A true b false view answer 10 continuously cast

a) True
b) False
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10. Continuously cast products in the continuous casting show very less segregation.
a) True
b) False
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11. Which of the following is used for the reduction of friction between the mould’s surface
and metal strand?
a) Water
b) Casting powder
c) Oil
d) Grease
View Answer
Answer: b
10. Which of the following factors is not considered for the determination of pressure level in
the squeeze casting?
a) Shape of the casting
b) Fluidity of the alloy
c) Freezing range of alloy

d) Moulding material
View Answer
Answer: d
7. Which of the following methods of casting is also known as the liquid metal forging?
a) Die casting
b) Continuous casting
c) Permanent mould casting
d) Squeeze casting
View Answer
Answer: d
3. What should be the range of pressure (in MPa) under which molten metal is pressed to
form the castings by squeeze casting method?
a) 10 to 50
b) 50 to 140
c) 140 to 240
d) 240 to 300
View Answer
Answer: b
11. Which of the following moulds is used in slush casting, in which mould is broken to
remove the castings?
a) Copper mould
b) Iron mould
c) Bronze mould
d) Zinc mould
View Answer
Answer: c
1. Which of the following moulds or moulding is also known as sodium silicate process.
a) Shell moulding
b) Permanent moulding
c) Slush moulding
d) Co
2
moulding
View Answer
Answer: d
3. How much percentage of sodium silicate (Na
2
SiO
3
) is added to the sand mixture in
Co
2
moulding?
a) 0 to 2 %
b) 2 to 6 %
c) 6 to 10 %
d) 10 to 14 %
View Answer
Answer: b
5. How much time (in a minute) is usually required for the passing of Co
2
through the
mould?

a) One
b) Two
c) Five
d) Seven
View Answer
Answer: a
9. Which of the following additives are added to the sand in Co
2
moulding for the
improvement in collapsibility of the sand?
a) Copper oxide
b) Wood flour
c) Aluminium oxide
d) Oil
View Answer
Answer: c
3. Which of the following is not part of an integrated management system in the production
of casting?
a) Quality of production
b) Protection of environment
c) Casting yield
d) Safety in working conditions
View Answer
Answer: c
Explanation: The quality of production, protection of environment, safety and protection of
humans and machines in working conditions are integral part of management system.
Integrated management system is the system which integrates management systems into
one continuous system. Casting yield is another concept which does not considered in
integrated management system.
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4. The defects in the castings are majorly caused by the surrounding environmental
conditions.
a) True
b) False
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5. The decision for rejection or replacement of casting is majorly considered with respect to
the functioning of casting instead of defects in the castings.
a) True
b) False
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6. Varieties or non-standardizing in the production of castings gives more safety and
protection from the defects.
a) True
b) False
View Answer
7. Defects like sand inclusion in the metal casting can lead to rejection of the whole casting.