Top 1000+ Solved Material Science MCQ Questions Answer
Q. shows good behavious undertensile type of loading
a. ductile material
b. brittle material
c. any one ofabove
d. none of theabove
Q. are not used under tensile typeloading
a. ductile material
b. brittle material
c. any one ofabove
d. none of theabove
Q. A 40 cm long rod of diameter 0.5 cm is loaded with 5 kN weight. The engineering stress in the rod is Mpa
a. 255
b. 160
c. 250
d. 200
Q. a 40 cm long rod of diameter 0.3 cm is subjected to 2 kN load. If the diameter of rod is reduced to 0.25 cm then true stressin rod is
a. 0.4075 gpa
b. 407.5 mpa
c. 407.5 x 103kpa
d. all of the above
Q. if engineering stress for a material is 250 Mpa and engineering strain is 0.2 , then true stress is
a. 200 mpa
b. 300 mpa
c. 1250 mpa
d. 50 mpa
Q. if engineering stress for a material is 250 Mpa and engineering strain is 0.2 , then true strain is
a. 0.079
b. -0.22
c. 0.18
d. -1.61
Q. a copper of thickness 10 mm is subjected to a lod of 10000 N. if yield strength of copper is 150 then, the width of plate is
a. 0.9 cm
b. 0.7 cm
c. 0.5 cm
d. 0.4 cm
Q. a nickel stell has engineeringnstress of 610 N/mm2 . The reduction in area of cross section at the fracture was 38 %. The true stress in the material is
a. 0.442kn/mm2
b. 0.881kn/mm2
c. 1.605kn/mm2
d. 0.232kn/mm2
Q. an aluminium tensile test specimen has reduction area of 44%. Its true strain is
a. 0.44
b. 1.44
c. 0.044
d. 4.4