A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal Strain Theory (c) Thirdly Maximum principal strain energy theory (d) None

A ductile material may not meet a failure if it has been tested for the theories of failure

(a) Firstly Maximum Principal Theory

(b) Secondly Maximum Principal Strain Theory

(c) Thirdly Maximum principal strain energy theory

(d) None
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1 Answer

Answer :

(d) None
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Shear strain energy under principal tensile stresses σ1 and σ2 is (a) (1/12E) (σ1 — σ2) 2 + σ2 2 — σ1 2 ) (b) (1/12G) (σ1 — σ2) 2 + σ2 2 + σ1 2 ) (c) (1/12K) (σ1 — σ2) 2 + σ2 2 + σ1 2 ) (d) None

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A transmission shaft subjected to pure bending moment should be designed on the basis of (A) Maximum principal stress theory (B) Maximum shear stress theory (C) Distortion energy theory (D) Goodman or Soderberg diagrams

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Theories of elastic failure while dealing with brittle materials consider the failure criterion as (a) Ultimate stress (b) Yield stress (c) Both ultimate and yield stress (d) None

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Theories of elastic failure help to recognize (a) Weak materials (b) Strong materials (c) Both weak and strong materials (d) None

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Last Answer : (c) Both weak and strong materials

Under complex loading, theories of elastic failure establishes the (a) Margin of failure (b) Margin of safety (c) Both (a) & (b) (d) None

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Last Answer : (b) Margin of safety

Finding allowable stress after the application of theories of failure ensures (a) Soundness of design (b) Lapses in design (c) Both (a) & (b) (d) None

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Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?

Description : Which theories of failure are used for (a) ductile materials, and (B) brittle materials ?

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Which Theories Of Failure Are Used For? (a) Ductile Materials (b) Brittle Materials?

Description : Which Theories Of Failure Are Used For? (a) Ductile Materials (b) Brittle Materials?

Last Answer : For ductile materials, theories of failure used are maximum shear stress theory and maximum energy of distortion theory; For brittle materials, the theory of maximum principal stress and maximum strain are used.

Maximum principal theory is also known as (a) Beltrami Theory (b) Maximum normal stress theory (c) Saint Venant’s theory (d) None

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Last Answer : (b) Maximum normal stress theory

Maximum principal theory is also known as (a) Guest Theory (b) Beltrami Theory (c) Rankine Theory (d) None

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Last Answer : (c) Rankine Theory

Under maximum principal stress theory, maximum principal stress is equal to (a) Allowable stress in tension (b) Allowable stress in compression (c) Allowable stress in shear (d) None

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Last Answer : (a) Allowable stress in tension

Maximum Principal Stress Theory is not good for brittle materials. a) True b) False

Description : Maximum Principal Stress Theory is not good for brittle materials. a) True b) False

Last Answer : b) False

If compressive yield stress and tensile yield stress are equivalent, then region of safety from maximum principal stress theory is of which shape? a) Rectangle b) Square c) Circle d) Ellipse

Description : If compressive yield stress and tensile yield stress are equivalent, then region of safety from maximum principal stress theory is of which shape? a) Rectangle b) Square c) Circle d) Ellipse

Last Answer : b) Square

Shear strain energy theory is also known as (a) Coulomb’s theory (b) Distortion energy theory (c) Rankine theory (d) None

Description : Shear strain energy theory is also known as (a) Coulomb’s theory (b) Distortion energy theory (c) Rankine theory (d) None

Last Answer : (b) Distortion energy theory

Shear strain energy theory is also known as (a) Von Mises Theory (b) Coulomb’s theory (c) Rankine theory (d) None

Description : Shear strain energy theory is also known as (a) Von Mises Theory (b) Coulomb’s theory (c) Rankine theory (d) None

Last Answer : (a) Von Mises Theory