Manufacturing - 9

During a tensile test on a ductile material ____________

• Nominal stress at fracture is higher than the ultimate stress

• True stress at fracture is higher than the ultimate stress

• True stress a fracture is the same as the ultimate stress

• None of the mentioned

When equal and opposite forces applied to a body, tend to elongate it, the stress so produced, is called ____________

• Shear stress

• Compressive stress

• Tensile stress

• Transverse stress

In a tensile test, near the elastic limit zone ____________

• Tensile stress increases in linear proportion to the stress

• Tensile stress increases at a faster rate

• Tensile stress decreases at a faster rate

• None of them

The phenomenon of slow growth of strain under a steady tensile stress is called ____________

• Yielding

• Creeping

• Breaking

• None of the mentioned

The slope of the stress-strain curve in the elastic deformation region is ____________

• Elastic modulus

• Plastic modulus

• Poisson’s ratio

• None of the mentioned

What is the stress-strain curve?

• It is the percentage of stress and stain

• It is the relationship between stress and strain

• It is the difference between stress and strain

• None of the mentioned

Which point on the stress strain curve occurs after the proportionality limit?

• Upper yield point

• Lower yield point

• Elastic limit

• Ultimate point

Which point on the stress strain curve occurs after the lower yield point?

• Yield plateau

• Upper yield point

• Ultimate point

• None of the mentioned

Which point on the stress strain curve occurs after yield plateau?

• lower yield point

• Upper yield point

• Ultimate point

• Breaking point

Where is the necking region?

• The area between lower yield point and upper yield point

• The area between the plastic limit and elastic limit

• The area between the ultimate point and initial point

• The area between the ultimate point and rupture