Question

Q3: According to your textbook, what is the coefficient of viscosity for water at 100°C? Give your answer in terms of Pa·s.

Q4: A tensile test uses a test specimen that has a gage length of 50 mm and an area = 211 mm². During the test, the specimen yields under a load of 95,191 N. The corresponding gage length = 50.24 mm - this is at the 0.2 percent yield point. The maximum load of 160,342 N is reached at a gage length = 64 mm. Fracture occurs at a gage length of 72 mm. If the speciman necked to an area of 113.7 mm² determine the percent reduction in area - enter your answer as a whole number, not as a fraction.

Q5: A tensile test uses a test specimen that has a gage length of 50 mm and an area = 217 mm². During the test, the specimen yields under a load of 98,068 N. The corresponding gage length = 50.32 mm - this is at the 0.2 percent yield point. The maximum load of 165,736 N is reached at a gage length = 63 mm. If fracture occurs at a gage length of 67 mm, determine the yield strength in MPa.

Q6: In a torsion test, a torque of 5,468 ft-lb is applied which causes an angular deflection = 3° on a thin-walled tubular specimen whose radius = 1.2 in, wall thickness = 0.02 in, and gage length = 14 in. Determine the shear stress.

Q7: A fiberglass composite is composed of a matrix of vinyl ester and reinforcing fibers of E-glass. The volume fraction of E-glass is 36%. The remainder is vinyl ester. The density of the vinyl ester is 0.857 g/cm³, and its modulus of elasticity is 3.23 GPa. The density of E-glass is 3.071 g/cm³, and its modulus of elasticity is 70 GPa. A section of composite 1.00 cm by 25.00 cm by 200.00 cm is fabricated with the E-glass fibers running longitudinal along the 200 cm direction. Assume there are no voids in the composite. Determine the modulus of elasticity of the composite in GPa.

Q8: Annual production quantities between 1 to 100 units per year are generally classified as _____ production volumes. a) hyper b) low c) medium d) high

Q9: Groover suggests all manufactured goods can be classified into two major categories. TRUE or FALSE

Q10: The covalent bond is one where electrons are shared between atoms in their outermost shells to achieve a stable set of eight electrons. TRUE or FALSE

Q12: Which of the following materials are used as fibers in fiber reinforced plastics (four correct answers)?

- cast iron

- aluminum oxide

- E-Glass

- Silicon

-Kevlar

-polyester

-boron

-epoxy

Answer 1

Solution to Q3:

Solution to Q4: