ExamVeda
Login
Home

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-9 section-2

Each section contains 100 MCQs on Workshop Technology .
81
The metal extrusion process is generally used for producing
Discuss
Answer & Solution
Answer: Option C
Solution:
The metal extrusion process is generally used for producing uniform solid and hollow sections.
Extrusion is a process used to create objects of a fixed cross-sectional profile.
A material is pushed through a die of the desired cross-section.
The extrusion process can be done with the material hot or cold.
82
The flux commonly used in brazing is
Discuss
Answer & Solution
Answer: Option D
Solution:
The flux commonly used in brazing is Borax
A flux is required for all brazing and soldering applications.
The purpose of the flux is to remove oxides from the base material and to prevent oxidation during the heating process, thus promoting the free flow of the brazing filler metal
83
The centrifugal casting method, is used for casting articles of
Discuss
Answer & Solution
Answer: Option B
Solution:
The centrifugal casting method, is used for casting articles of Symmetrical shape about horizontal axis
84
A casting defect which results in general enlargement of a casting is known as
Discuss
Answer & Solution
Answer: Option C
Solution:
A swell occurs when the mold wall gives way across a whole face, and is caused by an improperly rammed mold.
Burn-on occurs when metallic oxides interact with impurities in silica sands.
The result is sand particles embedded in the surface of the finished casting.
85
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as
Discuss
Answer & Solution
Answer: Option B
Solution:
A casting defect which occurs near the ingates as rough lumps on the surface of a casting is known as Sand wash
86
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
Discuss
Answer & Solution
Answer: Option C
Solution:
When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as Permanent mould casting method

87
Swab is used for
Discuss
Answer & Solution
Answer: Option C
Solution:
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.
88
The shrinkage allowance for cast iron pattern is
Discuss
Answer & Solution
Answer: Option A
Solution:
The shrinkage allowance for cast iron pattern is 10 mm/m
89
The advantage of thermit welding is that
Discuss
Answer & Solution
Answer: Option D
Solution:
Advantages of thermit welding is listed below:
• The weld formed has high mechanical strength.
• Excellent corrosion resistance as compared with other forms of weld.
• It is highly stable to repeated short circuit pulses.
• The electrical resistance remains unchanged over lifetime of the installation.
• All parts of the weld section are molten at the same time.
• Weld cools almost uniformly.
• Results in a minimum problem with internal residual stresses.
90
When the dimension is expressed as $$20_{ - 0.025}^{ + 0.035},$$  then the basic size is
Discuss
Answer & Solution
Answer: Option A
Solution:
When the dimension is expressed as $$20_{ - 0.025}^{ + 0.035},$$  then the basic size is 20 mm.