STRUCTURAL QUIZ #2

Moment Arm

It is the shortest distance of a force from the point or axis.

Force

It is the action of one body upon another due to direct contact and due to magnetic or gravitational attraction.

Uniform Load

A kind of load which has a series of concentrated loads with uniform magnitude.

Howe Truss

Identify the type of truss as shown

Scalar

It is a physical quantity that can be described by a single element of a number field such as a real number, or accompanied by units of measurement.

Dynamics

A study applied on a body inducing any motion.

Principle of Transmissibility

It is a principle wherein it states that the external effect of a force on a body acted upon is independent of the point of application of the force but the same for all points along its line of action.

Bowstring

Identify the type of truss as shown

Equilibrium

It is a state in which the resultant of the force system that acts on a body vanishes.

Magnitude

It is the amount of force.

Truss

It is an articulated structure composed of links or bars assumed to be connected by frictionless pins at the joints and arranged so that an area enclosed within the boundaries of the structure is subdivided by the bars into geometric figures which are usually triangles.

Stress

It is the unit strength of any element.

Point Load

A kind of load that is concentratedly imposed at a point on a free body diagram.

Varying Line Load

A kind of load that consists of a series of concentrated loads with varying magnitude.

Vector

A quantity that has both magnitude and direction.

Ultimate Strength

The maximum ordinate in the stress-strain diagram is the __________ or tensile strength.

Engineering Mechanics

It is a branch of Engineering that deals with external forces of an assumably rigid bodies.

Direction

It is orientation of the path where the force will be imposed.

Modulus of Elasticity

It is the ratio between the unit stress and unit deformation caused by stress

Stress

It is the unit deformation of a material subjected to an applied load.

Pratt Truss

Identify the type of truss as shown

Seismograph

It is an instrument at the ground surface which records the electrical effects transmitted to it by a seismometer and thus shows the times and amplitude of earth shocks

Yield Point

It is the point at which the material will have an appreciable elongation or yielding without any increase in load.

Strength of Materials

It is a branch of applied mechanics that deals with the behavior of solid bodies subjected to various types of loading.

Crescent Truss

Identify the type of truss as shown

Moment

It is the rotation of a force at a point or an axis.

Moment of Inertia

It is a quantity of a body’s tendency to resist angular acceleration.

Strain Gauge

It is the instrument used to measure a minute deformation.

Rupture Strength

It is the strength of the material at rupture which is also known as the breaking strength.

Deformable Body

It is defined as a body on which the distance between two points changes under action of some forces when applied on it.

Axial Stress

It is a stress that develops to resist axial force.

Elasticity

It is a material property wherein it enables deformity upon the force applied and recovers after removing such force.

Malleability

It is a material property wherein it enables it to deform under compressive strength.

Toughness

The ability to absorb energy before rupturing.

Parker Truss

Identify the type of truss as shown

Elastic Deformation

It is a temporary change in the shape of the body produced by a stress less than the elastic limit of the material.

Rigid Body

It is defined as a body on which the distance between two points never changes whatever be the force applied on it.

Elastic Limit

It is the limit beyond which the material will no longer go back to its original shape when the load is removed

Centroid

It is the center of mass of a geometric object of uniform density.

Baltimore Truss

Identify the type of truss as shown

Compression

A type of axial load wherein it is an act of shortening or state of pushing together.

Fatigue

A type of material failure wherein it failed to maintain elastic limit subjected to repeated series of stress.

Normal Stress

It is the stress that occurs when the surface of the body is loaded by an axial force.

Tangential Stress

A force acting in a generally horizontal direction

Strain

It is the change in the size or shape of a body due to the deforming force.

K-Truss

Identify the type of truss as shown

Stress

It is the applied force or system of forces that tends to deform a body.

Permanent Set

It is the inelastic strain in a material

Tensile Stress

It is the stress state leading to expansion.

Tension

A type of axial load wherein it is an act of stretching or state of pulling apart.