Forming Mcqs on “Smith Forging Operations”.
1. Which of the following operations involves reduction in length?
a) Upsetting
b) Drawing down
c) Setting down
d) Punching
Answer: a
Clarification: There are a few operations, which are needed for a change of shape of the raw material to its finished form. This can be achieved using smith forging operation. Upsetting is one such operation that involves reduction in length for an increase the thickness.
2. Swaging is another name for which smith forging operation?
a) Bending
b) Punching
c) Drawing down
d) Cutting
Answer: c
Clarification: Swaging is another name for the operation drawing down. In drawing down operation, the length of the material is found to increase at an expense of the width or thickness of it.
3. Which of the following operations involves the reduction in length?
a) Upsetting
b) Drawing down
c) Setting down
d) Punching
Answer: b
Clarification: There are a few operations, which are needed for a change of shape of the raw material to its finished form. This can be achieved using smith forging operation. Drawing down is one such operation that involves increase in length at the cost of its thickness.
4. Which of the following material is not used as a flux in forge welding?
a) 2 parts of borax with one part of sal-ammoniac
b) Quartz sand
c) Calcined borax
d) 3 parts of borax with one part of sal-ammoniac
Answer: a
Clarification: The metal which has to be welded, has to be first covered with flux. By covering it with flux, it cuts the metal from the air around and prevents from oxidation. The fluxes used for this purpose are quartz sand, calcined borax and 3 parts of borax with one part of sal-ammoniac.
5. In which form of weld, are the ends joined?
a) Lap weld
b) Butt weld
c) Jump weld
d) Split weld
Answer: a
Clarification: In lap weld, the ends of the two metals which are to be joined are prepared for welding. In butt welding, the materials are butted are together. In split weld, the metals are kept like a fork in a ‘V’ shape.
6. Which form of weld is also called as ‘T’ weld?
a) Lap weld
b) Butt weld
c) Jump weld
d) Split weld
Answer: c
Clarification: In butt welding, the materials are butted are together. In jump welding, the two pieces are kept at an angle of 90o, in the form of an inverted ‘T’.
7. In cutting smith forging operation, up to what temperature is the steel heated?
a) 700°C – 800°C
b) 850°C – 950°C
c) 900°C – 1000°C
d) 1000°C – 1100°C
Answer: b
Clarification: Cutting is a form of smith forging operation, it is a form of chiseling. For chiseling, a long piece of metal is cut into equal lengths. These equal lengths need to be heated till they are cherry red hot, which makes it a temperature of 850°C to 950°C.
8. Which form of weld is also called as ‘V’ weld?
a) Lap weld
b) Butt weld
c) Jump weld
d) Split weld
Answer: d
Clarification: In butt welding, the materials are butted are together. In split weld, the metals are kept like a fork in a ‘V’ shape.
9. Scarfing is a preparation of metals for welding.
a) True
b) False
Answer: a
Clarification: The shaping of the metal pieces, in order they get united at the center, and a correct shape gets formed, the metal pieces need to be prepared for welding before they actually get welded. This preparation for welding of metals is termed as scarfing.
10. In bending, the layer on the inside gets shortened.
a) True
b) False
Answer: a
Clarification: Bending is a type of process that is most frequently used in forging. It can be done over the edge of the anvil face or the anvil horn. When the metal undergoes bending, the layer which is present on the inside gets shortened and the layer on the outside gets stretched.