Workshop Technology MCQ Questions & Answers | Mechanical Engineering

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16.
The purpose of a riser is to

A. Deliver molten metal into the mould cavity

B. Act as a reservoir for the molten metal

C. Feed the molten metal to the casting in order to compensate for the shrinkage

D. Deliver the molten metal from pouring basin to gate

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17.
Which of the following welding method uses a pool of molten metal?

A. Carbon arc welding

B. Submerged arc welding

C. TIG arc welding

D. MIG arc welding

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18.
A casting defect which occurs due to improper venting of sand is known as

A. Cold shuts

B. Blow holes

C. Shift

D. Swell

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19.
Which one of the following material will require the largest size of riser for the same size of casting?

A. Aluminium

B. Cast iron

C. Steel

D. Copper

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20.
A hacksaw blade is specified by its

A. Length

B. Material

C. Width

D. Number of teeth

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