Question

Arrange the following components of the grain combine harvester in the correct sequence as per the flow of materials, from the start of the operation through different components
A. Reel
B. Feeder conveyor
C. Platform augur
D. Straw walker
E. Threshing cylinder
Choose the correct answer from the options given below

• A. A-C-B-E-D
• B. B-A-C-E-D
• C. A-B-C-D-E
• D. B-A-C-D-E

Hint:

Remember the harvesting line: Reel $\rightarrow$ Cutter bar $\rightarrow$ Auger $\rightarrow$ Feeder $\rightarrow$ Cylinder $\rightarrow$ Straw walker $\rightarrow$ Cleaning shoe.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
A combine harvester performs harvesting, conveying, threshing, separating, and cleaning in a continuous sequence as crop material flows through its components.

Step 2: Detailed Explanation:
Tracing the material flow through a combine harvester:
1. Reel (A): Gathers standing crop and pushes it toward the cutter bar.
2. Platform Auger (C): Consolidates the cut crop from both sides toward the center feeder house.
3. Feeder Conveyor (B): Elevates and conveys the crop layer into the threshing unit.
4. Threshing Cylinder (E): Rubs and impacts crop against the concave to detach grain from ears.
5. Straw Walker (D): Agitates the threshed straw to separate residual entrapped grains.
The correct sequence is A $\rightarrow$ C $\rightarrow$ B $\rightarrow$ E $\rightarrow$ D.

Step 3: Final Answer:
Therefore, the correct sequence is A-C-B-E-D, corresponding to option (A).