Discussion
Grain carried out of the machine by the cleaning fan is known as _____ loss.
Answer: B
Correct answer: blown
Blown loss is grain carried out of the machine by the cleaning fan along with the chaff. It is controlled by fan speed and by the sieve settings.
The adjustment pulls directly against sample cleanliness: a stronger blast removes more light material and gives a cleaner sample, but takes more grain with it. Setting the shoe means finding the balance between blown loss and purity, and measuring both rather than judging by eye.
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