SEC Past Boards

Question 1

Limit beyond which the material will no longer go back to it’s original shape when load is removed.

Answer 1

Elastic Limit

Question 2

Maximum Stress that may be develop such that there is no permanent or residual deformation when load is entirely removed.

Answer 2

Elastic Limit

Question 3

Point at which the material will have an appreciable elongation or yielding without any increase of load.

Answer 3

Yield Point

Question 4

Maximum ordinate in Stress-Strain diagram in the U.S. Also called as Tensile Strength.

Answer 4

Ultimate Strength

Question 5

Strength of Material at Rapture.

Also called Breaking Strength.

Answer 5

Rapture Strength

Question 6

Ability of material to absorb energy without creating a permanent distortion.

Answer 6

Resilience

Question 7

Ability of material to absorb energy without causing it to break.

Answer 7

Toughness

Question 8

Actual stress of material under a given loading.

Answer 8

Working Stress

Question 9

Maximum safe stress that a material can carry.

Answer 9

Allowable Stress

Question 10

Ratio of ultimate of tensile strength to allowable strength.

Answer 10

Factor of Safety

Question 11

Occurs at point of zero shear.

Answer 11

Maximum Moment

Question 12

For beams loaded with concentrated load, usually occur under a concentrated load and so the maximum moment.

Answer 12

Point of zero shear

Question 13

The ability of the material to absorb energy in the elastic range.

Answer 13

Resilience

Question 14

The term which refers to the ability of a material to reform in the plastic range without breaking.

Answer 14

Ductility

Question 15

The material composition is the same but it’s mechanical properties are different in every direction.

Answer 15

Orthotropic Material

Question 16

Refers to the tendency of solid materials to return to their original shape after being force are applied to them. When the forces are removed, the object will return to its initial shape and size.

Answer 16

Elasticity

Question 17

Refers to the stress at which a material begins to deform plastically.

Answer 17

Yielding

Question 18

It is the point through which the resultant of the resistance to the applied lateral force acts.

Answer 18

Center of rigidity

Question 19

The point of structure where the resultant vertical force acts.

Answer 19

Center of mass

Question 20

The distance between the center of mass and center of rigidity.

Answer 20

Eccentricity

Question 21

What can be measured by seismometer?

Answer 21

Ground Displacement

Question 22

Refers to the flexibility of a structural system.

Answer 22

Inverse of Stiffness

Question 23

The portion of the stress-strain curve beyond which the stress is no longer proportional to the strain.

Answer 23

Proportional Limit

Question 24

Materials having the same composition at any point.

Answer 24

Homogeneous

Question 25

Material property which enables it to under large permanent strains before failure.

Answer 25

Ductility

Question 26

Forces generated by bodies in motion.

Answer 26

Dynamic

Question 27

A time-dependent prestress loss in pretensioned concrete.

Answer 27

Relaxation

Question 28

Tendons are stressed before concrete is poured.

Answer 28

Pre-tensioning

Question 29

Tendons are stressed after concrete has hardened.

Answer 29

Post-tensioning

Question 30

The ability of a deformed material body to return to its original shape and size when the forces causing the deformation are removed.

Answer 30

Elasticity

Question 31

The ability of the material to deform under tensile stress.

Answer 31

Ductility

Question 32

The ability of material to absorb energy when it is deformed elastically, and release that energy upon unloading.

Answer 32

Resilience

Question 33

The ability of a material to absorb energy and plastically deform without fracturing.

Answer 33

Toughness

Question 34

A material having the same strength at any point.

Answer 34

Homogeneous