Workshop Technology problems
- 1. The metal patterns as compared to wooden patterns require less
Options- A. shrinkage allowance
- B. machining allowance
- C. draft allowance
- D. distortion allowance Discuss
Correct Answer: draft allowance
- 2. 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
Correct Answer: 26 mm/m
- 3. The diaphragm moulding machine is used to
Options- A. ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
- B. ram the sand harder at the back of the mould and softer on the pattern face
- C. produce uniform packing of sand in the mould
- D. give uniform sand hardness throughout the mould Discuss
Correct Answer: give uniform sand hardness throughout the mould
- 4. The difference between the upper limit and lower limt of a dimension is called
Options- A. nominal size
- B. basic size
- C. actual size
- D. tolerance Discuss
Correct Answer: tolerance
- 5. When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
Options- A. die casting method
- B. slush casting method
- C. permanent mould casting method
- D. centrifugal casting method Discuss
Correct Answer: permanent mould casting method
- 6. When the file is moved to and fro over the work, it is known as
Options- A. cross filing
- B. draw filing
- C. pull and push filing
- D. none of these Discuss
Correct Answer: draw filing
- 7. The two rolls in a two high rolling mills are of __________ size.
Options- A. equal
- B. different Discuss
Correct Answer: equal
- 8. The edge of a steel plate cut by oxygen cutting will get hardened when the carbon content is
Options- A. less than 0.1 percent
- B. less than 0.3 percent
- C. more than 0.3 percent
- D. any where between 0.1 to 1 percent Discuss
Correct Answer: more than 0.3 percent
- 9. The sand used for making cores is
Options- A. green sand
- B. dry sand
- C. loam sand
- D. oil sand Discuss
Correct Answer: oil sand
- 10. The process of decreasing the cross-section of a bar and increasing its length, is called
Options- A. drawing down
- B. upsetting
- C. spinning
- D. peening Discuss
Correct Answer: drawing down
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