Question

During tensile tests on mild steel specimens, the following points are observed:
(A) Elastic limit
(B) Proportionality limit
(C) Yield Point
(D) Fracture point
Choose the correct sequence of observation after the application of loading:

• A. (A), (B), (C), (D)
• B. (A), (C), (B), (D)
• C. (B), (A), (C), (D)
• D. (C), (B), (D), (A)

Hint:

The order of events in a tensile test starts with the proportionality limit, followed by the elastic limit, yield point, and finally the fracture point.

Answer 1

The Correct Option is A

Step 1: Understand the sequence of observations in a tensile test.
- Proportionality limit is the first point where stress and strain are directly proportional (Hooke’s Law).
- Elastic limit is the point beyond which the material no longer behaves elastically.
- Yield point is where permanent deformation starts.
- Fracture point is where the material ultimately breaks.
Step 2: Conclusion The correct sequence of observation after loading is (A), (B), (C), (D). Final Answer: \[ \boxed{(A), (B), (C), (D)} \]