Unit 4 POE Summative

Beam A and B are the same material and same dimensions. What distinguishes beam A from beam B?

• Beam A will have a greater resistance to bending because it has a lower moment of inertia.

• Beam A will have a greater resistance to bending because it has a higher moment of inertia.

• Beam B will have a greater resistance to bending because it has a lower moment of inertia.

• Beam B will have a greater resistance to bending because it has a higher moment of inertia.

Correct formula for calculating beam deflection:

• 
• 
• 
• 

Given the information above, calculate the beam deflection for Beam A:

• .12 inches

• 1.39 inches

• .53 inches

• .24 inches

Tags

NGSS.HS-PS2-3

Point C represents what on the stress-strain curve?

• Elastic Limit

• Ultimate Tensile Strength

• Necking

• Failure

A free-body diagram represents all of the following except

• forces as vectors
• forces exerted by the object.
• the object
• forces exerted on the object.

What units is Modulus of Elasticity measured in?

• in⁴

• in²

• psi

• lbf

Using the stress-strain curves provided above, which of the two materials shown is more brittle?

• Material #1

• Material #2

What does point A, B, D, E represent, respectively?

• A: Yield Strength, B: Modulus of Elasticity, D: Tensile Strength, E: Strength at Failure

• A: Modulus of Elasticity, B: Yield Strength, D: Tensile Strength, E: Strength at Failure

• A: Modulus of Elasticity, B: Yield Strength , D: Tensile Strength, E: Strength at Failure

• A: Yield Strength, B: Modulus of Elasticity, D: Strength at Failure, E: Tensile Strength

An aluminum sample with a diameter of 1.0 in has been tensile tested. Calculate the engineering stress for an applied load of 4020 lbs.

• 5,118 psi

• 3,660 psi

• 7,960 psi

• 1,990 psi

• 2,542 psi

Tags

NGSS.HS-ETS1-3

Which of the following could never be negative?

• a distance
• a velocity
• a displacement
• a vector