stress on inclined plane

Which of the following is defined as the maximum normal stress at a point on an oblique plane through that point?

• Complementary stress

• Shearing stress

• Principal stress

• Thermal stress

What is the angle of inclination of the plane on which the shear stress is zero?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees

Which of the following equations can be used to calculate the maximum shear stress on an oblique plane?

• τ = σ1 + σ2

• τ = (σ1 - σ2)/2

• τ = σ1/2 + σ2/2

• τ = (σ1 + σ2)/2

What is the condition for a plane to be a principal plane?

• The normal stress must be maximum.

• The shear stress must be zero.

• The normal stress must be minimum.

• The shear stress must be maximum.

Which of the following statements is true for the principal stress?

• The shear stress on the principal planes is zero.

• The normal stress on the principal planes is minimum.

• The normal stress on the principal planes is maximum.

• The normal stress on the principal planes is zero.