The GATE Grind

GATE 2023 AG – Question 17

Farm Machinery · Farm Machinery · 1 mark · Multiple choice

Thresher cylinder separation efficiency can be improved by increasing

  1. Cylinder diameter
  2. Cylinder speed
  3. Cylinder–concave clearance
  4. Feed rate

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Show answer and explanation

Correct answer: (B) Cylinder speed

Explanation

Greater cylinder speed increases impact and centrifugal action, helping detach and pass grain through the concave within the appropriate adjustment range. Wider clearance and higher feed rate can reduce separation. The intended adjustment is **cylinder speed, B**,while excessive speed can increase grain damage.

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