CEMDEF40 Quiz 02

Determine of the outside diameter of hallow steel tube that will carry a tensile load of 500 kN at a stress of 140 MPa. Assume the wall thickness to be one-tenth of the outside diameter.

• 123 mm

• 113 mm

• 103 mm

• 93 mm

ME Board Exam April 1998:

A force of 10 N is applied to one end of a 10 in. diameter circular rod. Calculate stress.

• 0.20 kPa

• 0.05 kPa

• 0.10 kPa

• 0.15 kPa

What force is required to punch a 20-mm diameter hole through a 10-mm thick plate. The ultimate strength of the plate material is 450 MPa.

• 241 kN

• 283 kN

• 386 kN

• 252 kN

The compression test is carried on __________ materials.

• ductile

• brittle

• malleable

• plastic

When a material is loaded within elastic limit, the material will regain its shape and size when the load is removed.

• Agree

• Disagree

When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress occurs at a section inclined at __________ to the normal of the section.

• 0°

• 30°

• 45°

• 90°

A rectangular beam subjected to a bending moment is shown in the figure. The upper layer of the beam will be in tension.

• True

• False

The ratio of stress and strain is known as (a)   .

Two parallel, equal and opposite forces acting tangentially to the surface of the body is called as

• Complementary stress

• Compressive stress

• Shear stress

• Tensile stress

A test specimen is stressed slightly beyond the yield point and then unloaded.

Its yield strength will...

• Decrease

• Remains same

• Increase

• Becomes equal to the ultimate tensile strength.