Which of the following tools is used for making holes in wood, metal and concrete?

Which of the following tools is used for making holes in wood, metal and concrete? Correct Answer Drill machine

Explanation:

Drilling

  • Drilling is an operation to produce a cylindrical hole in a workpiece.
  • The tool used in called “drill bit”.

Additional Information 

Spanner

  • A spanner is a hand tool with jaws or opening or a ring at one end or at both ends for tightening or slackening nuts and bolts and screw heads.
  • It is made of drop- forged, high tensile or alloy steel and heat treated for strength.

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Hacksaw 

  • A hacksaw is a hand tool used to cut metal.
  • A hacksaw blade is made of either low alloy steel (LA) or high-speed steel (HSS) and is available in standard lengths of 250 mm and 300 mm.
  • The selection of the blade depends on the shape and hardness of the material to be cut.

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Bench vice

  • Vices are used for holding the work-pieces. They are available in different types.
  • The vice used for bench work is the bench vice or called Engineer’s vice.
  • A bench vice is made of cast iron or cast steel and it is used to hold or clamp work for filing, sawing, threading and other hand operations. 
  • The size of the vice is stated by the width of the jaws. e.g. 150 mm parallel jaw bench vice

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Related Questions

Historically, the production of wood charcoal in locations where there is an abundance of wood dates back to a very ancient period, and generally consists of piling billets of wood on their ends so as to form a conical pile, openings being left at the bottom to admit air, with a central shaft to serve as a flue. The whole pile is covered with turf or moistened clay. The firing is begun at the bottom of the flue, and gradually spreads outwards and upwards. The success of the operation depends upon the rate of the combustion. Under average conditions, 100 parts of wood yield about 60 parts by volume, or 25 parts by weight, of charcoal; small-scale production on the spot often yields only about 50%, while large-scale became efficient to about 90% even by the seventeenth century. The modern process of carbonizing wood, either in small pieces or as sawdust in cast iron retorts, is extensively practiced where wood is scarce, and also for the recovery of valuable byproducts (wood spirit, pyroligneous acid, wood tar), which the process permits. The information given, if accurate, most strongly supports which of the following?