Questions and answers for exam Preparation

MCQs

Total Questions : 189 | Page 11 of 19 pages

Question 101. For a triangular and uniformly distributed semi-infinite loads, the shear stress τxz in the plane xz is ___________

\(τ_{xz}=-\frac{qz}{aπ} α \)
\(τ_{xz}=-\frac{q}{π} α\)
\(τ_{xz}=-\frac{q}{π} \left[\frac{az}{a^2+z^2}\right]\)
\(τ_{xz}=-\frac{q}{π} z\)

Discuss Question

Answer: Option A. -> \(τ_{xz}=-\frac{qz}{aπ} α \)
Answer: (a).\(τ_{xz}=-\frac{qz}{aπ} α \)

Question 102. For a linearly variable infinite load, for a point P, the vertical stress σz is _________

\(σ_z=\frac{q}{aπ} \left[xα+z\right] \)
\(σ_z=\frac{q}{aπ} \)
\(σ_z=\frac{q}{π}\left[\frac{az}{a^2+z^2}\right] \)
\(σ_z=\left[xα-\frac{az}{(x-α)^2+z^2}(x-α)\right] \)

Discuss Question

Answer: Option A. -> \(σ_z=\frac{q}{aπ} \left[xα+z\right] \)
Answer: (a).\(σ_z=\frac{q}{aπ} \left[xα+z\right] \)

Question 103. For a symmetrically distributed triangular load, under the centre of the triangular load, the vertical stress at any point at a depth z is given by ___________

\(σ_z=\frac{q}{aπ} \left[α_1+α_2 \right] \)
\(σ_z=\frac{q}{π} \left[α_1+α_2 \right]\)
\(σ_z=\frac{q}{π} \left[\frac{az}{a^2+z^2}\right]\)
\(σ_z=\frac{q}{π} \left[α_1-α_2 \right]\)

Discuss Question

Answer: Option B. -> \(σ_z=\frac{q}{π} \left[α_1+α_2 \right]\)
Answer: (b).\(σ_z=\frac{q}{π} \left[α_1+α_2 \right]\)

Question 104. For a symmetrically distributed triangular load, the shear stress τxz at any point at a depth z is given by ___________

\(τ_{xz}=-\frac{qz}{aπ} \left[α_1-α_2 \right] \)
\(τ_{xz}=-\frac{q}{π} \left[α_1+α_2 \right]\)
\(τ_{xz}=-\frac{q}{π} \left[\frac{az}{a^2+z^2}\right]\)
\(τ_{xz}=-\frac{q}{π} \left[α_1-α_2 \right] \)

Discuss Question

Answer: Option A. -> \(τ_{xz}=-\frac{qz}{aπ} \left[α_1-α_2 \right] \)
Answer: (a).\(τ_{xz}=-\frac{qz}{aπ} \left[α_1-α_2 \right] \)

Question 105. For a load intensity of q=20kN/m, find the shear stress τxz at a depth 5m from the given diagram.

-5.2 kN/m²
-6.2 kN/m²
-7.2 kN/m²
-8.2 kN/m²

Discuss Question

Answer: Option B. -> -6.2 kN/m²
Answer: (b).-6.2 kN/m²

Question 106. For a triangular and uniformly distributed semi-infinite loads, the vertical stress σz is given by ___________

\(σ_z=\frac{q}{aπ}[xα+z] \)
\(σ_z=\frac{q}{aπ}(aβ+xα) \)
\(σ_z=\frac{q}{π} \left[\frac{az}{a^2+z^2}\right]\)
\(σ_z=[xα-\frac{az}{(x-α)^2+z^2}(x-α)]\)

Discuss Question

Answer: Option B. -> \(σ_z=\frac{q}{aπ}(aβ+xα) \)
Answer: (b).\(σ_z=\frac{q}{aπ}(aβ+xα) \)

Question 107. The force systems acting on an elastic body in equilibrium are _______

body forces only
surface forces only
both body and surface forces
body stresses

Discuss Question

Answer: Option C. -> both body and surface forces
Answer: (c).both body and surface forces

Question 108. ___________ is an example of surface force.

inertia force
gravitational force
magnetic force
hydrostatic force

Discuss Question

Answer: Option D. -> hydrostatic force
Answer: (d).hydrostatic force

Question 109. For a load intensity of q=20kN/m, find the vertical stress σz from the given diagram.

5.62 kN/m²
6.23 kN/m²
13.33 kN/m²
8.32 kN/m²

Discuss Question

Answer: Option C. -> 13.33 kN/m²
Answer: (c).13.33 kN/m²

Question 110. Surfaces forces are applied _________

externally at boundaries of body
internally at boundaries of body
only on one side in internal of the body
throughout the volume of the body

Discuss Question

Answer: Option A. -> externally at boundaries of body
Answer: (a).externally at boundaries of body

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