A riddle is typically used to improve soil quality by allowing the gardener to sieve through soil and remove stones, twigs, large lumps of clay etc. and hence provide a finer tilth.
Riddles may also be used to help remove soil from harvested vegetables.
49) Riddle is used for
Answer is:
cleaning the molding sand
Explanation:
Related Workshop Technology MCQ with Answers
Answer is:
lifter
Explanation:
For smoothing and cleaning out depressions in the mould a Lifter is used.
A slick is used for repair and finishing the mould surface after the removal of pattern. It is a double ended tool having a spoon on one end and a flat on the other end.
A lifter is used for picking up the unwanted dust and damaged parts of the mould. It is a L- shaped steel tool with long holding shank and a small toe. It is available in thin sections of various width and lengths, according to the shape of the mould.
A swab is used for moistening the sand around the edge before the pattern is withdrawn. It consists of soft hair brush to hold water at one end, and a rubber build at the other end.
A gagger is used for reinforcing the moulding sand in the cope part of the moulding box. These are the iron rods or thick wires bent at one or both the ends. The bottom end of the gagger must be kept 5 to 8 mm away from the embedded pattern.
Answer is:
moistening the sand around the edge before removing pattern
Explanation:
Swab is a hemp fiber brush used for moistening the edges of sand mould, which are in contact with the pattern surface, before withdrawing the pattern.
It is also used for coating the liquid blacking on the mould faces in dry sand moulds.
Answer is:
ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
Explanation:
A jolt machine is used to Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould.
Answer is:
sand slinger
Explanation:
In order to produce uniform packing of sand in the moulds a Sand slinger is used.