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Strength-of-materials Questions Set 21:

Quiz Mode

On what does stress always act?

area

volume

surface

area and point

Solution:

What is the ratio of maximum shear stress to average shear stress in the case of a circular cross-section?

3/2

2/3

4/3

3/4

Solution:

What is the meaning of J/R in the torsion equation: T/J = τ/R = cθ/l?

Shear modulus

Section modulus

Polar modulus

None of these

Solution:

In polar moment of inertia, how can we find I_zz if I_xx and I_yy are two mutually perpendicular axes?

I_xx x I_yy

I_xx - I_yy

I_xx + I_yy

I_xx ÷ I_yy

Solution:

Find the moment of inertia (Iyy) of a rectangle, if the breadth is 12 m (Y direction) and the depth is 10 m (X direction).

120 m⁴

1000 m⁴

1200 m⁴

1.2 m⁴

Solution:

In a cantilever beam with a concentrated downward load, the maximum tensile stress occurs at:

Top fiber at mid-span

Bottom fiber at mid-span

Bottom fiber at the support

Top fiber at the support

Solution:

A steel bar with a length of 5 mm is heated from 15°C to 40°C. Since the bar is free to expand, what type of stress will develop in the bar?

No stress

Shear stress

Tensile stress

Compressive stress

Solution:

What is the graphical representation of variation of axial load on the y-axis and position of cross-section along the x-axis called?

Stress-strain diagram

Shear force diagram

Bending moment diagram

Axial thrust diagram

Solution:

What happens to the elastic moduli of an anisotropic material when additional stresses are applied?

The elastic moduli remain constant with additional stresses.

There is no relation between elastic moduli and additional stresses.

The elastic moduli vary with additional stresses.

There is no such thing as additional stresses.

Solution:

We have been given a steel rod with a diameter of 8 mm and length of 1.2 m. The rod is heated from a temperature of 30°C to 100°C. The Young's modulus of elasticity is 210 GPa, and the coefficient of linear expansion is 11 × 10^-6 per °C. Given that the rod is not free to expand, calculate the thermal stress developed in the rod.

156.08 MPa (compressive)

156.08 MPa (tensile)

161.70 MPa (tensile)

161.70 MPa (compressive)

Strength-of-materials Questions Set 21:

On what does stress always act?

Solution:

What is the ratio of maximum shear stress to average shear stress in the case of a circular cross-section?

Solution:

What is the meaning of J/R in the torsion equation: T/J = τ/R = cθ/l?

Solution:

In polar moment of inertia, how can we find I_zz if I_xx and I_yy are two mutually perpendicular axes?

Solution:

Find the moment of inertia (Iyy) of a rectangle, if the breadth is 12 m (Y direction) and the depth is 10 m (X direction).

Solution:

In a cantilever beam with a concentrated downward load, the maximum tensile stress occurs at:

Solution:

A steel bar with a length of 5 mm is heated from 15°C to 40°C. Since the bar is free to expand, what type of stress will develop in the bar?

Solution:

What is the graphical representation of variation of axial load on the y-axis and position of cross-section along the x-axis called?

Solution:

What happens to the elastic moduli of an anisotropic material when additional stresses are applied?

Solution:

Solution:

Related Question Sets:

Related Topics:

Strength-of-materials Questions Set 21:

On what does stress always act?

Solution:

What is the ratio of maximum shear stress to average shear stress in the case of a circular cross-section?

Solution:

What is the meaning of J/R in the torsion equation: T/J = τ/R = cθ/l?

Solution:

In polar moment of inertia, how can we find Izz if Ixx and Iyy are two mutually perpendicular axes?

Solution:

Find the moment of inertia (Iyy) of a rectangle, if the breadth is 12 m (Y direction) and the depth is 10 m (X direction).

Solution:

In a cantilever beam with a concentrated downward load, the maximum tensile stress occurs at:

Solution:

A steel bar with a length of 5 mm is heated from 15°C to 40°C. Since the bar is free to expand, what type of stress will develop in the bar?

Solution:

What is the graphical representation of variation of axial load on the y-axis and position of cross-section along the x-axis called?

Solution:

What happens to the elastic moduli of an anisotropic material when additional stresses are applied?

Solution:

Solution:

Related Question Sets:

Related Topics:

In polar moment of inertia, how can we find I_zz if I_xx and I_yy are two mutually perpendicular axes?