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Workshop Technology MCQ Questions & Answers | Mechanical Engineering

Learn Workshop Technology MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Workshop Technology MCQ question is the important chapter for a Mechanical Engineering and GATE students. Page-4 section-1

Each section contains 100 MCQs on Workshop Technology .
31
Thermit, used in Thermit welding, is a mixture of
Discuss
Answer & Solution
Answer: Option C
Solution:
Thermit which is used in Thermit welding is a mixture of Iron oxide and aluminium
32
For smoothing and cleaning out depressions in the mould, a ________ is used.
Discuss
Answer & Solution
Answer: Option B
Solution:
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A swab is used for moistening the sand around the edge before the pattern is withdrawn.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.
33
In order to produce uniform packing of sand in the moulds, a _________ is used.
Discuss
Answer & Solution
Answer: Option A
Solution:
In order to produce uniform packing of sand in the moulds a Sand slinger is used.
34
In order to ram the sand harder at the back of the mould and softer on the pattern face, a ________ is used.
Discuss
Answer & Solution
Answer: Option B
Solution:
In a squeeze machine, there is a squeezer head or a plate which is used as a pressing board to force the sand inside or compress it.
This machine is mostly used for shallow patterns.
These machines are classified as, squeeze machine, sand slinger, jolt-squeeze machine and sand slinger.
35
When a hole or cavity to be cored is not in line with the parting surface, then a ________ is used.
Discuss
Answer & Solution
Answer: Option C
Solution:
When a hole or cavity to be cored is not in line with the parting surface, then a drop core is used.
36
In order to deliver molten metal from pouring basin to gate, a ________ is used.
Discuss
Answer & Solution
Answer: Option B
Solution:
In casting, a sprue is the passage through which a molten material is introduced into a mold, and the term also refers to the excess material which solidifies in the sprue passage.
In sand casting, the sprue is formed by a dowel, which is removed from the sand to make the hole into which the metal is poured.
37
In welding magnesium with TIG arc welding, direct current with ________ is used.
Discuss
Answer & Solution
Answer: Option B
Solution:
In welding magnesium with TIG arc welding, direct current with Reversed polarity is used
The preferred polarity of the GTAW system depends largely on the type of metal being welded.
38
For welding plates of thickness more than 12.5 mm, its edges
Discuss
Answer & Solution
Answer: Option D
Solution:
For welding plates of thickness more than 12.5 mm, its edges Should have a double-V or U-groove on both sides
39
A rip saw
Discuss
Answer & Solution
Answer: Option B
Solution:
A rip saw is a wood saw that is specially designed for making a rip cut, a cut made parallel to the direction of the wood grain.
40
A jolt machine is used to
Discuss
Answer & Solution
Answer: Option A
Solution:
A jolt machine is used to Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould