Workshop Technology
During hot working of metals

Porosity of the metal is largely eliminated
Grain structure of the metal is refined
All of the listed here
Mechanical properties are improved due to refinement of grains

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Workshop Technology
A progressive limit gauge has

None of the listed here
'Go' and 'Not go' member on the same side of the gauge
'Go' member at one end and 'Not go' member at the other end
Separate 'Go' and 'Not go' members

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Workshop Technology
The purpose of a gate is to

Delivers molten metal from pouring basin to gate
Feed the molten metal to the casting in order to compensate for the shrinkage
Act as a reservoir for the molten metal
Delivers molten metal into the mould cavity

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