Finals

Question 1

This will determine the strength of a material on its ability to sustain a load
without due deformation or failure.

Answer 1

Torsion

Question 2

A device that is used to measure changes in the length of an object

Answer 2

Extensometer

Question 3

When an external torque is applied to a shaft, it creates a corresponding
internal torque within the shaft.

Answer 3

Torsional shearing
stress

Question 4

It is a moment that tends to twist a member about its longitudinal axis.

Answer 4

Torque

Question 5

Defined as the work performed per unit of time.

Answer 5

Power

Question 6

Force parallel to the area resisting the force.

Answer 6

Shear Stress

Question 7

The angle θ through which the bar length L will twist.

Answer 7

Angle of Twist

Question 8

In most cases, load are perpendicular to the axis of the beam.

Answer 8

True HAHAHA

Question 9

Members that are slender and support loadings that are applied
perpendicular to their longitudinal axis.

Answer 9

Beams

Question 10

Usually long, straight prismatic members.

Answer 10

Beams

Question 11

Transverse loading causes only what?

Answer 11

Bending (M) and Shear
(V) in beam

Question 12

It has one or both of its ends freely extended over the supports.

Answer 12

Overhanging Beams

Question 13

Pinned at one end and roller supported at the other.

Answer 13

Simply supported beam

Question 14

The transverse loading of beam may consist of ______ & _______

Answer 14

Concentrated and
Distributed Loads

Question 15

Fixed at one end and free at the other.

Answer 15

Cantilever beam

Question 16

6 types of Beams

Answer 16

Simply supported beam
Overhanging beam
Cantilever beam
Continuous beam
Beam fixed at one end
and simply supported
at the other end
Fixed Beam

Question 17

The force that acts parallel to the cross-section of a structural element.
Obtained by summing forces perpendicular to the beam’s axis.

Answer 17

Shear force

Question 18

The bending moment at any given point of a beam is positive when the
external forces (loads and reactions) acting on the beam tend to bend the
beam.

Answer 18

Determinations of
shear force and bending
moment

Question 19

The shear at any given point of a beam is positive when the external forces
(loads and reactions) acting on the beam tend to shear off the beam.

Answer 19

Determinations of
shear force and bending
moment

Question 20

The shear at any given point of a beam is ________ when the external forces
(loads and reactions) acting on the beam tend to shear off the beam.

Answer 20

positive

Question 21

What are the external Forces

Answer 21

Loads and Reactions

Question 22

Engineers frequently make approximations or simplifications of the
loadings on a body in order that the stress produced in a structural member
or mechanical element can be analyzed in a single plane.

Answer 22

Plane Stress

Question 23

The general state of stress at a point is characterized by six independent
normal and shear stress components, which act on the faces of an element
of material located at the point.

Answer 23

Plane Stress

Question 24

When this is the case, the material is said to be subjected to plane stress.
Example: axial bars, beams in bending and circular members in torsion

Answer 24

Bending moment

Question 25

Obtained by summing moments about the sectioned end of the segment.

Answer 25

Bending moment

Question 26

The moment that occurs when an external force is applied to the element causing it to bend.

Answer 26

Bending moment

Question 27

These stresses act on principal planes where the shear stresses are zero.

Answer 27

Principal stress

Question 28

These stresses act on principal planes where the shear stresses are ______.

Answer 28

zero

Question 29

When a structural element is subjected to several types of loads acting simultaneously, say bending and torsion.

Answer 29

Principal stress

Question 30

True or false The maximum shear stress is equal to one half the difference of the principal stresses

Answer 30

True

Question 31

True or False Planes of maximum shear stress occur at 45° to the principal planes.

Answer 31

True

Question 32

Planes of maximum shear stress occur at 45° to the _______.

Answer 32

principal planes

Question 33

Planes of maximum shear stress occur at ______ to the principal planes.

Answer 33

45°

Question 34

True or False Shear stresses are zero on principal planes.

Answer 34

True

Question 35

True or False Principal stresses occur on mutually perpendicular planes.

Answer 35

True

Question 36

___________ occur on mutually perpendicular planes.

Answer 36

Principal stresses

Question 37

The displacement in the y direction of a cantilever beam with a concentrated load acting upward at the free end.

Answer 37

Deflection “v”

Question 38

A graphical representation of the transformation equations for plane stress problems. It is useful in visualizing the relationships between normal and shear stresses acting on a stress element at any desired orientation.

Answer 38

Mohr’s circle

Question 39

A graphical representation of the transformation equations for plane stress problems.

Answer 39

Mohr’s circle

Question 40

It is useful in visualizing the relationships between normal and shear stresses acting on a stress element at any desired orientation.

Answer 40

Mohr’s circle

Question 41

Mohr’s circle is useful in visualizing the relationships between ____&______ acting on a stress element at any desired orientation.

Answer 41

normal and shear stresses

Question 42

It is the angle between the x axis and the tangent to the deflection curve.

Answer 42

Angle of rotation/Slope

Question 43

The slope and deflection of beam caused by several different loads acting simultaneously can be found by superimposing the slopes and deflections caused by the loads acting separately.

Answer 43

Method of Superposition

Question 44

The slope and deflection of beam caused by several different loads acting simultaneously can be found by ______ the slopes and deflections caused by the loads acting separately.

Answer 44

superimposing

Question 45

This method entails obtaining the slope θ and the deflection v of the beam.

Answer 45

Method of successive integration

Question 46

The principle of superposition is valid under the following conditions: These requirements ensure that the differential equations of the deflection curve are ______.

Answer 46

linear

Question 47

True or false The principle of superposition is valid under the following conditions:  Hooke’s law holds for the material.

Answer 47

True

Question 48

True or false The principle of superposition is valid under the following conditions:  The deflection and rotations are small.

Answer 48

True

Question 49

True or false The principle of superposition is valid under the following conditions:  The presence of the deflection does not alter the actions of applied loads.

Answer 49

True

Question 50

The principle of superposition is valid under the following conditions: (3)

Answer 50

 Hooke’s law holds for the material.  The deflection and rotations are small.  The presence of the deflection does not alter the actions of applied loads.

Question 51

An angle in radians made by the tangent of the section with the original axis of the beam.

Answer 51

Slope

Question 52

It is the axis of a deflected beam.

Answer 52

Elastic curve

Question 53

The degree to which a part of a long structural element (such as beam) is deformed laterally under a load.

Answer 53

Deflection

Question 54

L shown in various parts in figure is called ‘______’.

Answer 54

span