Mechanical Engineering Test Preparations On Workshop Technology Part 2
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Test Preparation on Mechanical Engineering Test Preparations On Workshop Technology Part 2
1.
For obtaining a cup of diameter 25 mm and height 15 mm by drawing, the size of the round blank should be approximately
1
42 mm
2
44 mm
3
46 mm
4
48 mm
2.
Cores are used to
1
form internal cavities in the casting
2
improve mould surface
3
form a part of a green sand mould
4
all of these
3.
During hot working of metals
1
poor surface finish is produced
2
scale is formed on the metal surface
3
close tolerances can not be maintained
4
all of these
4.
A jolt machine is used to
1
ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
2
ram the sand harder at the back of the mould and softer on the pattern face
3
produce uniform sand hardness throughout the mould
4
produce uniform packing of sand in the mould
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