Discussion
Three of the following reduce grain damage. Which increases it?
Adding a further transfer point
Reducing drop heights
Using belt rather than screw conveyors
Lowering conveyor speeds
Answer: C
Correct answer: Adding a further transfer point
Each transfer point is an impact, and each impact breaks a further small percentage of kernels. Adding one therefore increases damage, and because the losses compound through a plant the effect on the final proportion of brokens is more than marginal.
The other three all reduce damage: shorter drops mean lower impact velocities, lower conveyor speeds mean gentler handling, and a belt is markedly kinder than a screw, which drags the product against the trough along the whole run.
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