Pure Bending(Mechanics Of Materials ) Questions and Answers

Question 1. Unsymmetrical bending occurs due to ______
  1.    The Beam cross section is unsymmetrical
  2.    The shear Centre does not coincide with the neutral axis
  3.    The Beam is subjected to trust in addition to bending moment
  4.    The bending moment diagram is unsymmetrical
Explanation:-
Answer: Option D. -> The bending moment diagram is unsymmetrical
Answer: (d).The bending moment diagram is unsymmetrical
Question 2. Principal plane has ____________
  1.    Maximum shear stress
  2.    Maximum tensile stress
  3.    Zero shear stress
  4.    Minimum bending stress
Explanation:-
Answer: Option C. -> Zero shear stress
Answer: (c).Zero shear stress
Question 3. Calculate the Strain energy that can be stored in a body to be pulled with 100 N/mm² stress (f) and E = 2×10⁵ N/mm².
  1.    0.9 kNm
  2.    0.05kNm
  3.    0.87kNm
  4.    0.54kNm
Explanation:-
Answer: Option B. -> 0.05kNm
Answer: (b).0.05kNm
Question 4. A body having similar properties throughout its volume is said to be _____________
  1.    Isotropic
  2.    Homogeneous
  3.    Continuous
  4.    Uniform
Explanation:-
Answer: Option B. -> Homogeneous
Answer: (b).Homogeneous
Question 5. Materials exhibiting time bound behaviour are known as _______
  1.    Isentropic
  2.    Reactive
  3.    Fissile
  4.    Visco elastic
Explanation:-
Answer: Option D. -> Visco elastic
Answer: (d).Visco elastic
Question 6. The stress corresponding to breaking point is known as _____________
  1.    yield stress
  2.    ultimate stress
  3.    breaking stress
  4.    normal stress
Explanation:-
Answer: Option C. -> breaking stress
Answer: (c).breaking stress
Question 7. Volumetric strain = 3× _____ strain.
  1.    Lateral
  2.    Linear
  3.    Composite
  4.    Yield
Explanation:-
Answer: Option B. -> Linear
Answer: (b).Linear
Question 8. Determine the yield stress of a steel rod 20 mm diameter, if the yield load on the steel rod is 88kN.
  1.    240.55 N/mm²
  2.    280.25 N/mm²
  3.    325 N/mm²
  4.    290.45 N/mm²
Explanation:-
Answer: Option B. -> 280.25 N/mm²
Answer: (b).280.25 N/mm²
Question 9. __________ joints are provided when there is a break in the concreting operation.
  1.    transverse joints
  2.    longitudinal joints
  3.    construction joints
  4.    warpage joints
Explanation:-
Answer: Option C. -> construction joints
Answer: (c).construction joints
Question 10. What is the elongation percentage of a steel rod of 50 mm diameter if the total extension is is 54 mm and gauge length is 200 mm.
  1.    27%
  2.    23%
  3.    43%
  4.    35%
Explanation:-
Answer: Option A. -> 27%
Answer: (a).27%
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