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Q: Which type of bolt hole is more preferable to minimize the deformation of the work plate?
  • A. It depends on action of load
  • B. Drilled hole
  • C. Punched hole
  • D. It depends on bolt material
Correct Answer: Option B - Bolt holes should preferably be drilled, they may be punched if the diameter of the hole is greater than the thickness of the part provided that said thickness is not greater than 15 mm and the parts to be joined are not subject to fatigue stressing. • Drilled hole is more preferable to minimize the deformation of the work plate.
B. Bolt holes should preferably be drilled, they may be punched if the diameter of the hole is greater than the thickness of the part provided that said thickness is not greater than 15 mm and the parts to be joined are not subject to fatigue stressing. • Drilled hole is more preferable to minimize the deformation of the work plate.

Explanations:

Bolt holes should preferably be drilled, they may be punched if the diameter of the hole is greater than the thickness of the part provided that said thickness is not greater than 15 mm and the parts to be joined are not subject to fatigue stressing. • Drilled hole is more preferable to minimize the deformation of the work plate.