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PSAD > Past Boards Objective Questions > Flashcards

Past Boards Objective Questions Flashcards

1
Q
  1. 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

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2
Q
  1. Determine the spring constant for the system of springs in series
A

Product over Sum:
K1K2/(K1 + K2)

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3
Q
  1. Identify the state of stress in a material described as follows: Stress at Failure
A

Rupture Strength

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4
Q
  1. Highest Ordinate in Stress-Strain diagram
A

Ultimate Strength

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5
Q
  1. An Appreciable elongation or yielding of the material without any corresponding increase of load.
A

Yielding Strength

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6
Q
  1. What do you call the retarding force acting opposite a body in motion
A

Kinetic Friction

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7
Q
  1. It is the displacement of one level relative to the level above or below
A

Story Drift

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8
Q
  1. Occurs when the center of mass and rigidity do not coincide
A

Torsional Shear Stress

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9
Q
  1. If the structure is subjected to a cycle of stresses and ____, it causes the beam to have sudden ultimate structure
A

Fatigue

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10
Q
  1. It is measured by the Richter scale
A

Magnitude of an Earthquake

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11
Q
  1. it is measured by a Seismometer
A

Actual Displacement

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12
Q
  1. besides the epicenter, it describes the location of the Earthquake
A

Focal depth

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13
Q
  1. 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

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14
Q
  1. 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

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15
Q
  1. Liquefaction is best described as:
A

A sudden drop in the ‘shear strength’ of soil

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16
Q
  1. Which refers to the rigidity of a structure ?
A

Reciprocal of Deflection

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17
Q
  1. Identify the following : It is the point through which the resultant of the resistance to the applied lateral force acts.
A

Center of Rigidity

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18
Q
  1. Identify the following : It is the point through which the applied Seismic Force acts
A

Center of Mass

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19
Q
  1. Identify the following : It refers to Flexibility of a Structure
A

Reciprocal of Stiffness

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20
Q
  1. One in which the lateral stiffness is less than 70% of the stiffness of the story above is called:
A

Soft Story

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21
Q
  1. A lateral displacement of one level relative of the level above or below is called:
A

Story Drift

22
Q
  1. 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
  1. Identify the following : It is the distance between the center of rigidity and center of mass
A

Eccentricity

24
Q
  1. Which material property is referred to by the following : The material has the ability to absorb energy in the Plastic Range
A

Toughness

25
Q
  1. Which material property is referred to by the following : The material has the ability to absorb energy in the Elastic Range
A

Resilience

26
Q
  1. Which material property is referred to by the following : The material has the ability to defuse the Plastic Range without Breaking
A

Ductility

27
Q
  1. Identify the Property of the material described by the following : The material deforms considerably even with a slight increase in stress
A

Yielding

28
Q
  1. identify the Property of the material described by the following : The material regains its original dimensions When the load is removed.
A

Elasticity

29
Q
  1. Identify the Property of the material described by the following : The material deforms in the Plastic range without breaking.
A

Ductility

30
Q
  1. Which of the following refers to the flexibility of a structure ?

A. Composite Stiffness
B. Rigidity
C. inverse Stiffness
D. static Deflection

A

Inverse of Stiffness

31
Q
  1. Which material property is described by the following : The composite material exhibits elastic properties in one direction Different from that in the perpendicular direction.
A

Orthotropic

32
Q
  1. 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.
A

Homogenous

33
Q
  1. Which material property is described by the following : The material has the same elastic properties in all directions.
A

isotropic

34
Q
  1. Which material has the same compression at any point ?
A

Homogeneous

35
Q
  1. What is the term which refers to the ability of a material to deform in the plastic range without breaking ?
A

Ductility

36
Q
  1. What do you call the ability of a material to absorb energy in the plastic range ?
A

Toughness

37
Q
  1. Which of the following terms is described herein ? Stressing high strength steel wires before concrete hardens.
A

Pre-Tensioning

38
Q
  1. Which of the following terms is described herein ? Stressing high strength steel after the concrete has been cast and has attained sufficient strength.
A

Post-Tensioning

39
Q
  1. 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.
A

Relaxation

40
Q
  1. 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 ?
A

Column

41
Q
  1. What do you call the force which determines whether the body will be in equilibrium or will have a varying state of motion.
A

Resultant

42
Q
  1. 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.
A

Hooke’s Law

43
Q
  1. 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.
A

Poisson’s Ratio

44
Q
  1. 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.
A

Young’s Modulus

45
Q
  1. Which term refers to the force generated by a body at rest ?
A

Static

46
Q
  1. Which terms refers to the force generated by a body in motion ?
A

Dynamic

47
Q
  1. What is the term for the value beyond which the stress is no longer proportional to the strain.
A

Proportional Limit

48
Q
  1. Which property of a material enables it to under large permanent strains before failure
A

Ductility

49
Q

It occurs when a building period coincides with the earthquake period.

A

resonance

50
Q

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?

A

Creep

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