In hot blast cupola
A.Temperature is high
B.Melting rate is high
C.Carbon percentage in castings is high
D.Air supplied is preheated
E.None of the above
Category: Production Engineering Mcqs
Usually the range of an instrument is selected such that
A.Minimum reading coincides with average value of working parameter
B.Minimum reading coincides with minimum value of the working parameter
C.For the working parameter the pointer direction is vertical
D.For the working parameter the pointer deflection is about ? of the full scale
The type of bearing suitable for high temperature applications where lubrication is impossible and where corrosion or chermical action limits choice of material, would be
A.Cast iron bearing
B.Jewel bearing
C.Needle bearing
D.Carbon graphite bearing
E.Aluminium bearing
Yellow colour on a pattern indicates
A.Surface to be left unmachined
B.Surface to be machined
C.Core prints
D.Seat for loose core prints
E.Fillets
Black broken lines on a pattern indicates
A.Surface to be left unmachined
B.Surfaces to be machined
C.Core prints
D.Seats for loose core prints
E.Fillets
Which one of the following methods is generally not used in welding of chromium molybdenum steels
A.Oxyacetylene
B.Submerged arc
C.Thermit
D.Resistance
The value of coefficient of friction expected in case of brake lining of steel wheel drum is
A.0.1
B.0.1 to 0.3
C.0.4 to 0.5
D.0.8 to 0.95
E.1
Weld spatter is
A.A flux
B.A filler material used in gas welding
C.A filler material used in soldering
D.An electrode used in inert atmosphere
E.A welding defect
Two 20 mm thick plates are to be gas welded. What size of welding rod should be selected out of the following rods available?
A.1.5 mm
B.3 mm
C.4.5 mm
D.6 mm
E.8 mm
In a 48A 100-H-8-S-BE grinding wheel the type of bond used is
A.Vitrified
B.Silicate
C.Resinoid
D.Rubber
E.Shellac
