Failure Envelopes And Earth Pressure(Engineering > Foundation Engineering ) Questions and Answers
Question 1. The plastic equilibrium stress equation in terms of flow valve is _____
a
b
c
d
Explanation:-
Answer: Option B. -> b Answer: (b).b
Question 2. With respect to the flow value, the total passive pressure for cohesive backfill is _______
a
b
c
d
Explanation:-
Answer: Option A. -> a Answer: (a).a
Question 3. The Mohr’s theory of failure can be symbolically expressed as ____________
τmax=F(σn) and σmax–σmin = f(σmax +σmin)
τmax = σmax– σmin
None of the mentioned
All of the mentioned
Explanation:-
Answer: Option A. -> τmax=F(σn) and σmax–σmin = f(σmax +σmin) Answer: (a).τmax=F(σn) and σmax–σmin = f(σmax +σmin)
Question 4. The concept of a three dimension yield envelope was presented by _________
D.C. Drucker and Prager
Mohr
None of the mentioned
All of the mentioned
Explanation:-
Answer: Option A. -> D.C. Drucker and Prager Answer: (a).D.C. Drucker and Prager
Question 5. A major drawback of Mohr criterion is ____________
Shape of the envelope
Principal stress
Shape of the plane
All of the mentioned
Explanation:-
Answer: Option A. -> Shape of the envelope Answer: (a).Shape of the envelope
Question 6. The coefficient of active earth pressure is_______ than the coefficient of passive pressure.
less than
greater than
equal to
insufficient data
Explanation:-
Answer: Option A. -> less than Answer: (a).less than
Question 7. What will be the co-efficient of passive earth pressure, at a depth of 8m in cohesion less soil sand with an angle of internal friction of 30° when the water rises to the ground level?
4
5
3
1
Explanation:-
Answer: Option C. -> 3 Answer: (c).3
Question 8. The lateral strain in the horizontal direction is _______
\(∈_h=\frac{1}{E} [σ_h-μ(σ_v)] \)
\(∈_h=\frac{1}{E} [σ_h-μ(σ_h-σ_v)]\)
\(∈_h=\frac{1}{E} [σ_h-μ(σ_h+σ_v)]\)
\(∈_h=\frac{1}{E} [σ_h-(σ_h-σ_v)]\)
Explanation:-
Answer: Option B. -> \(∈_h=\frac{1}{E} [σ_h-μ(σ_h-σ_v)]\) Answer: (b).\(∈_h=\frac{1}{E} [σ_h-μ(σ_h-σ_v)]\)
Question 9. For earth pressure at rest, there will be no ______
vertical stress
shear stress
horizontal stress
both vertical and horizontal stress
Explanation:-
Answer: Option B. -> shear stress Answer: (b).shear stress
Question 10. The coefficient earth pressure at rest is _______________
less than coefficient of active pressure
greater than coefficient of active pressure
equal to coefficient of active pressure
one
Explanation:-
Answer: Option B. -> greater than coefficient of active pressure Answer: (b).greater than coefficient of active pressure