Workshop Technology problems
- 1. In a hot chamber die casting machine
Options- A. ferrous alloys with low melting temperature are casted
- B. ferrous alloys with high melting temperature are casted
- C. non-ferrous alloys with low melting temperature are casted
- D. non-ferrous alloys with high melting temperature are casted Discuss
Correct Answer: non-ferrous alloys with low melting temperature are casted
- 2. The low pressure acetylene is produced at the welding site by the chemical reaction between water and calcium carbonate.
Options- A. Correct
- B. Incorrect Discuss
Correct Answer: Incorrect
- 3. When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.
Options- A. horizontal core
- B. vertical core
- C. drop core
- D. balanced core Discuss
Correct Answer: drop core
- 4. The temperature at which the new grains are formed in the metal is called
Options- A. lower critical temperature
- B. upper critical temperature
- C. eutectic temperature
- D. recrystallisation temperature Discuss
Correct Answer: recrystallisation temperature
- 5. In submerged arc welding, an arc is produced between a
Options- A. carbon electrode and the work
- B. metal electrode and the work
- C. bare metal electrode and the work
- D. two tungsten electrodes and the work Discuss
Correct Answer: bare metal electrode and the work
- 6. The chisel used for cutting key ways is
Options- A. flat chisel
- B. cape chisel
- C. round nose chisel
- D. diamond pointed chisel Discuss
Correct Answer: cape chisel
- 7. When a pattern is made in three parts, the bottom part is known as a cope.
Options- A. True
- B. False Discuss
Correct Answer: False
- 8. In a centrifugal casting method, the impurities are collected in the centre of the casting.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 9. Which of the following welding process uses non-consumable electrodes?
Options- A. TIG welding
- B. MIG welding
- C. Manual arc welding
- D. Submerged arc welding Discuss
Correct Answer: TIG welding
- 10. In a hot chamber die casting machine
Options- A. melting pot is separate from the machine
- B. melting pot is an integral part of the machine
- C. melting pot may have any location
- D. high temperature and pressure is used Discuss
Correct Answer: melting pot is an integral part of the machine
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