Workshop Technology problems
- 1. When a pattern is made in three parts, the __________ is known as a drag.
Options- A. bottom part
- B. middle part
- C. top part Discuss
Correct Answer: bottom part
- 2. Aluminium is the best material for making patterns because it is
Options- A. light in weight
- B. easy to work
- C. corrosion resistant
- D. all of these Discuss
Correct Answer: all of these
- 3. Scab is a casting defect which occurs as sand patches on the upper surface of a casting.
Options- A. True
- B. False Discuss
Correct Answer: True
- 4. In bending operation, the metal takes the shape of a punch.
Options- A. Yes
- B. No Discuss
Correct Answer: Yes
- 5. Carburising flame is used to weld
Options- A. steel, cast iron, copper, aluminium etc
- B. brass and bronze
- C. hard surfacing materials such as stellite
- D. all of these Discuss
Correct Answer: hard surfacing materials such as stellite
- 6. Lancing is the operation of
Options- A. cutting a sheet of metal in a straight line along the length
- B. removal of metal to the desired shape from the edge of a plate
- C. cutting a sheet of metal through part of its length and then bending the cut portion
- D. bending a sheet of metal along a curved axis Discuss
Correct Answer: cutting a sheet of metal through part of its length and then bending the cut portion
- 7. For welding plates of thickness more than 12.5 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: should have a double-V or U-groove on both sides
- 8. A pouring basin acts as a reservoir for the molten metal.
Options- A. Agree
- B. Disagree Discuss
Correct Answer: Agree
- 9. In a cold chamber die casting machine, only non-ferrous alloys with __________ are casted.
Options- A. low melting temperature
- B. high melting temperature Discuss
Correct Answer: high melting temperature
- 10. In electric resistance welding, voltage required for heating is
Options- A. 1 to 5 volts
- B. 6 to 10 volts
- C. 11 to 20 volts
- D. 50 to 100 volts Discuss
Correct Answer: 6 to 10 volts
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