Top 1000+ Solved Material Science MCQ Questions Answer
Q. for calculating a proof stress, a parallel line isdrawn at
a. 0.1% of yield elongation
b. 0.2% of total elongation
c. 0.2% of yield elongation
d. 0.1% of total elongation
Q. is the maximum value of stress in theplastic region
a. uts
b. proof stress
c. yield stress
d. proportionalstress
Q. for ducttile material is the maximum value of stress the material can sustain
a. uts
b. proof stress
c. yield stress
d. proportionalstress
Q. is the minimum value of stress inplastic region
a. uts
b. proof stress
c. yield stress
d. breaking stress
Q. for brittle material its
a. yield stress and utsare very close
b. uts and breaking are very close
c. yield stress and uts and breaking are very close
d. none of theabove
Q. in tensile test, during strain hardening material after cold working shows in strength with decreased toughness
a. decrease
b. increase
c. no change
d. none of theabove
Q. during tensile test, if gauge length percentage elongation increases due to localised elongation
a. decreases
b. increases
c. same
d. all of the above
Q. states that geometrically similar samples having constant L/D ratio shows same % elongation
a. hooke\s law
b. barba\s law
c. newton\slaw
d. none of theabove
Q. during tensile test, type of loadingshould be avoided
a. shear
b. eccentric
c. repetitive
d. all of the above
Q. cast iron, glass, concrete, bricks etc. shows type of fracture
a. cleavege
b. cupcone
c. star
d. irregular fibrous
Q. mild steel, gold, silver, copper, aluminium, etc. shows type of fracture
a. cleavege
b. cupcone
c. star
d. irregular fibrous
Q. Cleavage fracture is the main characteristicsof
a. ductile material
b. brittle material
c. any one ofabove
d. none of theabove
Q. cup and cone type fracture is the main characteristics of
a. ductile material
b. brittle material
c. any one ofabove
d. none of theabove