Subject: Theory of Structure-I (CGPA)/ SA-I (CGPA revised)
Topic: Strain
Energy
1. in a bar of enormous length when held vertically and subjected to a load at its lower end, its own-weight produces extra stress. the maximum stress are
(A) At the lower cross-section
(B) At the inbuilt upper cross-section
(C) At the central cross-section
(D) At each point of the bar.
Answer: B
2. The property of a fabric by that it may be drawn to a smaller section, because of tension, is called
(A) ductility
(B) elasticity
(C) plasticity
(D) malleability
Answer: A
3. The development of slow growth of strain under a steady tensile stress, is called
(A) Yielding
(B) creeping
(C) Breaking
(D) None of the above
Answer: B
4. the practical units of work, is
(A) Erg
(B) Joule
(C) Newton
(D) Dyne
Answer: B
5. When a body falls freely under gravitational attraction, it possesses
(A) maximum weight
(B) Minimum weight
(C) No weight
(D) No impact on its weight.
Answer: C
6. As compared to uniaxial tension or compression, the strain energy stored in bending is merely
(A) 18
(B) 14
(C) 13
(D) 12
Answer: C
7. The energy stored in a beam of length L subjected to a constant B.M. is
(A) M2L/2EI
(B) ML2/2EI
(C) M2L/EI
(D) ML2/EI
Answer: A
8. the utmost stress intensity because of a suddenly applied load is x-times the stress intensity created by the load of an equivalent magnitude applied gradually. the value of x is
(A) 1
(B) 2
(C) 3
(D) 1/2
Answer: B
9. Strain energy of a member may be equated to
(A) Average resistance×displacement
(B) 12×stress×strain×area of its cross-section
(C) 12×stress×strain×volume of member
(D) 12×stress2×volume of member+Young's modulus E
Answer: D
10. Strain energy of any member could also be defined as work done on it
(A) To deform it
(B) To resist elongation
(C) To resist shortening
(D) All the above
Answer: D
11. Total strain energy theory for the failure of a fabric at elastic limit, is known
(A) Guest's or Trecas' theory
(B) St. Venant's theory
(C) Rankine's theory
(D) Haig's theory
Answer: D
12. the full strain energy of a beam of length L, having moment of inertia of its section I, once subjected to a bending moment M, is
(A) (M2/EI) dx
(B) (M2/2EI) dx
(C) ∫0L(M2/2EI) dx
(D) ∫0L(M2/EI) dx
Answer: C
13. The strain energy hold on in a spring once subjected to greatest load without being permanently distorted, is called
(A) Stiffness
(B) Proof resilience
(C) Proof stress
(D) Proof load
Answer: B
14. the greatest load that a spring will carry without obtaining getting distorted, is called
(A) Stiffness
(B) Proof resilience
(C) Proof stress
(D) Proof load
Answer: D
15. The ratio of the area of cross-section of a circular section to the area of its core, is
(A) 4
(B) 8
(C) 12
(D) 16
Answer: D
16. The ratio of the stresses produced by a suddenly applied load and by a gradually applied load on a bar, is
(A) 1/4
(B) 1/2
(C) 1
(D) 2
Answer: D
17. The strain energy because of volumetric strain
(A) is directly proportional to the volume
(B) is directly proportional to the sq. of exerted pressure
(C) is reciprocally proportional to bulk modulus
(D) All the on top of
Answer: D
18. The property of material to store strain energy is named
(A) ductility
(B) Modulus of rupture
(C) Strain hardening
(D) Resilience
Answer: D
19. Equation of Strain energy is
(A) (σ2/2E) ×V
(B) (σE2/2E)
(C) (σ2/E) ×V
(D) (σ2/2V) ×E
Answer: A
20. Proof resilience per material is known as
(A) Resilience
(B) Proof resilience
(C) Modulus of resilience
(D) Toughness
Answer: C
21. The capability of a strained body for doing work on the removal of the straining force, is called
(A) Strain Energy
(B) Resilience
(C) Proof resilience
(D) Impact Energy
Answer: B
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