Q. A taper provided on the pattern for its easy and clean withdrawl from the mould is known as

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Q. The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.

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Q. The fullers are used

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Q. The cold chisels are made by

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Q. The property of sand due to which it evolves a great amount of steam and other gases is called

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Q. The centrifugal casting method, is used for casting articles of

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Q. Galvanising is a

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Q. The ferrous metals require more machining allowance than non-ferrous metals.

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Q. In a four high rolling mill, there are four rolls out of which

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Q. When a pattern is made in three parts, the bottom part is known as a cope.

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Q. In __________ welding, the weld may be made either from left to right or from right to left.

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Q. Metal patterns are used for

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Q. The instrument which has all the features of try-square, bevel protractor, rule and scriber, is

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Q. When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.

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Q. The bloom is smaller than a billet.

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Q. In average work, the tolerance produced by investment casting method is

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Q. In order to cut mild steel, the cutting angle of chisel should be

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Q. The operation of straightening a curved sheet metal, is known as

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Q. The correct sequence for preparing a billet for extrusion process is pickling, alkaline cleaning, phosphate coating and lubricating with reactive soap.

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Q. Tandem drawing of wires and tubes is necessary because

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