Past Boards Objective Questions Flashcards
(50 cards)
1
Q
- A mass hangs on two PARALLEL springs. The individual spring stiffness are K; and K; What is the total composite spring constant ?
A
K1 + K2
2
Q
- Determine the spring constant for the system of springs in series
A
Product over Sum:
K1K2/(K1 + K2)
3
Q
- Identify the state of stress in a material described as follows: Stress at Failure
A
Rupture Strength
4
Q
- Highest Ordinate in Stress-Strain diagram
A
Ultimate Strength
5
Q
- An Appreciable elongation or yielding of the material without any corresponding increase of load.
A
Yielding Strength
6
Q
- What do you call the retarding force acting opposite a body in motion
A
Kinetic Friction
7
Q
- It is the displacement of one level relative to the level above or below
A
Story Drift
8
Q
- Occurs when the center of mass and rigidity do not coincide
A
Torsional Shear Stress
9
Q
- If the structure is subjected to a cycle of stresses and ____, it causes the beam to have sudden ultimate structure
A
Fatigue
10
Q
- It is measured by the Richter scale
A
Magnitude of an Earthquake
11
Q
- it is measured by a Seismometer
A
Actual Displacement
12
Q
- besides the epicenter, it describes the location of the Earthquake
A
Focal depth
13
Q
- Identify the material property described by the following material : The composite material exhibits elastic
properties in one direction different from that in the perpendicular direction.
A
Orthotropic
14
Q
- Identify the material property described by the following material : The material has the same composition at every point but the elastic may not be the same in all directions.
A
Homogenous
15
Q
- Liquefaction is best described as:
A
A sudden drop in the ‘shear strength’ of soil
16
Q
- Which refers to the rigidity of a structure ?
A
Reciprocal of Deflection
17
Q
- Identify the following : It is the point through which the resultant of the resistance to the applied lateral force acts.
A
Center of Rigidity
18
Q
- Identify the following : It is the point through which the applied Seismic Force acts
A
Center of Mass
19
Q
- Identify the following : It refers to Flexibility of a Structure
A
Reciprocal of Stiffness
20
Q
- One in which the lateral stiffness is less than 70% of the stiffness of the story above is called:
A
Soft Story
21
Q
- A lateral displacement of one level relative of the level above or below is called:
A
Story Drift
22
Q
- Identify the following : It is the point through which the resultant of the resistance to the applied force acts
A
Center of Rigidity
23
Q
- Identify the following : It is the distance between the center of rigidity and center of mass
A
Eccentricity
24
Q
- Which material property is referred to by the following : The material has the ability to absorb energy in the Plastic Range
A
Toughness
25
25. Which material property is referred to by the following : The material has the ability to absorb energy in the Elastic Range
Resilience
26
26. Which material property is referred to by the following : The material has the ability to defuse the Plastic Range without Breaking
Ductility
27
27. Identify the Property of the material described by the following : The material deforms considerably even with a slight increase in stress
Yielding
28
28. identify the Property of the material described by the following : The material regains its original dimensions When the load is removed.
Elasticity
29
29. Identify the Property of the material described by the following : The material deforms in the Plastic range without breaking.
Ductility
30
30. Which of the following refers to the flexibility of a structure ?
A. Composite Stiffness
B. Rigidity
C. inverse Stiffness
D. static Deflection
Inverse of Stiffness
31
31. Which material property is described by the following : The composite material exhibits elastic properties in one direction Different from that in the perpendicular direction.
Orthotropic
32
32. Which material property is described by the following : The matenal has the same composition at every point But the elastic properties may not be the same In all direction.
Homogenous
33
33. Which material property is described by the following : The material has the same elastic properties in all directions.
isotropic
34
34. Which material has the same compression at any point ?
Homogeneous
35
35. What is the term which refers to the ability of a material to deform in the plastic range without breaking ?
Ductility
36
36. What do you call the ability of a material to absorb energy in the plastic range ?
Toughness
37
37. Which of the following terms is described herein ? Stressing high strength steel wires before concrete hardens.
Pre-Tensioning
38
38. Which of the following terms is described herein ? Stressing high strength steel after the concrete has been cast and has attained sufficient strength.
Post-Tensioning
39
39. Which of the following terms is described herein ? Loss of stress that takes place with the passage of time as concrete is held at a constant strain.
Relaxation
40
40. Which structural member has the ratio of its unsupported height to its least lateral dimension of not less than 3 and is used primarily to support Axial Load ?
Column
41
41. What do you call the force which determines whether the body will be in equilibrium or will have a varying state of motion.
Resultant
42
42. Identify the principle used in equations related to the deformation of axially loaded materials : That the
stress is proportional to the strain within the Elastic Region.
Hooke’s Law
43
43. Identify the principle used in equations related to the deformation of axially loaded materials : That in the deformation of axially loaded members, the ratio of the lateral to the longitudinal strain is constant.
Poisson’s Ratio
44
44. Identify the principle used in equations related to the deformation of axially loaded materials : That within
the elastic range, it is the constant of proportionality that defines the linear relationship between stress and strain.
Young’s Modulus
45
46. Which term refers to the force generated by a body at rest ?
Static
46
46. Which terms refers to the force generated by a body in motion ?
Dynamic
47
47. What is the term for the value beyond which the stress is no longer proportional to the strain.
Proportional Limit
48
48. Which property of a material enables it to under large permanent strains before failure
Ductility
49
It occurs when a building period coincides with the earthquake period.
resonance
50
when a material has to support a load for a *long period of time*, what causes it to continue to deform until a *sudden fracture* occurs?
Creep
