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# STRAIN ENERGY MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

## (MCQ) WITH ANSWERS

### 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

(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)