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MATERIAL SCIENCE
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1) Which insulator is used in over head lines?
Mica
Rubber
P.V.C
Porcelain
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Correct Answer: Porcelain
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1) Which insulator is used in over head lines?
Mica
Rubber
P.V.C
Porcelain
2) Which insulating material is used for making switches?
Porcelain
PVC
Bakelite
Ebonite
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Correct Answer: Bakelite
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2) Which insulating material is used for making switches?
Porcelain
PVC
Bakelite
Ebonite
3) What is the name of the property of an insulation that should brake down or puncture on application of high voltage?
Di-electric strength
Specific resistance
Mechanical strenth
Non absorption
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Correct Answer: Di-electric strength
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3) What is the name of the property of an insulation that should brake down or puncture on application of high voltage?
Di-electric strength
Specific resistance
Mechanical strenth
Non absorption
4) Which alloy steel is using for making precious instrument?
Silicon steel
Manganese steel
Invar steel
Vanadium
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Correct Answer: Invar steel
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4) Which alloy steel is using for making precious instrument?
Silicon steel
Manganese steel
Invar steel
Vanadium
5) Which steel is used for making files and cold chisel?
Low carbon steel
Midium carbon steel
High carbon steel
Stainless steel
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Correct Answer: High carbon steel
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5) Which steel is used for making files and cold chisel?
Low carbon steel
Midium carbon steel
High carbon steel
Stainless steel
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