Engineering Materials Multiple Choice questions and Answers - Set 02 - ObjectiveBooks
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Engineering Materials Multiple Choice questions and Answers - Set 02

Practice Test: Question Set - 02


1. Thermosetting plastic is one,
    (A) Which softens when heated and hardens upon
    (B) Which once having cured by chemical reaction, does not soften or melt upon subsequent heating
    (C) Which can be moulded and remoulded repeated
    (D) Which has linear polymer chain

2. Mild 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

3. Steels used for automobile bodies and hoods are
    (A) Medium carbon steel
    (B) Mild steel
    (C) High carbon steel
    (D) Alloy steel

4. Material used for self-lubricated bearing is
    (A) Acetal
    (B) Polyurethane
    (C) Polytetrafluroethylene (Teflon)
    (D) Any one of above

5. Grey cast iron 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

6. Fibers used for fiber-reinforced-plastics are made of
    (A) Steel wires
    (B) Hemp
    (C) Glass and carbon
    (D) Asbestos

7. Wear resistance of steel is increased by adding, 
    (A) Nickel
    (B) Chromium
    (C) Sulphur
    (D) None of the above

8. A cast iron designated by FG300 is,
    (A) Grey cast iron with carbon content of 3%     
    (B) Grey cast iron with ultimate tensile strength of 300 N/mm2  
    (C) Grey cast iron with ultimate compressive strength of 300 N/mm2
    (D) Grey cast iron with tensile yield strength of 300 N/mm2

9. Steels used for helical springs are
    (A) Medium carbon steel
    (B) Mild steel
    (C) High carbon steel
    (D) Alloy steel

10. A cast iron designated by BM350 is,
    (A) Blackheart malleable cast iron with carbon content of 3.5%
    (B) Blackheart malleable cast iron with ultimate tensile strength of 350 N/mm2
    (C) Blackheart malleable cast iron with ultimate compressive strength of 350 N/mm2
    (D) Blackheart malleable cast iron with tensile yield strength of 350 N/mm2

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