STRAIN ENERGY MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS
STRAIN ENERGY MULTIPLE
CHOICE QUESTIONS
(MCQ) WITH ANSWERS
Strain energy is due strain. There
is strain energy in tension, compression,
shear and bending. It is equal to work done
in deforming a body. Strain energy determines
slope and deflection. There are principal strain
energy and shear strain energy as
theories of failure. These help in the
safe design of beams, shafts and springs.
Q1. Strain energy due to gradually applied load is
(a) Load x extension
(b) 2 x Load x extension
(c) 0.5 x Load x extension
(d) None
(Ans: c)
Q2. Strain energy due to suddenly applied load is
(a) Load x extension
(b) 2 x Load x extension
(c) 0.5 x Load x extension
(d) None
(Ans: a)
Q3. Resilience is
(a) Strain energy per unit length
(b) Strain energy per unit area
(c) Strain energy per unit volume
(d) None
(Ans; c)
Q4. Proof resilience is
(a) As per yield point stress
(b) As per elastic limit stress
(c) As per ultimate stress
(d) None
(Ans: b)
Q5. Equation of total strain energy is
(a) (σ2/2E) x area
(b) (σ2/2E) x volume
(c) (σ2/2E) x length
(d) None
(Ans: b)
Q6. Equation of resilience is
(a) σ2/2E
(b) 2σ2/E
(c) 3σ2/2E
(d) None
(Ans: a)
Q7. Total strain energy up to fracture point is
(a) Resilience
(b) Proof residence
(c) Toughness
(d) None
(Ans: c)
Q8. Modulus of resilience is
(a) Resilience
(b) Proof residence
(c) Toughness
(d) None
(Ans: b)
Q9. Strain energy can determine
(a) Stiffness
(b) Slope
(c) Section modulus
(d) None
(Ans: b)
Q10. Strain energy can determine
(a) Stiffness
(b) Moment of inertia
(c) Deflection
(d) None
(Ans: c)
Q11. Store strain energy in
(a) Beams
(b) Columns
(c) Springs
(d) None
(Ans: c)
Q12. Principal strain energy theory applies to
(a) Brittle materials
(b) Ductile Materials
(c) Ductile as well as brittle materials
(d) None
(Ans: a)
Q13. The shape of area of the Strain energy up to the elastic limit is
(a) Parabola
(b) Rectangle
(c) Square
(d) None
(Ans: d)
Q14. The shape of area of the Strain energy up to the elastic limit is
(a) Triangle
(b) Trapezium
(c) T-section
(d) None
(Ans: a)
15. Total strain energy up to the point of fracture is
(a) hardness
(b) Softness
(c) Toughness
(d) None
ANS: (c)
16. Resilience is most important parameter under
(a) Thermal Load
(b) fatigue Load
(c) Shock load
(d) None
ANS: (c)
17. Strain energy of a beam depends upon
(a) shear force
(b) Bending moment
(c) Both (a) & (b)
(d) None
ANS: (c)
18. Strain energy under suddenly applied as compared to same load applied gradually is
(a) Same
(b) >
(c) <
(d) None
ANS: (b)
19. Strain energy under suddenly applied as compared to same load applied gradually is
(a) Same
(b) 2 times
(c) 4 times
(d) None
ANS: (c)
20. Under the same type of load and span, which beam has more strain energy?
(a) Simply supported beam
(b) Cantilever
(c) Fixed beam
(d) None
ANS: (b)
21. Under a load W, the deflection δ is related to strain energy U as
(a) Firstly δ = ∂U/W
(b) Secondly δ = ∂U/∂W
(c) δ2 = ∂U/∂W
(d) None
ANS: (b)