Strength Of Materials In Me - Study Mode

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[#316] Strain energy is the

(A) Energy stored in a body when strained within elastic limits

(B) Energy stored in a body when strained up to the breaking of a specimen

(C) Maximum strain energy which can be stored in a body

(D) Proof resilience per unit volume of a material

Correct Answer

(A) Energy stored in a body when strained within elastic limits

[#317] At the neutral axis of a beam

(A) The layers are subjected to maximum bending stress

(B) The layers are subjected to minimum bending stress

(C) The layers are subjected to compression

(D) The layers do not undergo any strain

Correct Answer

(D) The layers do not undergo any strain

[#318] For a given stress, the ratio of moment of resistance of a beam of square cross-section when placed with its two sides horizontal to the moment of resistance with its diagonal horizontal, is

(A) $$frac{1}{2}$$

(B) 1

(C) $$frac{1}{{sqrt 2 }}$$

(D) $$sqrt 2 $$

Correct Answer

(D) $$sqrt 2 $$

[#319] A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The maximum normal stress will be

(A) 400 MPa

(B) 500 MPa

(C) 900 MPa

(D) 1400 MPa

Correct Answer

(D) 1400 MPa

[#320] A body is subjected to a tensile stress of 1200 MPa on one plane and another tensile stress of 600 MPa on a plane at right angles to the former. It is also subjected to a shear stress of 400 MPa on the same planes. The minimum normal stress will be

(A) 400 MPa

(B) 500 MPa

(C) 900 MPa

(D) 1400 MPa

Correct Answer

(A) 400 MPa