Which of the following grain cleaners/separators utilize difference in grain dimensions for separation?
Options:
(A) Indented cylinder separator (length grader)
(B) Spiral separator (shape grader)
(C) Pneumatic aspirator (aerodynamic separator)
(D) Specific gravity separator (density grader)
Answer Key:
A, B
Step-by-Step Solution & Explanation
Separators operating on geometrical dimensions/shape:
• Indented cylinder / disc separator separates on the basis of kernel length (A).
• Spiral separator separates on the basis of roundness/shape (B).
Aspirators separate on terminal velocity/aerodynamics (C), and specific gravity tables separate on bulk/particle density (D).