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Strength-of-materials Questions Set 27:

Quiz Mode

What is the desirable limit for sulfates in drinking water?

230 mg/L

150 mg/L

340 mg/L

180 μg/L

Solution:

What type of column is observed if the slenderness ratio for a column is 100?

Long

Medium

Short

Weak

Solution:

To determine the strength of a material, what is calculated?

Strain

Stress

Quality

None of the above

Solution:

To determine the endurance limit of a material, which of the following tests is conducted?

Compression test

Creep test

Hardness test

Fatigue test

Solution:

Young's modulus of elasticity and Poisson's ratio of a material are 2 × 10⁵ MPa and 0.34 respectively. Determine the modulus of rigidity of the material.

0.4025 × 10^5 MPa

0.4664 × 10^5 MPa

0.8375 × 10^5 MPa

0.7462 × 10^5 MPa

Solution:

Which of the following statements describes a material's ability to resist deformation under stress?

Deformation under stress

Fracture due to high impact loads

Externally applied forces with breakdown or yielding

None of the above

Solution:

Consider the following:

σ₁ = Maximum value of principal stress (Algebraically)

σ₂ = Minimum value of principal stress (Algebraically)

What is the correct formula for the maximum shear stress?

(σ₁ - σ₂)/2

(σ₁ + σ₂)/2

0.67*(σ₁ - σ₂)

0.577*(σ₁ - σ₂)

Solution:

As soon as the external forces causing deformation in a perfectly elastic body are withdrawn, the elastic deformation disappears:

only partially

completely over a prolonged period of time

completely and instantaneously

completely after an initial period of rest

Solution:

What is the strain energy per unit volume if the shear stress for a material is given as 55 N/mm^2?
Take G = 80,000 N/mm^2 (up to 3 decimal places).

0.015625 N/mm^2 per unit volume.

0.016625 N/mm^2 per unit volume.

0.017906 N/mm^2 per unit volume.

0.018906 N/mm^2 per unit volume.

Solution:

We have been given a material with an ultimate tensile strength of 500 MPa and an elongation up to maximum load of 25%. The material follows the power law of hardening. Calculate the values of n and k in the true stress-true strain relation given below, where the stress in MPa is in the plastic deformation range.

Stress = k × (Strain)ⁿ

0.21 and 676 MPa

0.25 and 625 MPa

0.30 and 578 MPa

0.28 and 651 MPa

Strength-of-materials Questions Set 27:

What is the desirable limit for sulfates in drinking water?

Solution:

What type of column is observed if the slenderness ratio for a column is 100?

Solution:

To determine the strength of a material, what is calculated?

Solution:

To determine the endurance limit of a material, which of the following tests is conducted?

Solution:

Young's modulus of elasticity and Poisson's ratio of a material are 2 × 10⁵ MPa and 0.34 respectively. Determine the modulus of rigidity of the material.

Solution:

Which of the following statements describes a material's ability to resist deformation under stress?

Solution:

Consider the following:

σ₁ = Maximum value of principal stress (Algebraically)

σ₂ = Minimum value of principal stress (Algebraically)

What is the correct formula for the maximum shear stress?

Solution:

As soon as the external forces causing deformation in a perfectly elastic body are withdrawn, the elastic deformation disappears:

Solution:

What is the strain energy per unit volume if the shear stress for a material is given as 55 N/mm^2?
Take G = 80,000 N/mm^2 (up to 3 decimal places).

Solution:

Solution:

Related Question Sets:

Related Topics:

Strength-of-materials Questions Set 27:

What is the desirable limit for sulfates in drinking water?

Solution:

What type of column is observed if the slenderness ratio for a column is 100?

Solution:

To determine the strength of a material, what is calculated?

Solution:

To determine the endurance limit of a material, which of the following tests is conducted?

Solution:

Young's modulus of elasticity and Poisson's ratio of a material are 2 × 105 MPa and 0.34 respectively. Determine the modulus of rigidity of the material.

Solution:

Which of the following statements describes a material's ability to resist deformation under stress?

Solution:

Consider the following: σ1 = Maximum value of principal stress (Algebraically) σ2 = Minimum value of principal stress (Algebraically) What is the correct formula for the maximum shear stress?

Solution:

As soon as the external forces causing deformation in a perfectly elastic body are withdrawn, the elastic deformation disappears:

Solution:

What is the strain energy per unit volume if the shear stress for a material is given as 55 N/mm^2?Take G = 80,000 N/mm^2 (up to 3 decimal places).

Solution:

Solution:

Related Question Sets:

Related Topics:

Young's modulus of elasticity and Poisson's ratio of a material are 2 × 10⁵ MPa and 0.34 respectively. Determine the modulus of rigidity of the material.

Consider the following:

σ₁ = Maximum value of principal stress (Algebraically)

σ₂ = Minimum value of principal stress (Algebraically)

What is the correct formula for the maximum shear stress?

What is the strain energy per unit volume if the shear stress for a material is given as 55 N/mm^2?
Take G = 80,000 N/mm^2 (up to 3 decimal places).