Discussion
Assertion (A): A spiral separator consumes no power.
Reason (R): It has no moving parts, material descending under gravity alone.
Select the correct answer from the options below.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both are true and the reason gives the cause. A spiral separator is simply a helical chute: round seeds accelerate as they roll and are thrown outward over the edge into an outer collector, while flat or irregular ones slide and stay on the inner track. Nothing moves but the material, so there is no motor and nothing to wear.
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