Engineering :: Foundry Technology

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151.

Permanent mould casting is also known as

A.	gravity die casting	B.	chill casting
C.	slush casting	D.	short casting

152.

The advantage of permanent mould casting is

A.	reduced labour charges	B.	reduced mould cost
C.	dense, fine grained structure	D.	all of the above

153.

The advantage of centrifugal casting is

A.	dense castings	B.	elimination of cores
C.	mass production with reduced rejection possible	D.	all of the above

154.

Which of the following metal can be cast in plaster moulds?

A.	Yellow brass	B.	Manganese
C.	Aluminium bronzes	D.	All of the above

155.

Investment casting is also known as

A.	lost wax casting	B.	lost pattern casting
C.	hot investment casting	D.	any of the above

156.

Which of the following is not necessarily the characteristic of investment casting?

A.	Extreme dimensional accuracy	B.	Excellent surface finish
C.	Low cost	D.	No disfiguring parting line as found on castings made by cope and drag methods

157.

The advantage of investment casting is

A.	Sound costings are produced	B.	Inricate shapes can be cast
C.	Close tolerances can be achieved	D.	All of the above

158.

Investment casting finds application in all of the following EXCEPT:

A.	Milling cutters	B.	Gold ornaments
C.	Jet engine nozzles	D.	Buckets for superchargers

159.

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

160.

Inoculants are added to aluminium mainly for

A.	grain refinement	B.	directional solidification
C.	purification	D.	all of the above