The property of a material that resists penetration or indentation by means of abrasion or scratching is known as
A. toughness
B. brittleness
C. hardness
D. strenght
Answer: Option C
Solution (By Examveda Team)
The correct answer is Option C: hardnessLet's break down why:
Hardness: This refers to a material's ability to resist permanent deformation when a harder object is pressed onto its surface. Think of it like trying to scratch glass with plastic – the glass is harder and resists the scratching much better.
Toughness: This is a material's ability to absorb energy and plastically deform before fracturing. It's about resisting cracks and breaking.
Brittleness: This is the opposite of toughness. A brittle material fractures easily without much deformation. Think of glass shattering.
Strength: This is a material's ability to withstand stress without breaking or permanently deforming. It's a general term that encompasses different types of loading (tension, compression, shear).
So, when the question asks about resisting penetration or indentation by abrasion or scratching, it's specifically describing hardness.
This Question Belongs to Mechanical Engineering >> Miscellaneous In Mechanical Engineering
Which of the following property is affected by heat treatment.
A. Hardness
B. Strength
C. Ductility
D. All of the above
With reference to Mechatronics which statement is true
A. Mechatronics is the synergistic integration of mechanical, electrical and electronics engineering with intelligent computer control.
B. Mechatronics is the confluence of traditional design methods with sensors and instrumentation technology embedded real time micro processor.
C. Mechatronics is the extension and completion of mechanical system with sensors and microcomputer.
D. All of the above.
A. toughness
B. brittleness
C. hardness
D. strenght
A. Carnot
B. Rankine
C. Reversed carnot
D. Reversed rankine
Join The Discussion