3rd TSSA Part 3A1 - Unit 13 2025/2026 Exam Questions and Corresponding Answers with Surety of 100% Pass Mark

3rd TSSA Part 3A1 - Unit 13 2025/2026
Exam Questions and Corresponding
Answers with Surety of 100% Pass Mark



Cold working or welding of steel tends to develop unequal, internal stresses

that should be relieved by:

1. Re-welding

2. Hot working

3. Heat treating

4. Stress relieving


5. Annealing - 🧠ANSWER ✔✔3, 4, 5


Impurities in steel, such as sulphur and phosphorus, reduce the:

1. Stresses in the steel

2. Ductility of the steel

3. Malleability of the steel

4. Weight of the steel

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, 5. Porosity of the steel

6. Welding qualities of the steel


7. Carbon content of the steel - 🧠ANSWER ✔✔2, 3, 6


A material that does not have ductility will be: - 🧠ANSWER ✔✔Brittle


A tensile test is performed by subjecting the specimen to a/an: - 🧠ANSWER

✔✔Stretching type load


Cast iron is produced, by melting pig iron together with: - 🧠ANSWER

✔✔Scrap iron


Materials that can be hammered or rolled into shape without breaking are: -

🧠ANSWER ✔✔Malleable


Cast iron contains ________ percent carbon. - 🧠ANSWER ✔✔2-4%


An example of a brittle material is: - 🧠ANSWER ✔✔Cast iron


The terms "notch-toughness" and "notch-sensitivity":

1. Indicate the danger of brittle failure

2. Are related to a Charpy Test

3. Apply to the Rockwell Hardness Test

COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
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