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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Q. The temperature produced by oxy-hydrogen flame is about

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

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Q. A casting defect which occurs due to improper venting of sand is known as

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Q. Swab is used for

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Q. The temperature of the inner luminous cone of neutral flame is about

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Q. The metal patterns as compared to wooden patterns require less

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Q. In blanking operation, the clearance is provided on

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Q. In piercing operation, the clearance is provided on

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Q. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be

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Q. For arc welding

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Q. When the file is moved to and fro over the work, it is known as

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Q. The hot working of metals is carried out

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Q. In a four high rolling mill, the diameter of backing up rolls is __________ the diameter of working rolls.

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Q. The welding process used to join the ends of two pipes of uniform cross-section, is

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Q. When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as

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Q. Hot piercing is extensively used for making bolts and nuts.

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Q. For gas welding, the pressure desired at the welding torch for oxygen is

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Q. Seam weiding is a

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