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MCQs

Total Questions : 1535 | Page 2 of 154 pages
Question 11. Age hardening is related to
  1.     Duralumin
  2.     Brass
  3.     Copper
  4.     Silver
 Discuss Question
Answer: Option A. ->  Duralumin
Explanation :
Question 12. Constantan an alloy used in thermocouples is an alloy of
  1.     Copper and tin
  2.     Copper and zinc
  3.     Copper and iron
  4.     Copper and nickel
 Discuss Question
Answer: Option D. ->  Copper and nickel
Explanation :
Question 13. Which of the following statement is correct?
  1.     The product produced by blast-furnace is called cast iron
  2.     The pig iron is the name given to the product produced by cupola
  3.     The cast iron has high tensile strength
  4.     The chilled cast iron has no graphite
 Discuss Question
Answer: Option D. ->  The chilled cast iron has no graphite
Explanation :
Question 14. Which of the following is the binding material in cemented carbides?
  1.     Cobalt
  2.     Nickel
  3.     Vanadium
  4.     Iron
 Discuss Question
Answer: Option A. ->  Cobalt
Explanation :
Question 15. 1841 high speed steel contains
  1.     Vanadium 4%, chromium 18% and tungsten 1%
  2.     Vanadium 1%, chromium 4% and tungsten 18%
  3.     Vanadium 18%, chromium 1% and tungsten 4%
  4.     None of the above
 Discuss Question
Answer: Option B. ->  Vanadium 1%, chromium 4% and tungsten 18%
Explanation :
Question 16. Heavy duty leaf and coil springs contain carbon of the following order
  1.     0.2%
  2.     0.5%
  3.     0.8%
  4.     1.0%
 Discuss Question
Answer: Option D. ->  1.0%
Explanation :
Question 17. Admiralty brass used for steam condenser tubes contains copper and zinc in the following ratio
  1.     50 : 50
  2.     30 : 70
  3.     70 : 30
  4.     40 : 60
 Discuss Question
Answer: Option B. ->  30 : 70
Explanation :
Question 18. Cobalt in steel
  1.     Improves wear resistance, cutting ability and toughness
  2.     Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties
  3.     Improves cutting ability and reduce hardenability
  4.     Gives ductility, toughness, tensile strength and anti corrosion property
 Discuss Question
Answer: Option C. ->  Improves cutting ability and reduce hardenability
Explanation :
Question 19. Malleability of a material can be defined as
  1.     Ability to undergo large permanent deformations in compression
  2.     Ability to recover its original form
  3.     Ability to undergo large permanent deformations in tension
  4.     All of the above
 Discuss Question
Answer: Option A. ->  Ability to undergo large permanent deformations in compression
Explanation :
Question 20. Muntz metal contains copper and zinc in the ratio of
  1.     50 : 50
  2.     40 : 60
  3.     60 : 40
  4.     20 : 80
 Discuss Question
Answer: Option C. ->  60 : 40
Explanation :

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