MCQ THEORIES OF ELASTIC FAILURE

 

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MCQ THEORIES OF ELASTIC FAILURE

MCQ help to understand the topic in great depth. Then, it will be easy to apply these theories in the design of various machine parts.

Maximum principal stress theory is applicable to

(a) Ductile materials         

(b) Brittle materials
(c) Composite materials
(d) None
(Ans: b)

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
(Ans: a)

Maximum principal theory is also known as

(a) Guest Theory
(b) Beltrami Theory
(c) Rankine Theory
(d) None
(Ans: c)

Maximum principal theory is also known as

(a) Beltrami Theory
(b) Maximum normal stress theory
(c) Saint Venant’s theory
(d) None
(Ans: b)

Maximum principal stress is equal to

(a) (σx + σy)/2 + [ (σx –σy)2 + τ2]0.5
(b) (σx + σy)/2 + 0.5 [ (σx –σy)2 + τ2]0.5
(c) (σx + σy)/2 + 0.5 [ (σx –σy)2 + 4τ2]0.5
(d) None
(Ans: c)

Maximum shear stress theory is also called as

(a) Beltrami theory
(b) Coulomb’s theory
(c) Haigh theory
(d) None
(Ans: b)

Maximum shear stress theory is also called as

(a) Beltrami theory
(b) Haigh theory
(c) Tresca theory
(d) None
(Ans: c)

Maximum shear stress theory is also called as

(a) Guest’s theory
(b) Haigh theory
(c) Rankine theory
(d) None
(Ans: a)

Maximum shear stress theory is applicable to

(a) Ductile materials
(b) Brittle materials
(c) Composite materials
(d) None
(Ans: a)

Under maximum shear stress theory, maximum shear stress is equal to

(a) Allowable stress in tension
(b) Allowable stress in compression
(c) Allowable stress in shear
(d) None
(Ans: c)

Maximum shear stress is equal to

(a) (σ1 –σ2)/2
(b) (σ1 + σ2)/2
(c) (σ1 + 2σ2)/2
(d) None
(Ans: a)

Maximum principal strain theory is applicable to

(a) Ductile materials
(b) Brittle materials
(c) Composite materials
(d) None
(Ans: b)

Maximum principal strain theory is also called as

(a) Guest’s theory
(b) Haigh theory
(c) St.Venant’s theory
(d) None
(Ans: c)

Maximum principal strain is equal to when σ1 and σ2 are tensile

(a) (σ1 –µσ2)/E
(b) (σ1 + µσ2)/E
(c) (–σ1 –µσ2)/E
(d) None
(Ans:a)

Maximum total strain energy theory is also known as

(a) Guest’s theory
(b) Haigh theory
(c) St.Venant’s theory
(d) None
(Ans: b)

Maximum total strain energy theory is also known as

(a) Guest’s theory
(b) St.Venant’s theory
(c) Beltrami theory
(d) None
(Ans: c)

Maximum total strain energy theory is also known as

(a) Huber theory
(b) Rankine theory
(c) St.Venant’s theory
(d) None
(Ans: a)

Maximum total strain energy is equal to

(a) (σ12 +σ22)/2E
(b) ( σ12 +σ22+ 2µ σ1 σ2)/2E
(c) ( σ12 +σ22— 2µ σ1 σ2)/2E
(d) None
(Ans: c)

Maximum total strain energy theory is applicable to

(a) Ductile materials
(b) Brittle materials
(c) Composite materials
(d) None
(Ans:b)

Shear strain energy theory is also known as

(a) Huber theory
(b) Rankine theory
(c) Mises-Hencky theory
(d) None
(Ans: c)

Shear strain energy theory is also known as

(a) Von Mises Theory
(b) Coulomb’s theory
(c) Rankine theory
(d) None
(Ans: a)

Shear strain energy theory is also known as

(a) Coulomb’s theory
(b) Distortion energy theory
(c) Rankine theory
(d) None
(Ans: b)

Shear strain energy is equal to

(a) [( σ12 +σ22+ (σ1 + σ2)2]/12E
(b) [( σ12 +σ22 + (σ1 — σ2)2]/12G
(c) [(σ12 +σ22 + (σ1 + σ2)2]/12G
(d) None
(Ans: b)

Maximum total strain energy theory is applicable to

(a) Ductile materials
(b) Brittle materials
(c) Composite materials
(d) None
(Ans: a)