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ES (AUSAT) EXAM WITH CORRECT ACTUAL
QUESTIONS AND CORRECTLY WELL
DEFINED ANSWERS LATEST 2025 ALREADY
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factor of safety - ANSWERS-The ratio of this strength (ultimate or yield strength) to allowable strength is called the _______.
Proportional limit / Hooke's Law - ANSWERS-From the origin O to the point called proportional limit, the stress-strain curve is a straight line, the stress is directly proportional to strain
Modulus of Elasticity E or Young's Modulus - ANSWERS-The constant of proportionality k is called the ________.
Poisson's ratio - ANSWERS-When a bar is subjected to a tensile loading there is an increase in length of the bar in the direction of the applied load, but there is also a decrease in a lateral dimension perpendicular to the load; The ratio of the sidewise deformation to the longitudinal deformation
shear strain - ANSWERS-The change in angle at the corner of an original rectangular element is called the _________.
Thermal stress - ANSWERS-In some cases where temperature deformation is not permitted, an internal stress is created
∑Fx and ∑Fy - ANSWERS-represent sums of x and y components of all the forces
∑MO - ANSWERS-represents the sum of the couple moments and moments of the force components
Completely constrained - ANSWERS-Rigid body could not possibly move
Partially constrained - ANSWERS-Constraints are not sufficient to keep the body from moving
Statically determinate - ANSWERS-When the unknowns could be solved by equations of equilibrium
Statically indeterminate - ANSWERS-When there are more unknowns than equilibrium equations
At both supports - ANSWERS-A simply supported beam carrying a uniform load of w will have a maximum value of shear at this section
Moment Transmissibility - ANSWERS-That principle where an external force acting on a body may be transmitted anywhere along its line of action without changing other external forces also acting on the body
Bending force - ANSWERS-A force in which components of the total resistance causes sliding of the exploratory section
Creep - ANSWERS-That property which causes some materials under constant stress to deform slowly but progressively over a period of time
Neutral axis - ANSWERS-An imaginary line in a beam, shaft, or other member where there is no stress or deformation that takes place
Concentrated load - ANSWERS-The notation P in an idealized beam diagram denotes
Static equilibrium - ANSWERS-A condition in which forces are in a state of rest are acting in opposite direction of the same magnitude
Shearing stress - ANSWERS-A type of stress which acts parallel to the stressed surface as in beam characterized by sliding of members past each other
Transverse load - ANSWERS-A load that is applied perpendicular to the longitudinal axis of a structural member that produces bending and shear
Structural System Components - ANSWERS-Structural elements such as beams, columns, girders, trusses, etc.
Locus - ANSWERS-The point at which the axis of moment intersects the plane of the forces causing a moment
Strength - ANSWERS-The ability of a material to resist stress without failure
Ductility - ANSWERS-That property of a material that enables it to be drawn permanently through great change without rupture, as, for example copper being drawn into a wire
Stress - ANSWERS-It is defined as the resistance to external forces; usually expressed in KPa, MPa, N/m2, kg/m2, lbs/ft2, etc
24k kN - ANSWERS-A simply supported beam carries a uniform load of 8 kN/m over a span of 6m. What are the values of the reactions of both supports?
S = P/A - ANSWERS-The standard formula for direct stress
Inflection point - ANSWERS-A point in a shear (V) and moment (M) diagram at which beam changes curvature from convex to concave and vice versa as it deflects under a transverse load
3 kN - ANSWERS-What is the total load of a uniformly varying load of 3kN/m over a span of 2m?
0 kN - ANSWERS-A concentrated load of 20 kN is placed at mid-span of a simply supported beam. Its total span is m. What is the value of the maximum shear?
AT = Sax - ANSWERS-The formula for centroid of a composite area
Torsion - ANSWERS-A twisting force
Compressive Stress - ANSWERS-In truss stress analysis, the top chords of a typical Howe truss is subjected to this kind of stress
35 kN - ANSWERS-The total weight of a non-uniform load (trapezoidal loading) of w=5 kN/m and w2=0 kN/m over a span of 5m
Cantilever beam - ANSWERS-A type of beam loading system where the beam projects from a single fixed end; moment about this point occurs
Yield point - ANSWERS-the point at which the material will have an appreciable elongation or yielding without any increase in load
Bending moment - ANSWERS-An external moment tending to cause part of a structure to rotate or bend, equal to the algebraic sum of the moments about the neutral axis of the section under consideration
Live load - ANSWERS-Any dynamic or moving load on a structure resulting from occupants, movable equipment and furnishings; it typically acts downward
Compressive force - ANSWERS-An applied force which produces or tends to produce compression in an elastic material
Diagonals - ANSWERS-The location of the centroid of a rectangular plane figure is located at the intersection of theses.
Top segment at mid-span - ANSWERS-In a simply supported beam, this part of the beam is subjected to maximum compressive stress
Shear - ANSWERS-A phenomenon in a beam where parallel planes slide relative to each other so that it remains parallel
Axial load - ANSWERS-A compressive or tensile load acting along the longitudinal axis of a structural member which produces axial stress without bending, torsion or shear
Rupture strength - ANSWERS-The strength of the material at rupture. This is also known as the breaking strength
Working stress - ANSWERS-is defined as the actual stress of a material under a given loading
allowable stress - ANSWERS-The maximum safe stress that a material can carry is termed as the __________.
Normal Force (Axial Force) - ANSWERS-component measure the pulling (or pushing) action perpendicular to the section denoted by P
Shear force - ANSWERS-these are the components of the total resistance to sliding the portion to one side of the section past the other denoted by V
Torque - ANSWERS-component measures the resistance to twisting the member and is commonly given the symbol T
Bending moments - ANSWERS-these components measure the resistance bending the member and often denoted by M
Stress - ANSWERS-is expressed as the ratio of the applied force divided by the resisting area
or
σ = Force / Area, Unit: Newton/m2 or Pa (SI), Pound/ in2 or psi (English)
Tensile stress - ANSWERS-applied to bar tends the bar to elongate while
compressive stress - ANSWERS-tend to shorten the bar
flexural or bending stresses - ANSWERS-Stresses caused by the bending moment are known as _____.
center of gravity - ANSWERS-Forces can be replace by a single equivalent force equal to the weight of the body and applied at the _______ for the body.
centroid of an area - ANSWERS-is analogous to the center of gravity of a body. The concept of the first moment of an area is used to locate the centroid.
