51. A file removes the metal during
forward stroke
return stroke
both forward and return strokes
none of these
✅ The correct answer is option A.
Workshop Technology MCQs
52. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be
10 mm/m
16 mm/m
20 mm/m
26 mm/m
✅ The correct answer is option D.
53. The oxy-acetylene gas used in gas welding produce a flame temperature of
1800°C
2100°C
2400°C
3200°C
✅ The correct answer is option D.
54. Rotary swaging
is extensively used for making bolts and rivets
is used for reducing the diameters of round bars and tubes by rotating dies which open and close rapidly on the work
is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
consists of pressing t
✅ The correct answer is option B.
55. For welding plates of thickness less than 5 mm, its edges
do not require bevelling
should be bevelled to a single-V or U-groove
should have a double-V or U-groove on one side
should have a double-V
✅ The correct answer is option A.
56. The metal patterns as compared to wooden patterns require less
shrinkage allowance
machining allowance
draft allowance
distortion allowance
✅ The correct answer is option C.
57. In back-hand welding, the angle between the welding rod and the work is __________ as compared to fore-hand welding.
same
less
more
✅ The correct answer is option A.
58. The process extensively used for making bolts and nuts is
hot piercing
extrusion
cold peening
cold heading
✅ The correct answer is option D.
59. Swab is used for
smoothing and cleaning out depressions in the mould
cleaning the moulding sand
moistening the sand around the edge before removing pattern
reinforcement of sand
✅ The correct answer is option C.
60. A hacksaw blade is specified by its
length
material
width
number of teeth
✅ The correct answer is option A.