Discussion
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- Question
The hot working of metals is carried out
Options- A. at the recrystallisation temperature
- B. below the recrystallisation temperature
- C. above the recrystallisation temperature
- D. at any temperature
- Correct Answer
- above the recrystallisation temperature
- 1. Hot piercing is extensively used for making bolts and nuts.
Options- A. Yes
- B. No Discuss
- 2. Cold working distorts grain structure and does not provide an appreciable reduction in size.
Options- A. Correct
- B. Incorrect Discuss
- 3. In TIG arc welding, the welding zone is shielded by an atmosphere of
Options- A. helium gas
- B. argon gas
- C. either (a) or (b)
- D. none of these Discuss
- 4. The mode of deformation of the metal during spinning is
Options- A. bending
- B. stretching
- C. rolling and stretching
- D. bending and stretching Discuss
- 5. The operation of cutting of a flat sheet to the desired shape is called
Options- A. shearing
- B. piercing
- C. punching
- D. blanking Discuss
- 6. Swab is used for
Options- A. smoothing and cleaning out depressions in the mould
- B. cleaning the moulding sand
- C. moistening the sand around the edge before removing pattern
- D. reinforcement of sand in the top part of the moulding box Discuss
- 7. The welding process used in joining mild steel shanks to high speed drills, is
Options- A. spot welding
- B. seam welding
- C. flash butt welding
- D. upset butt welding Discuss
- 8. The acetylene cylinder is usually painted with
Options- A. black colour
- B. white colour
- C. maroon colour
- D. yellow colour Discuss
- 9. The metal patterns as compared to wooden patterns require less
Options- A. shrinkage allowance
- B. machining allowance
- C. draft allowance
- D. distortion allowance Discuss
- 10. If an aluminium pattern made from a wooden master pattern is to be used for grey iron castings, then the shrinkage allowance allowed on the wooden pattern should be
Options- A. 10 mm/m
- B. 16 mm/m
- C. 20 mm/m
- D. 26 mm/m Discuss
Workshop Technology problems
Search Results
Correct Answer: No
Correct Answer: Correct
Correct Answer: either (a) or (b)
Correct Answer: bending and stretching
Correct Answer: shearing
Correct Answer: moistening the sand around the edge before removing pattern
Correct Answer: flash butt welding
Correct Answer: maroon colour
Correct Answer: draft allowance
Correct Answer: 26 mm/m
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