Engineering Materials MCQ Practice Test - Set 01 - ObjectiveBooks
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Engineering Materials MCQ Practice Test - Set 01

Practice Test: Question Set - 01


1. Steels used for welded assemblies are
    (A) Medium carbon steel
    (B) Mild steel
    (C) High carbon steel
    (D) Alloy steel

2. Material used for bearing bushes is
    (A) Phosphor bronze
    (B) Gunmetal
    (C) Babbitt
    (D) Any one of above

3. Hardness of steel is increased by adding,
    (A) Chromium
    (B) Molybdenum
    (C) Tungsten
    (D) All of above elements

4. Plain carbon steel designated by 40C8 means,
    (A) Plain carbon steel with ultimate tensile strength of 400 N/mm2 and 0.8% carbon
    (B) Plain carbon steel with 0.35 to 0.45% carbon and 0.7to 0.9% manganese  
    (C) Plain carbon steel with 0.8% carbon and 4 % manganese
    (D) Plain carbon steel with 40% carbon and 8% manganese

5. Synthetic rubber is used for 
    (A) V-belt
    (B) Gasket
    (C) Seals
    (D) All three parts

6. Which of the following materials has maximum strength?
    (A) Grey cast iron
    (B) Plain carbon steel
    (C) Alloy steel
    (D) Aluminium alloy

7. Toughness of steel is increased by adding, 
    (A) Nickel
    (B) Chromium
    (C) Sulphur
    (D) Tungsten

8. Plain carbon steels are designated by,
    (A) Tensile strength
    (B) Carbon content
    (C) Composition of alloying element
    (D) None of the above

9. Which of the following materials has maximum ductility?
    (A) Grey cast iron
    (B) Mild steel
    (C) Alloy steel
    (D) High carbon steel

10. Medium carbon steel contains
    (A) Less than 0.3% carbon
    (B) 0.3 to 0.5% carbon
    (C) 0.5 to 1.4% carbon
    (D) 3 to 4% carbon

11. Hardness of steel is increased by adding,
    (A) Nickel
    (B) Molybdenum
    (C) Sulphur
    (D) None of above

12. In free cutting steels, important alloying element is
    (A) Nickel
    (B) Chromium
    (C) Sulphur
    (D) Tungsten

13. Material used for machine tool beds is
    (A) Cast iron
    (B) Mild steel
    (C) High carbon steel
    (D) Alloy steel

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