151. Which of the following material can be used for making patterns ?
Aluminium
Wax
Lead
all of these
✅ The correct answer is option D.
Workshop Technology MCQs
152. The operation of cutting a sheet of metal in a straight line along the length, is known as
plunging
notching
slitting
forming
✅ The correct answer is option C.
153. The operation of cutting a number of holes evenly spaced in a regular pattern on a sheet of metal is. called perforating.
Agree
Disagree
✅ The correct answer is option A.
154. The algebraic difference between the maximum limit and the basic size is called
actual deviation
upper deviation
lower deviation
fundamental deviation
✅ The correct answer is option B.
155. The operation of straightening a curved sheet metal, is known as
drawing
squeezing
coining
planishing
✅ The correct answer is option D.
156. Riddle 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 B.
157. The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as
drawing
squeezing
coining
planishing
✅ The correct answer is option A.
158. The welding process used to join the ends of two pipes of uniform cross-section, is
spot welding
seam welding
projection welding
upset butt welding
✅ The correct answer is option D.
159. Sand wash is a casting defect which
results in a mismatching of the top and bottom parts of a casting
results in general enlargement of the casting
occurs near the ingates as rough lumps on the surface of a casting
occurs as sand patches
✅ The correct answer is option C.
160. In order to ram the sand harder at the back of the mould and softer on the pattern face, a __________ is used.
sand slinger
squeezing machine
jolt machine
stripper plate machine
✅ The correct answer is option B.