Workshop Technology problems
- 1. Cores are used to
Options- A. form internal cavities in the casting
- B. improve mould surface
- C. form a part of a green sand mould
- D. all of these Discuss
Correct Answer: all of these
- 2. For welding plates of thickness less than 5 mm, its edges
Options- A. do not require bevelling
- B. should be bevelled to a single-V or U-groove
- C. should have a double-V or U-groove on one side
- D. should have a double-V or U-groove on both sides Discuss
Correct Answer: do not require bevelling
- 3. Shrinkage allowance is made by adding to external dimensions and subtracting from internal dimensions.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 4. Tandem drawing of wires and tubes is necessary because
Options- A. it is not possible to reduce at one stage
- B. annealing is needed between stages
- C. accuracy in dimensions is not possible otherwise
- D. surface finish improves after every drawing stage Discuss
Correct Answer: annealing is needed between stages
- 5. In sheet metal work, the cutting force on the tool can be reduced by
Options- A. grinding the cutting edges sharp
- B. increasing the hardness of tool
- C. providing shear on tool
- D. increasing the hardness of die Discuss
Correct Answer: grinding the cutting edges sharp
- 6. An oxidising flame is obtained when equal volumes of oxygen and acetylene are supplied.
Options- A. True
- B. False Discuss
Correct Answer: False
- 7. Which of the following statement is wrong?
Options- A. The mortise gauge has two scribing pins.
- B. The gouges are chisels with a hollow shaped blade.
- C. An auger is a planing tool
- D. all of these Discuss
Correct Answer: An auger is a planing tool
- 8. The drawing down is a process of __________ the cross-section of a bar.
Options- A. increasing
- B. reducing Discuss
Correct Answer: reducing
- 9. During hot working of metals
Options- A. poor surface finish is produced
- B. scale is formed on the metal surface
- C. close tolerances can not be maintained
- D. all of these Discuss
Correct Answer: all of these
- 10. A jolt 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 sand hardness throughout the mould
- D. produce uniform packing of sand in the mould Discuss
Correct Answer: ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
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