MATERIAL SCIENCE - Practice Mode

1) Which insulator is used in over head lines?
Correct Answer: Porcelain
2) Which insulating material is used for making switches?
Correct Answer: Bakelite
3) What is the name of the property of an insulation that should brake down or puncture on application of high voltage?
Correct Answer: Di-electric strength
Explanation:

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4) Which alloy steel is using for making precious instrument?
Correct Answer: Invar steel
5) Which steel is used for making files and cold chisel?
Correct Answer: High carbon steel