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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-2

Each section contains 100 MCQs on Workshop Technology .
31
When more volume of acetylene and less volume of oxygen is supplied, then a ________ flame is obtained.
Discuss
Answer & Solution
Answer: Option C
Solution:
When more volume of acetylene and less volume of oxygen is supplied, then a Carburizing flame is obtained.
Carburizing flame is one with little oxygen, which produces a sooty, lower-temperature flame. It is often used to anneal metal, making it more malleable and flexible during the welding process.
32
In permanent mould casting method
Discuss
Answer & Solution
Answer: Option D
Solution:
Permanent mold casting is a metal casting process that employs reusable molds , usually made from metal.
The most common process uses gravity to fill the mold, however gas pressure or a vacuum are also used.
33
Cutting and forming operations can be performed in a single operation in a
Discuss
Answer & Solution
Answer: Option D
Solution:
It is difficult from compound die in that in this die, a cutting operation is combined with a bending or drawing operation, due to that it is called combination die
34
The process of decreasing the cross-section of a bar and increasing its length, is called
Discuss
Answer & Solution
Answer: Option A
Solution:
The process of decreasing the cross-section of a bar and increasing its length, is called Drawing down
35
The process of increasing the cross-section of a bar at the expense of its length, is called
Discuss
Answer & Solution
Answer: Option B
Solution:
The process of increasing the cross-section of a bar at the expense of its length is known as upsetting.
Upsetting involves squeezing the billet between two flat- surfaces, thus reducing its height due to the increase in the cross-sectional area.
36
The cold working of metals is carried out
Discuss
Answer & Solution
Answer: Option B
Solution:
Cold Working: Plastic deformation of metals below the recrystallization temperature is known as cold working.
It is generally performed at room temperature.
In some cases, slightly elevated temperatures may be used to provide increased ductility and reduced strength.
37
The hot working of metals is carried out
Discuss
Answer & Solution
Answer: Option C
Solution:
Hot working process metals are plastically deformed above their recrystallization temperature.
Being above the recrystallization temperature allows the material to recrystallize during deformation.
38
In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. The oxygen consumption from the cylinder is
Discuss
Answer & Solution
Answer: Option B
Solution:
In a gas welding of mild steel using an oxyacetylene flame, the total amount of acetylene consumed is 10 litres. The oxygen consumption from the cylinder is 10 liters
39
Which of the following welding process uses non-consumable electrodes?
Discuss
Answer & Solution
Answer: Option A
Solution:
Gas tungsten arc welding (GTAW), or tungsten/inert-gas (TIG) welding, is a manual welding process that uses a non-consumable electrode made of tungsten, an inert or semi-inert gas mixture, and a separate filler material.
40
The oxyacetylene gas used in gas welding produce a flame temperature of
Discuss
Answer & Solution
Answer: Option D
Solution:
The oxyacetylene gas used in gas welding produce a flame temperature of 3200°C