Quiz

Question: Bell metal contains
Options:
A. 70% copper and 30% zinc
B. 90% copper and 10% tin
C. 85 - 92% copper and rest tin with little lead and nickel
D. 70 - 75% copper and rest tin
Answer: Option D
Explanation :

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Question 1. Which is false statement about normalizing? normalizing is done to
  1.     Refine grain structure
  2.     Reduce segregation in casting
  3.     Improve mechanical properties
  4.     Induce stresses
Answer: Option D
Explanation :
Question 2. Which is false statement about normalizing? normalizing is done to
  1.     Refine grain structure
  2.     Reduce segregation in casting
  3.     Improve mechanical properties
  4.     Induce stresses
Answer: Option D
Explanation :
Question 3. Bell metal contains
  1.     70% copper and 30% zinc
  2.     90% copper and 10% tin
  3.     85 - 92% copper and rest tin with little lead and nickel
  4.     70 - 75% copper and rest tin
Answer: Option D
Explanation :
Question 4. The aluminium alloy, mainly used, for anodized utensil manufacture, is
  1.     Duralumin
  2.     Y-alloy
  3.     Magnalium
  4.     Hindalium
Answer: Option D
Explanation :
Question 5. Malleable cast iron
  1.     Contains 1.7 to 3.5% carbon in Free State and is obtained by the slow cooling of molten cast iron
  2.     Is also known as chilled cast iron and is obtained by cooling rapidly. It is almost unmachinable
  3.     Is produced by annealing process. It is soft, tough, and easily machined metal
  4.     Is produced by small additions of magnesium (or cerium) in the ladle. Graphite is in the nodular or spheroidal form and is well dispersed throughout the material
Answer: Option C
Explanation :
Question 6. Chilled cast iron has
  1.     No graphite
  2.     A very high percentage of graphite
  3.     A low percentage of graphite
  4.     Graphite as its basic constituent of composition
Answer: Option A
Explanation :

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