Discussion
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- Question
Which one of the following material will require the largest size of riser for the same size of casting?
Options- A. Aluminium
- B. Cast iron
- C. Steel
- D. Copper
- Correct Answer
- Steel
- 1. A basic hole is one whose
Options- A. lower deviation is zero
- B. upper deviation is zero
- C. lower and upper deviations are zero
- D. none of these Discuss
- 2. Riddle 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 moulding box Discuss
- 3. The purpose of a gate is to
Options- A. deliver molten metal into the mould cavity
- B. act as a reservoir for the molten metal
- C. feed the molten metal to the casting in order to compensate for the shrinkage
- D. deliver molten metal from pouring basin to gate Discuss
- 4. During drawing operation, the states of stress in cup would include
Options- A. compressive stress in the flange
- B. tensile stress in the wall
- C. both (a) and (b)
- D. none of these Discuss
- 5. When two pieces of different metals are to be welded by projection welding, then the projection should be made on the metal piece having __________ conductivity.
Options- A. lower
- B. higher Discuss
- 6. The maximum flame temperature occurs
Options- A. at the outer cone
- B. at the inner cone
- C. between the outer and inner cone
- D. at the torch tip Discuss
- 7. Slick is used for repairing and finishing the mould.
Options- A. Correct
- B. Incorrect Discuss
- 8. Shift is a casting defect which
Options- A. results in a mismatching of the top and bottom parts of a casting
- B. results in general enlargement of a casting
- C. occurs near the ingates as rough lumps on the surface of a casting
- D. occurs as sand patches on the upper surface of a casting Discuss
- 9. In welding aluminium with TIG arc welding, alternating current is used.
Options- A. Correct
- B. Incorrect Discuss
- 10. A large electrode is used in un-shielded arc welding.
Options- A. Correct
- B. Incorrect Discuss
Workshop Technology problems
Search Results
Correct Answer: lower deviation is zero
Correct Answer: cleaning the moulding sand
Correct Answer: deliver molten metal into the mould cavity
Correct Answer: both (a) and (b)
Correct Answer: higher
Correct Answer: at the inner cone
Correct Answer: Correct
Correct Answer: results in a mismatching of the top and bottom parts of a casting
Correct Answer: Correct
Correct Answer: Correct
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