Q. The diaphragm moulding machine is used to

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Q. A pattern is used to make the mould cavity for pouring the molten metal for casting.

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Q. The surface to be left unmachined is marked on the pattern by

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Q. The two rolls in a two high rolling mills are of __________ size.

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Q. The welding process used in joining mild steel shanks to high speed drills, is

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Q. The mode of deformation of the metal during spinning is

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Q. The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as

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Q. Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.

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Q. The process of increasing the cross-section of a bar at the expense of its length, is called

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Q. In TIG arc welding, the welding zone is shielded by an atmosphere of

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Q. The metal extrusion process is generally used for producing

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Q. The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.

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Q. In a gas welding of mild steel using an oxy-acetylene flame, the total amount of acetylene consumed is 10 litre. The oxygen consumption from the cylinder is

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Q. The sand used for making cores is

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Q. Sand wash is a casting defect which

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Q. Cold working distorts grain structure and does not provide an appreciable reduction in size.

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Q. Cast iron and steel pipes are produced by

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Q. The acetylene cylinder is usually painted with

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Q. In order to ram the sand harder at the back of the mould and softer on the pattern face, a __________ is used.

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Q. The property of sand due to which the sand grains stick together, is called

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