81. The directional solidification in casting can be improved by using
chills and chaplets
chills and padding
chaplets and padding
chills, chaplets and p
✅ The correct answer is option B.
Workshop Technology MCQs
82. The mode of deformation of the metal during spinning is
bending
stretching
rolling and stretching
bending and stretching
✅ The correct answer is option D.
83. Tandem drawing of wires and tubes is necessary because
it is not possible to reduce at one stage
annealing is needed between stages
accuracy in dimensions is not possible otherwise
surface finish improve
✅ The correct answer is option B.
84. The property of sand due to which the sand grains stick together, is called
collapsibility
permeability
cohesiveness
adhesiveness
✅ The correct answer is option C.
85. According to Indian standards, the total number of tolerance grades are
8
12
18
20
✅ The correct answer is option C.
86. If neutral flame is used in oxy-acetylene welding, both oxygen and acetylene cylinders of the same capacity will be emptied at the same time.
Correct
Incorrect
✅ The correct answer is option A.
87. In fore-hand welding, the angle between the welding torch and the work is __________ as compared to back-hand welding.
same
less
more
✅ The correct answer is option C.
88. The adhesiveness is the property of a sand due to which
it evolves a great amount of steam and other gases
the sand grains stick together
it cling to the sides of a moulding box
none of these
✅ The correct answer is option C.
89. The hot working of metals is carried out
at the recrystallisation temperature
below the recrystallisation temperature
above the recrystallisation temperature
at any temperature
✅ The correct answer is option C.
90. If the sand is too fine, its permeability will be high.
TRUE
FALSE
✅ The correct answer is option B.