Top 150+ Solved Structural Mechanics MCQ Questions Answer
Q. The percentage reduction in area of a cast iron specimen during tensile test would be of the order of
a. more than 50%
b. 25—50%
c. 10—25%
d. negligible.
Q. In a tensile test, near the elastic limit zone, the
a. tensile strain increases more quickly
b. tensile strain decreases more quickly
c. tensile strain increases in proportion to the stress
d. tensile strain decreases in proportion to the stress
Q. The stress necessary to initiate yielding is
a. considerably greater than that necessary to continue it
b. considerably lesser than that necessary to continue it
c. greater than that necessary to stop it
d. lesser than that necessary to stop it
Q. Rupture stress is
a. breaking stress
b. maximum load/original cross-sectional area
c. load at breaking point/A
d. load at breaking point/neck area
Q. stress at which extension of material takes place more quickly as comparedto increase in load is called
a. elastic point of the material
b. plastic point of the material
c. breaking point of the material
d. yielding point of the material
Q. The energy absorbed in a body, when it is strained within the elastic limits,is known as
a. strain energy
b. resilience
c. proof resilience
d. modulus of resilience
Q. Resilience of a material is considered when it is subjected to
a. frequent heat treatment
b. fatigue
c. creep
d. shock loading
Q. The maximum strain energy that can be stored in a body is known as
a. impact energy
b. resilience
c. proof resilience
d. modulus of resilience
Q. The total strain energy stored in a body is termed as
a. resilience
b. proof resilience
c. modulus of resilience
d. toughness
Q. Proof resilience per material is known as
a. resilience
b. proof resilience
c. modulus of resilience
d. toughness
Q. The stress induced in a body due to suddenly applied load compared to when it is applied gradually is
a. same
b. half
c. two times
d. four times
Q. strain energy stored in a body due to suddenly applied load compared towhen it is applied gradually is
a. same
b. twice
c. four times
d. eight times
Q. During a tensile test on a specimen of 1 cm cross-section, maximum load observed was 8 tonnes and area of cross-section at neck was 0.5 cm2. Ultimate tensile strength of specimen is
a. 4 tonnes/cm2
b. 8 tonnes/cm2
c. 16 tonnes/cm2
d. 22 tonnes/cm2
Q. Tensile strength of a material is obtained by dividing the maximum loadduring the test by the
a. area at the time of fracture
b. original cross-sectional area
c. average of (a) and (b)
d. minimum area after fracture