88554. Which one of the following material will require the largest size of riser for the same size of casting?
88555. The consumable electrode is used in
88556. The operation of cutting a sheet of metal in a straight line along the length, is known as
88557. Forming is the operation of removing metal to the desired shape from the edge of a plate.
88558. Cold working of metal increases
88559. In welding aluminium with TIG arc welding, alternating current is used.
88560. Linde welding uses
88561. The purpose of a gate is to
88562. When two pieces of different metals are to be welded by projection welding, then the projection should be made on the metal piece having __________ conductivity.
88563. The vertical welding do not require plate edge preparation upto 16 mm thickness.
88564. The dowels are
88565. In arc welding, the temperature of heat produced by the electric arc is of the order of
88566. Extrusion
88567. The operation of cutting of a flat sheet to the desired shape is called
88568. The process of decreasing the cross-section of a bar and increasing its length, is called
88569. A casting defect which occurs due to improper venting of sand is known as
88570. Swab is used for
88571. The temperature of the inner luminous cone of neutral flame is about
88572. The metal patterns as compared to wooden patterns require less
88573. When the dimension is expressed as , then the basic size is
88574. In order to produce uniform packing of sand in the moulds, a __________ is used.
88575. The difference between the upper limit and lower limt of a dimension is called
88576. Green sand is a mixture of
88577. The diaphragm moulding machine is used to
88578. A pattern is used to make the mould cavity for pouring the molten metal for casting.
88579. The surface to be left unmachined is marked on the pattern by
88580. The two rolls in a two high rolling mills are of __________ size.
88581. The welding process used in joining mild steel shanks to high speed drills, is
88582. The mode of deformation of the metal during spinning is
88583. The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as
88584. Fin is a casting defect which is due to thin projections of metal not intended as a part of casting.
88585. The process of increasing the cross-section of a bar at the expense of its length, is called
88586. In TIG arc welding, the welding zone is shielded by an atmosphere of
88587. The metal extrusion process is generally used for producing
88588. The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.
88589. 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
88590. The sand used for making cores is
88591. Sand wash is a casting defect which
88592. Cold working distorts grain structure and does not provide an appreciable reduction in size.
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