Mechanics

Question 1

What are the different types of loads that can act on a structure?

Answer 1

The different types of loads that can act on a structure are dead loads, live loads, wind loads, snow loads, and seismic loads.

Question 2

What is a beam?

Answer 2

A beam is a structural element that is designed to resist bending and carry loads.

Question 3

What is statics?

Answer 3

Statics is the branch of mechanics that deals with the analysis of forces acting on physical systems at rest.

Question 4

What is stress in engineering?

Answer 4

Stress in engineering is the internal force that resists deformation in a material.

Question 5

What is strain in engineering?

Answer 5

Strain in engineering is the measure of deformation or displacement of a material in response to stress.

Question 6

True or False: Dead loads are constant and permanent loads on a structure.

Answer 6

True

Question 7

What type of load is caused by the weight of the structure itself?

Answer 7

Dead load

Question 8

What type of load is caused by moving or temporary forces on a structure?

Answer 8

Live load

Question 9

What type of load is caused by the force of the wind on a structure?

Answer 9

Wind load

Question 10

What type of load is caused by the force of an earthquake on a structure?

Answer 10

Seismic load

Question 11

What is the formula to calculate stress?

Answer 11

Stress = Force / Area

Question 12

What is the formula to calculate strain?

Answer 12

Strain = Change in length / Original length

Question 13

What is the relationship between stress and strain known as?

Answer 13

Stress-strain curve

Question 14

What is the modulus of elasticity?

Answer 14

The modulus of elasticity is a material property that describes its ability to deform under stress.

Question 15

What is the equation relating stress, strain, and modulus of elasticity?

Answer 15

Stress = Modulus of elasticity x Strain

Question 16

What is the maximum stress a material can withstand without permanent deformation called?

Answer 16

Yield stress

Question 17

What is the factor of safety in engineering design?

Answer 17

The factor of safety is a design factor that accounts for uncertainties and variations in material properties.

Question 18

What is the bending moment in a beam?

Answer 18

The bending moment in a beam is the internal moment that causes bending deformation.

Question 19

What is the shear force in a beam?

Answer 19

The shear force in a beam is the internal force that causes shearing deformation.

Question 20

What is the equation to calculate bending moment?

Answer 20

Bending Moment = Force x Distance

Question 21

What is the equation to calculate shear force?

Answer 21

Shear Force = Rate of change of Bending Moment

Question 22

What is the neutral axis in a beam?

Answer 22

The neutral axis in a beam is the axis where there is no stress or strain.

Question 23

What is the formula to calculate deflection in a beam?

Answer 23

Deflection = (Force x Distance^3) / (3 x Modulus of elasticity x Moment of inertia)

Question 24

What is the equation to calculate maximum bending stress in a beam?

Answer 24

Maximum Bending Stress = (Bending Moment x Distance to Neutral Axis) / Section Modulus