Mechanical Engineering Objective Questions { Production Technology }

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211. The purpose of sprue is to

A. Feed the casting at a rate consistent with the rate of solidification

B. Act as a reservoir for molten metal

C. Help feed the casting until all solidification takes place

D. Feed molten metal from pouring basin to gate

212. The mould for casting ferrous materials in continuous casting process is made of

A. Low carbon steel

B. Medium carbon steel

C. High carbon steel

213. Sand slinger gives

A. Better packing of sand near pattern

B. Better packing of sand near the flask

C. Uniform sand density in th mould

D. None of the above

214. The trowel in a foundry shop is used to

A. Ram the moulding sand

B. Flatten and smoothen the sand during moulding operation

C. Blow excess sand

D. Repair corners in a mould

215. When using disposable pattern, the metal should be poured

B. Rather rapidly

C. At same rate as for other casting processes

216. The purpose of pouring basin is to

A. Feed the casting at a rate consistent with the rate of solidification

B. Act as a reservoir for molten metal

C. Help feed the casting until all solidification takes place

D. Feed molten metal from pouring basin to gate

217. Match plate pattern is used in

A. Green sand moulding

B. Bench moulding

C. Pit moulding

D. Machine moulding

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