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.
Workshop Technology MCQs
A hacksaw blade is specified by its
length
material
width
number of teeth
✅ The correct answer is option A.
The length of hacksaw blade is the distance between the outside edges of the holes which fits over the pins.
Agree
Disagree
✅ The correct answer is option A.
The metal patterns as compared to wooden patterns require less
shrinkage allowance
machining allowance
draft allowance
distortion allowance
✅ The correct answer is option C.
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.
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.
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.
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.
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.
The temperature of the inner luminous cone of neutral flame is about
1000° C
1250° C
2100° C
3200° C
✅ The correct answer is option D.