Question

A jolt machine is used to

a.

ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

b.

ram the sand harder at the back of the mould and softer on the pattern face

c.

produce uniform sand hardness throughout the mould

d.

produce uniform packing of sand in the mould

Answer: (a).ram the sand harder at the pattern face with decreasing hardness towards the back of the mould

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Q. A jolt machine is used to

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