Exercise: Workshop Technology

Questions for: Workshop Technology

The diaphragm moulding 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 packing of sand in the mould
D:
give uniform sand hardness throughout the mould
Answer: D
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Green sand is a mixture of
A:
30% sand and 70% clay
B:
50% sand and 50% clay
C:
70% sand and 30% clay
D:
90% sand and 10% clay
Answer: C
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The difference between the upper limit and lower limt of a dimension is called
A:
nominal size
B:
basic size
C:
actual size
D:
tolerance
Answer: D
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In order to produce uniform packing of sand in the moulds, a __________ is used.
A:
sand slinger
B:
squeezing machine
C:
jolt machine
D:
stripper plate machine
Answer: A
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When the dimension is expressed as , then the basic size is
A:
20 mm
B:
20.035 mm
C:
20.025 mm
D:
19.975 mm
Answer: A
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