Hello Diploma Students in this article we have provided 22303 Mechanics of Structure Mcq Questions and Answers. In this Mcq on Mechanics of Structure with Answers We have Selected 35 Important Questions from Previous Year Papers and Made A possible Set Of Questions which can Help Students in Preparation for Their Exams.

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## Mechanics of Structure Mcq Questions and Answers

1) The axis passing through the center of gravity of a section is called
A] Centroidal axis
B] X-X axis
C] Y-Y axis
D] All of the above

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2) Moment of inertia is a________ moment of area
A] First
B] Second
C] Infinite
D] Zero

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3) Radius of gyration is expressed as.
A] N
B] kN
C] mm
D] kN-m

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4) Moment of inertia of quarter circle is
A] 0.11 R4
B] 0.055 R4
C] 0.55 R2
D] 0.011 R4

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5) The moment of inertia of plane section about any axis parallel to the centroidal axis is equal to the moment of inertia of the section about the centroidal axis plus the product of the area of the section and the square of the distance between the two axes is a
A] Perpendicular axis theorem
B] Polar axis theorem
C] Parallel axis theorem
D] All the above

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6) Calculate moment of inertia of a circular section having 50 mm diameter
A] 306.79×103 mm4
B] 308.7×104 mm4
C] 311.20×104 mm4
D] 364.20×104 mm4

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7) Stress is a______
A] External force
B] Internal resisting force
C] Axial force

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8) When tensile stress is applied axially on a circular rod its
A] Diameter decreases and length also decreases
B] Diameter decreases and length increases
C] Diameter increases and volume decreases
D] Length decreases

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9) Tensile strain is
A] Increase in length /Original length
B] Decrease in length/ Original length
C] Change in volume / Original volume
D] All of the above

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10) Hooke’s law is applicable within
A] Elastic limit
B] Plastic limit
C] Fracture point
D] Ultimate strength

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11) Modulus of rigidity is
A] Tensile stress / Tensile strain
B] Shear stress / Shear strain
C] Tensile stress / Shear strain
D] Shear stress / Tensile strain

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12) A rod, 120cm long and diameter 3 cm is subjected to an axial pull of 18kN. The stress in N/mm2 is
A] 22.57
B] 23.47
C] 24.57
D] 25.47

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13) Which of the following is not a basic type of strain
A] Compressive strain
B] Shear strain
C] Area strain
D] Volume strain

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14) Double shear is a (A- Area of cross section, P- Load)
A] P/2A
B] 2P/A
C] 2P/2A
D] P/A

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15) Bulk modulus of elasticity is
A] Tensile stress/Tensile strain
B] Shear stress / Shear strain
C] Tensile stress/ Shear strain
D] Nominal stress on each face of cube / volumetric strain

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16) Poisson’s ratio is
A] Lateral strain to linear strain
B] Shear strain to lateral strain
C] Linear strain to lateral strain
D] Lateral strain to volumetric strain

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17) Modulus of elasticity is
A] Strain /stress
B] stress/strain
C] Stress-strain
D] Stress x strain

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18) The relationship between modulus of elasticity (E), Bulk modulus (K) and Poisson’s ratio (u) is given by
A] E=2K(1-u)
B] E=3K(1-2u)
C] E=2K(1-3u)
D] E=3K(1-u)

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19) The deformation per unit length is called as
A] Strain
B] Stress
C] Elasticity
D] Plasticity

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20) Which of the following material is more elastic
A] Rubber
B] Glass
C] Steel
D] Wood

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21) Young modulus of certain metal is 120kN/mm2, if Poisson’s ratio is 0.29. Find the value of modulus of rigidity
A] 44.51 kN/mm2
B] 46.512 kN/mm2
C] 40.12 kN/mm2
D] 47.512 kN/mm2

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22) Find temperature stress if rod is heated through 60⁰, Coefficient of linear expansion=12×102-6/⁰c and E=2.1×105N/mm2
A] 128.2 N/mm2
B] 151.2 N/mm2
C] 204.2 N/mm2
D] 32k N/mm2

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23) A bar of c/s area mm2 is axially pulled by a force ‘P’ kN. If the maximum stress induced in the bar is 30mpa, determine ‘P’.
A] 3 kN
B] 2 kN
C] 0.4 kN
D] 6 kN

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24) The stress-strain curve for a mild steel is straight line up to
A] Yield point
B] Proportional limit
C] Elastic limit
D] all of the above

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25) State Different Types of beam
(A) Simply supported beam
(B) Cantilever beam
(C) Fixed beam
(D) All of the above

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26) The internal resistance force against the deformation per unit cross sectional area is called stress
(A) True
(B) False

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27) Ductility is the ability of material to absorb energy when it is deformed elastically and release that energy upon unloading.
(A) True
(B) False

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28) Shear modulus is defined as when a body is loaded within an elastic limit the ratio of shear stress to shear strain is constant.
(A) True
(B) False

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29) Resilience is the property of material to undergo a considerable deformation under tension before rupture.
(A) True
(B) False

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30) Hooke’s law states that when a material is loaded within its elastic limit, the Strain produced is Indirectly proportional to the Stress
(A) True
(B) False

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22303 Mechanics of Structures MCQ

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