11. Lap joints are employed on plates having thickness
12. Thermit welding is often used in
13. Thread rolling is restricted to
14. When a pattern is made in three parts, the ________ is known as a drag.
15. Which of the following material can be used for making patterns?
16. The purpose of a riser is to
17. Which of the following welding method uses a pool of molten metal?
18. A casting defect which occurs due to improper venting of sand is known as
19. Which one of the following material will require the largest size of riser for the same size of casting?
20. A hacksaw blade is specified by its
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