Q. The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)

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Q. For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately

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Q. Cores are used to

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Q. The drawing down is a process of __________ the cross-section of a bar.

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Q. During hot working of metals

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Q. When a pattern is made in three parts, the __________ is known as a drag.

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Q. Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions.

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Q. The shrinkage allowance for cast iron pattern is

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Q. An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.

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Q. A neutral flame is obtained by supplying

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Q. An oxidising process used for aluminium and magnesium articles is called

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Q. For welding plates of thickness less than 5 mm, its edges

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Q. In order to check the clearance between two mating surfaces, a __________ gauge should be used.

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Q. When the weld is made from left to right, it is known as back-hand welding.

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Q. The current in electric resistance welding can be regulated by

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Q. In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted.

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Q. A mortise gauge is a

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Q. In spot welding, the spacing between two spot weld should not be less than

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Q. Aluminium is the best material for making patterns because it is

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Q. Gagger is used for cleaning the moulding sand.

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