Green sand moulds are
A.Green in colour
B.Painted with green paint
C.Made out of green coloured sand
D.Made from damp moulding sand
E.Skin dried moulds
Category: Production Engineering Mcqs
Core prints are provided to
A.Form trade mark of company on castings
B.Produce castings with specific surface design
C.Form seat to support and hold the core
D.Direct the flow of molten material during pouring
E.Reinforce the core to withstand the force of buoyancy of molten metal
Plain and butt welds may be used on materials upto approximately
A.25 mm thick
B.40 mm thick
C.50 mm thick
D.75 mm thick
E.100 mm thick
The purpose of using a core in moulding is
A.To produce chilled surface
B.To produce sound casting
C.To provide desired recesses in casting
D.To enable easy removal of pattern
E.To permit uniform flow of metal during moulding
Arc blow is a welding defect which is encountered
A.In arc welding using a.c. current
B.In arc welding using d.c. current
C.In gas welding
D.In thermit welding
E.In MIG welding
Shear angle varies with
A.Cutting speed
B.Feed
C.Depth of cut
D.Material of tool
E.Work piece materials and tool geometry
The moisture content of moulding sand generally varies from
A.2-8 percent
B.10-25 percent
C.25-40 percent
D.40-50 percent
E.50-65 percent
An important factor to be taken into account while designing a core print is
A.Pattern material
B.Type of mould
C.Moulding sand characteristics
D.Pouring temperature
E.Buoyancy effect of molten material
Which one of the following measuring instruments is supposed to be most accurate?
A.Steel scale
B.Micrometer
C.Vernier caliper
D.Vernier dial gauge
E.Optical projector
Large size bolt heads are made by
A.Hammering
B.Casting
C.Swaging
D.Upset-forging
E.Roll forging
