Toughness:
When a huge external force is applied on a metal, the metal will experience fracture. Toughness is the ability of a metal to resist fracture. The ability of a material to resist fracture due to high impact loads, is called toughness.
Brittleness
Brittleness is a property of material which breaks with little or no deformation.
Ductility:
Ductility is the property by which a metal can be drawn into thin wires. It is determined by percentage elongation and percentage reduction in area of a metal.
Hardness:
Hardness is the ability of a metal to resist permanent change of shape caused by an external force.
68) Ability of a metal to withstand shock and impact
Answer is:
Toughness
Explanation:
Related ISRO Technician-B Fitter Question Paper - 2019 (Set - 1) with Answer Key
Answer is:
118 degree
Explanation:
The point angle in a general purpose drill bit is 118 degree.
Answer is:
Arbor
Explanation:
Drill chucks are fitted on the drilling machine spindle by means of Arbor.
Answer is:
pitch of the thread
Answer is:
Feeler gauge
Explanation:
Feeler gauges are used:
– To check the gap between the mating parts
– To check and set the spark plug gaps
– To set the clearance between the fixture (setting block) and the cutter/tool for machining the jobs
– To check and measure the bearing clearance, and for many other purposes where a specified clearance must be maintained.
