Workshop Technology Questions

• When a pattern is made in three parts, the __________ is known as a drag.
• Aluminium is the best material for making patterns because it is
• Scab is a casting defect which occurs as sand patches on the upper surface of a casting.
• In bending operation, the metal takes the shape of a punch.
• Carburising flame is used to weld
• Lancing is the operation of
• For welding plates of thickness more than 12.5 mm, its edges
• A pouring basin acts as a reservoir for the molten metal.
• In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted.
• In electric resistance welding, voltage required for heating is
• Cores are used to
• For welding plates of thickness less than 5 mm, its edges
• Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions.
• Tandem drawing of wires and tubes is necessary because
• In sheet metal work, the cutting force on the tool can be reduced by
• An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.
• Which of the following statement is wrong?
• The drawing down is a process of __________ the cross-section of a bar.
• During hot working of metals
• A jolt machine is used to