The disadvantage in using wood as the material for pattern making is
A.its low cost
B.its different strength along the grains and across the grains
C.it gets warped when not stored properly
D.it is lighter than the metal to be cast
Category: Foundry Technology Mcqs
Investment casting can be used for which of the following alloys:
A.cobalt based satellite
B.Tool steels
C.Hynes super alloys
D.All of the above
Non-uniform distribution of alloying components, inclusions and impurities in an ingot or casting are known as
A.segregation
B.ageing
C.innoculation
D.bleeding
The draft allowance to be provided on a pattern depends on
A.the length of the vertical side of the pattern to be extracted
B.the intricacy of the pattern
C.the method of moulding
D.all of the above
Refractoriness in the moulding sand is due to the presence of
A.Clay
B.Silica
C.Additives and Binders
Which of the following process is used for melting of steel?
A.L D process
B.Kaldo process
C.Duplex process
D.All of the above
Heating of core is necessary while using which of the following core binder?
A.Phenol formaldehyde resin
B.Phenolic alcohols
C.Furan-base binder
D.All of the above
Electric indirect are furnace is normally used for melting of
A.alloy steels
B.cast steels
C.non-ferrous metals
D.all of the above
Electric furnaces can usually operate upto a temperature of
A.1000?C
B.1250?C
C.1700?C
D.2200?C
Die casting is generally not used for
A.zinc base alloys
B.aluminium base alloys
C.non-ferrous metals
D.cast iron
