Workshop Technology problems
- 1. In a gas welding of mild steel using an oxy-acetylene flame, the total amount of acetylene consumed is 10 litre. The oxygen consumption from the cylinder is
Options- A. 5 litre
- B. 10 litre
- C. 15 litre
- D. 20 litre Discuss
Correct Answer: 10 litre
- 2. The operation of cutting of a flat sheet to the desired shape is called
Options- A. shearing
- B. piercing
- C. punching
- D. blanking Discuss
Correct Answer: shearing
- 3. The mode of deformation of the metal during spinning is
Options- A. bending
- B. stretching
- C. rolling and stretching
- D. bending and stretching Discuss
Correct Answer: bending and stretching
- 4. 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
Correct Answer: either (a) or (b)
- 5. Cold working distorts grain structure and does not provide an appreciable reduction in size.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Correct
- 6. Hot piercing is extensively used for making bolts and nuts.
Options- A. Yes
- B. No Discuss
Correct Answer: No
- 7. 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 Discuss
Correct Answer: above the recrystallisation temperature
- 8. 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
Correct Answer: moistening the sand around the edge before removing pattern
- 9. 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
Correct Answer: flash butt welding
- 10. The acetylene cylinder is usually painted with
Options- A. black colour
- B. white colour
- C. maroon colour
- D. yellow colour Discuss
Correct Answer: maroon colour
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