Q. Lancing is the operation of

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Q. Notching is the operation of

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Q. In a unilateral system of tolerance, the tolerance is allowed on

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Q. A two high rolling mill consists of two rolls which rotate

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Q. Carburising flame is used to weld

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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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