Workshop Technology Questions

• Spot welding is used for welding
• The directional solidification in casting can be improved by using
• In tungsten-inert gas arc welding, a __________ electrode is used.
• The minimum size of a billet is 10 cm x 10 cm.
• The cold chisels are made from
• The casting method adopted for ornaments and toys of non-ferrous alloys, is
• In welding magnesium with TIG arc welding, direct current with __________ is used.
• Thermit welding is often used in
• Structural sections such as rails, angles, I-beams are made by
• For gas welding, the presure desired at the welding torch for acetylene is
• The metal is subjected to mechanical working for
• In a cold chamber die casting machine
• The most preferred process for casting gas turbine blades is
• A sand employed on the faces of the pattern before moulding, is called
• A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
• The torch used for oxygen cutting is same as for oxy-acetylene welding.
• Loam sand is a mixture of
• In a cold chamber die casting machine, a measured quantity of molten metal is brought in a ladle from the melting pot to a chamber and forced into the closed die-section by applying hydraulic pressure upon the plunger.
• The operation of cutting a cylindrical hole in a sheet of metal by the punch and die is called
• The minimum size of a bloom is