Workshop Technology problems
- 1. In piercing operation, the clearance is provided on
Options- A. punch
- B. die
- C. half on the punch and half on the die
- D. either on punch or die depending upon designer's choice Discuss
Correct Answer: die
- 2. The property of sand due to which the sand grains stick together, is called
Options- A. collapsibility
- B. permeability
- C. cohesiveness
- D. adhesiveness Discuss
Correct Answer: cohesiveness
- 3. According to Indian standard specifications, 100 H6/g 5 means that.
Options- A. basic size is 100 mm
- B. actual size is 100 mm
- C. difference between the actual size and basic size is 100 mm
- D. none of the above Discuss
Correct Answer: basic size is 100 mm
- 4. A pattern is used to make the mould cavity for pouring the molten metal for casting.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 5. In order to produce uniform packing of sand in the moulds, a __________ is used.
Options- A. sand slinger
- B. squeezing machine
- C. jolt machine
- D. stripper plate machine Discuss
Correct Answer: sand slinger
- 6. The oxidising flame is similar to neutral flame but the inner cone is less luminous and shorter.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 7. The temperature of the inner luminous cone of neutral flame is about
Options- A. 1000° C
- B. 1250° C
- C. 2100° C
- D. 3200° C Discuss
Correct Answer: 3200° C
- 8. In order to ram the sand harder at the back of the mould and softer on the pattern face, a __________ is used.
Options- A. sand slinger
- B. squeezing machine
- C. jolt machine
- D. stripper plate machine Discuss
Correct Answer: squeezing machine
- 9. The surface to be left unmachined is marked on the pattern by
Options- A. red colour
- B. yellow colour
- C. black colour
- D. blue colour Discuss
Correct Answer: black colour
- 10. The temperature produced by oxy-hydrogen flame is about
Options- A. 1800° C
- B. 2100° C
- C. 2400° C
- D. 3200° C Discuss
Correct Answer: 2400° C
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