Question

Match the following with reference to the machining process and its feature. 

• A. \( P \to 3, Q \to 4, R \to 1, S \to 2 \)
• B. \( P \to 4, Q \to 3, R \to 2, S \to 1 \)
• C. \( P \to 4, Q \to 2, R \to 1, S \to 3 \)
• D. \( P \to 1, Q \to 3, R \to 2, S \to 4 \)

Hint:

When matching processes with their features, consider the nature of the machining process and its typical applications to make the correct match.

Answer 1

The Correct Option is A

Let us match each process with the appropriate feature:
EDM (P): EDM stands for Electrical Discharge Machining, which is primarily used for machining deep and precise features such as blind holes on mild steel plates. Therefore, the feature associated with EDM is "Machining of a deep square blind hole on a mild steel plate" (Feature 3).
LBM (Q): LBM stands for Laser Beam Machining, which is used for high-precision cutting and can be employed for cutting edible items, especially in the food processing industry. Hence, the feature for LBM is "Cutting edible items" (Feature 2).
CHM (R): CHM stands for Chemical Machining, where loss of dimensional accuracy due to undercutting is a common issue. This matches with "Loss of dimensional accuracy due to under cutting" (Feature 1).
WJM (S): WJM stands for Water Jet Machining, which is widely used for high-speed cutting, particularly for profile cutting on thin materials. Thus, the correct feature is "High speed profile cutting on a thin mild steel plate" (Feature 4).
So, the correct matching is:
\[ P \to 3, Q \to 4, R \to 1, S \to 2. \]