Question

Match the following hulling mechanisms (Column 1) with the corresponding machines (Column 2). 
\[ \begin{array}{|c|c|} \hline \textbf{Column 1} & \textbf{Column 2} \\ \hline \text{P: Shear and compression} & \text{1: Blade type emery scourer} \\ \text{Q: Friction and abrasion} & \text{2: Horizontal Gota machine} \\ \text{R: Shear, compression and friction} & \text{3: Rubber roll dehusker} \\ \text{S: Impact, abrasion and friction} & \text{4: Under runner disc sheller} \\ \hline \end{array} \]

• A. P-3, Q-2, R-4, S-1
• B. P-3, Q-1, R-2, S-4
• C. P-3, Q-1, R-4, S-2
• D. P-4, Q-3, R-1, S-2

Hint:

Understand the dominant force (shear, abrasion, impact) to match grain-processing machines correctly.

Answer 1

The Correct Option is A

P: Shear + compression → Rubber roll dehusker (3)
Rubber rolls apply shear while compressing the grain—classic dehusking action.
Q: Friction + abrasion → Horizontal Gota machine (2)
Gota machines rely primarily on abrasive and rubbing action.
R: Shear + compression + friction → Under runner disc sheller (4)
This machine uses discs that combine all three mechanisms.
S: Impact + abrasion + friction → Blade-type emery scourer (1)
Scourers use high-speed blades producing impact and abrasive rubbing.
Thus, \[ P-3,\; Q-2,\; R-4,\; S-1. \] Final Answer: (A)