinder diameter and length
Analysis & Theory
The size (diameter and length) of the indented cylinder directly affects the separation capacity.
In a double-cylinder length separator setup:
B
Short and long seeds are separated in two stages
Analysis & Theory
Two cylinders allow for sequential separation of short, medium, and long seeds.