Top 1000+ Solved Material Science MCQ Questions Answer
Q. a steel specimen during the test subjected to a stress of 300 N/mm2 and strain 1.5 x 10-3. the modulus of elasticity of steel is
a. 200 kpa
b. 200 mpa
c. 200 gpa
d. 200 pa
Q. a concrete specimen of square cross section is subjected to a force of 100 kN. A side of square is 75 mm. if strain in concrete block is1.5 x 10-3, the value of youngs modulus forconcrete is
a. 11.85n/mm2
b. 11.85kn/mm2
c. 11.85 n/m2
d. 11.85 kn/m2
Q. a steel specimen is subjected to a stress of 300 Mpa. If E = 200 Gpa, modulus of resilience is
a. 0.225
b. 7.5 x 10-4
c. 0.45 mpa
d. 450 mpa
Q. if total amount of energy absorbed by a steel specimen is 5 N-m for a volume of 10 x 10-3 mm3, the modulus of toughness is N/mm2
a. 5 x 10-4
b. 0.5
c. 2 x 103
d. 2
Q. an aluminium specimen is subjected to a stress of 160 /mm2 and corressponding modulus of resilience is 0.128 Mpa.Youngs modulus for aluminium is
a. 200 gpa
b. 125 gpa
c. 150 gpa
d. 100 gpa
Q. shows the good behevoiur under compression type of loading
a. ductile material
b. brittle material
c. any one ofabove
d. none of theabove
Q. are not used under compression type of loading
a. ductile material
b. brittle material
c. any one ofabove
d. none of theabove
Q. compression test is carried on machine
a. universal testing
b. impact testing
c. fatigue testing
d. torsion testing
Q. compression test gives best results for material
a. cast iron
b. comcrete block
c. ceramic products
d. all of the above
Q. during compression test, the point at which fracture initiates in material is called as
a. yield stress
b. ultimate stress
c. compressivestress
d. crushing strength
Q. a compression test specimen has cross section
a. square
b. rectangular
c. circular
d. all of the above
Q. in compression test, the length to diameter ratio is between
a. 5 to 10
b. 10 to 20
c. 1.5 to 10
d. 5.5 to 15
Q. in compression test with increase in the length to diameter ratio, compressive strength
a. increases
b. decreases
c. remain same
d. all of the above