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WorksheetsManufacturing technology I
Total questions: 13
Worksheet time: 7mins
Sprue in casting refers to.......
gate
runner
riser
vertical passage
Which of the following pattern is used to produce a number of castings?
gatted pattern
match plate pattern
split pattern
loose piece pattern
The pattern used for mass production is
match plate pattern
split pattern
skeleton pattern
single plate pattern
Distortion allowance is not provided in the following shape of casting.
U
T
C
O
In casting, the amount of draft (in mm per metre) on exterior surfaces is about
10-20
20-30
30-40
40-50
The low permeability in sand can cause which of the following defects in casting
Blow holes
rough surface
hot tears
drop
Which of the following is not a type of core according to their position?
horizontal
vertical
inclined
balanced
Which of the following is true about riser?
i. It permits the molten metal to rise above the highest point in the casting.
ii. Filling up of mould cavity can be visually checked from it.
iii. The casting solidifies directionally towards the riser
i & ii
i & iii
only ii
i, ii, & iii
According to their use, which of the following is not a type of moulding sand?
green sand
dry sand
loam sand
wet sand
The function of cores in casting is to
form extended parts
form internal cavities
used for directional solidification
none of the above
Which of the following sand is applied directly next to the surface of the pattern?
parting sand
facing sand
loam sand
core sand
Green sand consists of
70% sand and 30% clay
40% sand and 60% clay
30% sand and 70% clay
60% sand and 40% clay
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