Workshop Technology problems
- 1. The electrodes used in spot welding have a tip of
Options- A. stainless steel
- B. aluminium
- C. copper
- D. brass Discuss
Correct Answer: copper
- 2. The blank diameter used in thread rolling will be
Options- A. equal to minor diameter of the thread
- B. equal to pitch diameter of the thread
- C. a little larger than the minor diameter of the thread
- D. a little larger than the pitch diameter of the thread Discuss
Correct Answer: a little larger than the minor diameter of the thread
- 3. Metal patterns are used for
Options- A. small castings
- B. large castings
- C. complicated castings
- D. large scale production of castings Discuss
Correct Answer: large scale production of castings
- 4. The draft or taper allowance on casting is generally
Options- A. 1 to 2 mm/m
- B. 2 to 5 mm/m
- C. 5 to 10 mm/m
- D. 10 to 15 mm/m Discuss
Correct Answer: 1 to 2 mm/m
- 5. A taper provided on the pattern for its easy and clean withdrawl from the mould is known as
Options- A. machining allowance
- B. draft allowance
- C. shrinkage allowance
- D. distortion allowance Discuss
Correct Answer: draft allowance
- 6. The centrifugal casting method, is used for casting articles of
Options- A. symmetrical shape about vertical axis
- B. symmetrical shape about horizontal axis
- C. irregular shape
- D. non-ferrous metal only Discuss
Correct Answer: symmetrical shape about horizontal axis
- 7. In a bilateral system of tolerance, the tolerance is allowed on
Options- A. one side of the actual size
- B. one side of the nominal size
- C. both sides of the actual size
- D. both sides of the nominal size Discuss
Correct Answer: both sides of the nominal size
- 8. In a centrifugal casting method
Options- A. core is made of sand
- B. core is made of ferrous metal
- C. core is made of non-ferrous metal
- D. no core is used Discuss
Correct Answer: no core is used
- 9. The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame.
Options- A. same as
- B. less than
- C. more than Discuss
Correct Answer: less than
- 10. Thread rolling is restricted to
Options- A. ferrous materials
- B. ductile materials
- C. hard materials
- D. none of these Discuss
Correct Answer: ductile materials
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