CM 3502 FINAL UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

CM 3502 FINAL UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS

Question:
1. the stress at which a materials behavior from elastic to plastic is what?
Answer:
yield strength

Question:
2. SSD stand for?
Answer:
saturated surface dry

Question:
3. (T/F) quenching steel generally increases hardness
Answer:
true

Question:
4. SAE classification for a steel with
1.75% Nickel, 1.00% Chromium and
0.10% Carbon?
Answer:
3210

Question:
5. Which ASTM designation is the steel used in pipe?
Answer:
A53 gr. B

Question:
6. Preferred ASTM steel designation for C sections?
Answer:
A36

Question:
7. SAE classification for a molybdenum-chromium nickel steel with .15% carbon.
Answer:
4315

Question:
8. describe the content of SAE classified steel 3430
Answer:
3% nickel, 0.8% chromium, 30% carbon.

, Question:
9. (T/F) Steel is stiffer than Portland Cement Concrete
Answer:
true

Question:
10. (T/F) Annealing steel generally increases toughness
Answer:
true

Question:
11. (T/F) High Strength Alloy Steels is typically stiffer than Mild Steel
Answer:
false

Question:
12. (T/F) toughness of an aggregate indicates its resistance to weathering
Answer:
false, soundness

Question:
13. (T/F) A rubber ball exhibits elastic behavior of a material
Answer:
true

Question:
14. (T/F) A viscoelastic material is not affected by temperature
Answer:
false, greatly affected

Question:
15. (T/F) Practically all materials expand when temperature increases (temp. decreases, material shrinks)
Answer:
true

Question:
16. Stress-Strain Diagram: Modulus of Elasticity- further right = ?Toughness- further right = ? Strength-
higher up = ? Brittleness- lower down = ?
Answer:
higher MOE, tougher, stronger, more brittle

Question:
17. Actual Weight of sample is equal to
42.7 lbs and our scale returns a value of 43 lbs, therefore this discrepancy indicates a lack of _______
Answer:
precision