Test 1 Flashcards
The moment of inertia of a rectangle whose base is
“b” and height “h” about its base is
A. bh3/12
B. bh/36
C. bh3/3
D. bh2/4
C
The maximum stress induced in a material when subjected to alternating or repeated loading without causing failure.
A. elastic limit
B. proportional limit
C. rupture·strength
D. endurance limit
D
The total deformation measured in the direction of the
line of stress.
A. Axial deformation
B: elongation
C. strain
D. unit stress
C
The maximum stress to which a material can be
subjected without a trace of any permanent set
remaining upon a complete withdrawal of the stress.
A. ultimate limit
B. proportional limit
C. endurance limit
D. elastic limit
D
A total resistance that a material offers to an applied load.
A. flexure
B. stress
C. elasticity
D. rigidity
B
A property of materjal which relates the lateral strains to the longitudinal strain.
A. Rigidity
B. Elasticity
C. Poisson’s ratio
D. Deflection
C
The ability of metal to withstand loads without breaking
down is
A. stress
B. strength
C. strain
D. elasticity
B
The maximum stress to which a material may be
subjected before failure occurs
A. Rupture Stress
B. Yield Stress
C. Ultimate stress
D. Allowable stress
C
The ability of material or metal to resist being crushed
is called_______ .
A. Compressive strength
B. Fatigue strength
C. Torsional strength
D. Bending strength
A
Which of the following is not a strength property of
metals?
A. tensile strength
B. rocking strength
C. fatigue strength
D. torsional strength
B
The ability of metal to withstand forces thus following
a number of twist.
A. shear strength
B, bearing strength
C. endurance limit
D. deformation
A
A total resistance that a material offers to an applied load.
A. friction force
B. stress
C. rigidity
D. compressive force
B
The ability of a moving body to perform Work.
A. internal energy
B. potential energy
C. kinetic energy
D. flow work
C
The deformation that results from a stress and is
expressed in terms of the amount of deformation per
inch.
A. elongation
B. strain
C. poisson’s ratio
D. elasticity
B
The ability of the material to return to its original shape
after being elongated or distorted when the forces are
released.
A. elasticity
B. brittleness
C. plasticity
D. creep
A
The last point at which a material may be stretched
and still return to its undeformed condition upon release of the stress.
A. rupture limit
B. elastic limit
C. proportional limit
D. ultimate limit
B
The ratio of stress to strain within the elastic limit.
A. creep
B. modulus of rigidity
C. modulus of elasticity
D. Poisson’s ratio
C
The ability of a metal to withstand forces that cause a
member to twist.
A. shear strength
B. tensile strength
C. bearing strength
D. torsional strength
D
The ability of metal to stretch, bend or twist without
breaking or cracking.
A elasticity
B. ductility
C. brittleness
D. plasticity
B
The property of a material which resist forces action to pull the material apart.
A. Shear strength
B. Tensile strength
C. Compressive strength
D. Bearing strength
B
What is the· range of the tensile strength of common
varieties of cast iron?
A. 40-60 Mpa
B. 150-180 Mpa
C. 140-500 Mpa
D. 1500-1650 Mpa
C
The compression members tend
to buckle in the direction of
A. axis of load
B. minimum cross-section
C. least radius of gyration
D. perpendicular to-the axis of load
C
In testing a material for endurance strength, it is
subjected to
A. completely reversed load
B. static load
C. impact load
D. dynamic load
A
Which of the following stresses that is independent of
loads?
A. shear stress
B. residual stress
C. design stress
D. yield stress
B
During tensile test, which of the following stress-strain curve(s) fits for a glass rod ?
A. a straight line
B. a parabola
C. an irregular curve
D. sudden break
D
The internal stresses that exist in any part of the
material that is subjected to temperature and not acted
upon by an external load.
A. residual stress
B. form stress
C. superposed stress
D. control stress
A
In case of a knuckle joint, the pin is most likely to fail in
A. shear
B. tension
c. Compression
D. Double shear
D
The maximum stress which is reached during a tension test.
A. stress
B. elasticity
C. strain
D: tensile strength
D
Strength of a material is that of a stress intensity determined by considering the maximum test load to act over the original area of the test specimens.
A. yield point
B. ultimate strength
C. breaking strength
D. elastic strength
B
A test for pipe -used for coiling in sizes 2 inches
A. flaring
B. crush
C. flange
D. bend
D
The ratio of stress to the corresponding strain below
the proportional limit
A . stress-strain diagram
B. gage method
C. modulus of elasticity
D. tensile strength
C
The total amount of permanent extension of the gage
length measured after the specimen has fractured and
is expressed as percentage increase of the original
gage length.
A. Elongation
B. strain
C. stress
D. elastic limit
A
A metal characteristic that withstands forces that
causes twisting.
A. torsional strength
B. modulus of elasticity
C. twisting moment
D. elasticity
A
The hardness of helical and herringbone gear teeth after heat treatment is 210 to 300 Brinell Hardness, for gear and pinion is at
A. 360 Brinell min
B. 400 Brinell max
C. 340-350 normal
D. all of these
C
What is the property of a material which resists forces
acting to pull the material apart?
A. shear strength
B. tensile strength
C. torsional strength
D. compressive strength
B
The center of gravity of a solid pyramid or cone with a
total height of H is
A. 1/4 H
B. 3/5 H
C. 1/3 H
D. 1/3 H
A
Finding the resultant of two or more forces is called
A. coplanar force
B. non-coplanar forces
C. couple
D. composition of forces
D
The phenomenon of continuous stretching under load
even if the stress is less than the yield point.
A. elasticity
B. ductility
C. plasticity
D. creep
D
Statement that a given body is in static equilibrium
means that the body cannot
A. have any type of motion
B. be acted upon by more than one force
C. undergo any displacement
D. have any acceleration
A
The three-moment equation may be used to analyze
A. tapered column
B. continuous beam
C. composite beam
D. axially end loaded beam
B
Poisson’s ratio is the ratio of
A. shear strain to compressive strain
B. elastic limit to compressive strain
C. lateral strain to longitudinal strain
D. elastic limit to proportional limit
C
The smallest area at the point of rupture of a tensile
specimen divided by the original area is called
A. percentage elongation
B. lzod test
C. charpy test
D. percentage reduction of the area
D
A system of forces in space is in equilibrium. If two
equal and opposite collinear forces are added, which of
the following (if any) is true ?
A. equilibrium is maintained
B. equilibrium is destroyed
C. an unbalance moment exists
D. none of these is true
A
Permanent deformation or strain may occur without
fracture.
A. malleability
B. elasticity
C. ductility
D. plasticity
D
The ability of a metal to be deformed considerably without rupture is called
A. malleability
B. elasticity
C. ductility
D. plasticity
D
Stresses that are independent loads.
A. working stress
B. operating stress
C. residual stress
D. shear stress
C
Continuous stretching under load even if the stress is
less than the yield point.
A. plasticity
B. elasticity
C. creep
D. ductility
C
Opposite direction parallel forces.
A. concurrent
B. coplanar
C. couple
D. non-coplanar
C
The ratio of the moment of inertia of the cross-section
of the beam to the section modulus.
A. equal to the radius of gyration
B. equal to the area of the cross-section
C. measure of a distance
D. dependent on the modulus of elasticity
C
Which of the following is the differential of the shear equation?
A. bending moment of the beam
B. tensile strength of the beam
C. slope of the elastic curve
D. load of the beam
D
It is arbitrarily defined as the push and pull.
A. force
B. work
C. inertia
D. power
A
The changes in shape or geometry of the body due to the action of a force on it is called deformation or __
A. shear stress
B. stresses
C. compressive stress
D. strains
D
Internal stress exerted by the fibers to resist the action of outside force is called ___
A. shearing stress
B. tensile stress
C. ultimate stress
D. compressive stress
A
It is the ability of the material to resist deformation under stress.
A. plasticity
B. stiffness
C. toughness
D. all of these
B
In general, the design stress and factor of safety are related as follows:
A. Design Stress = ultimate stress times factor of safety
B. Design Stress = ultimate stress divided by factor of safety
C. Factor of Safety = design stress divided by ultimate stress
D. Ultimate Stress = factor of safety divided by design stress
B
The single force which produces the same effect upon a body as two or more forces acting together.
A. resultant force
B. co-planar force
C. couple
D. non-coplanar force
A
Ratio of unit lateral deformation to the unit longitudinal deformation.
A. Poisson’s ratio
B. Strain
C. stress
D. modulus of rigidity
A
A property of matter which causes it to resist any change in its motion or state of rest
A. brake
B. friction
C. inertia
D. impulse
C
Separate forces which can be so combined are called ____
A. non-concurrent forces
B. couple
C. combined forces
D. concurrent forces
D
Endurance strength is nearly proportional to the ultimate strength but not with _____
A. Yield strength
B. design stress
C. shear stress
D. All of the above
A
Deals only with the motion of bodies without reference to forces that cause the them.
A. dynamics
B. kinetics
C. statistics
D. kinematics
D
The product of the resultant of all forces acting on a body and the time that the resultant acts.
A. angular impulse
B. angular momentum
C: linear impulse
D. linear momentum
C
When two elastic bodies collide, which of the following laws can be used to solve for the resulting velocity?
A. Dalton’s Law
B. Avogadro’s Law
C. Conservation of energy
D. Conservation of momentum and conservation of energy
D
If the velocity of a mass is the same all the time during which motion takes place is called
A. deceleration
B. uniform motion
C. acceleration
D. none of these
B
The motion of an object diminished/decreased speed.
A. deceleration
B. retarded motion
C. negative impulse
D. all of these
B
Product of mass and linear velocity is known as
A. Impulse
B. linear momentum
C. Angular momentum
D. Impact
B
Moment curve to a simple beam with a concentrated load at middle span take the shape of a _____
A. triangle
B. rectangular
C. trapezoid
D. semi-ellipses
A
Material may be stretched and still returns to its former
form/condition upon release of force is called _____
A. plasticity
B. modulus of elasticity
C. ductility
D. elastic limit
D
What equation to be used in computing the acceleration of the center of a rolling ball with a diameter of 8 inches?
A. 0
B. rω2
C. ω2/r
D. v2/r
B
It is a science of motion that can be solved in terms of scalar or vector algebra
A. Kinematics
B. curvilinear translation
C. projectiles
D. acceleration
A
It is the name applied to reciprocating circular motion as that a pendulum.
A. intermittent motion
B. reciprocating motion
C. oscillation
D. momentum
C
It indicates how many times a volume of material is heavier than an equal volume of water
A. specific gravity
B. specific volume
C. specific weight
D. specific density
A
Deflection of a beam is _
A. proportional to the modulus of elasticity and moment of inertia
B. proportional to the load imposed and inversely to the length squared
C. inversely proportional to the modulus of elasticity and moment of inertia
D. inversely proportional to the weight imposed times the length
C
The modulus of elasticity for metals in compression is usually taken as that in _
A. tension
B. bearing
C. yield
D. ultimate
A
Which of the following is the ratio of moment and stress?
A. strain
B. section modulus
C. contraction
D. passions ratio
B
What is the amount of energy required to fracture a given volume of material?
A. Impact strength
B. Endurance limit
C. Creep strength
D. Stress rupture strength
A
If two principal stresses is zero, the state of stress is __
A. Biaxial
B. Mono-axial
C. Uniaxial
D. Triaxial
C
What do you call the system that have finite values of principal stresses?
A. triaxial
B. uniaxial
C. monoaxial
D. biaxial
A
Which of the following indicates the degree of concentration ?
A. power factor
B. service factor
C. stress factor
D. stress concentration factor
D
What mechanical property of a material which is a time-dependent permanent strain under stress?
A. Elongation
B. Elasticity
C. Creep
D. Rupture
C
In tensile testing, the increase in the gage length measured after the specimen fractures within the gage length is called___
A. Percent elongation
B. Creep
C. Elasticity
D. Elongation
A
What is the resistance of a material to plastic deformation?
A. Hardness
B. Stiffness
C. Creepage
D. Rigidity
A
What is the maximum stress below which a material can theoretically endure an infinite number of stress cycles?
A. Endurance state
B. Endurance test
C. Endurance limit
D. Endurance strength
C
What is the flexural stress of a symmetrical cross-section beam when the vertical shear is maximum?
A. Infinity
B. zero
C. maximum
D. minimum
B
It is the study of the body’s motion independent of the forces on the body.
A. Kinetics
B. Dynamics
C. Kinematics
D. Mechanics
C
What is the reciprocal of the velocity ratio ?
A. train value
B. ratio factor
C. modular value
D. none of these
A
What is the type of failure due to unstability?
A. buckling
B. slenderness ratio
C. Stability
D. Euler’s failure
A
What type of formula that is best applied to a very slender column?
A. Column formula
B. Slenderness formulas
C. Moment formulas
D. Euler Formula
D
A kinematic chain needs a minimum of ____
A. 2 links and 2 turning pairs
B. 3 links and turning pairs
C. 4 links and 4 turning pairs
D. 3 links and 2 turning pairs
C
Which of the following pairs is formed if shaft is revolving in a bearing?
A. lower pair
B. turning pair
C. sliding pair
D. cylindrical pair
A
How many links are there in a pantograph?
A. 3
B. 4
C. 5
D. 6
B
A pantograph is a mechanism having __
A. lower pairs
B. rolling pairs
C. spherical pairs
D. higher pairs
A
How do you call a cam where in the follower reciprocates or oscillates in a plane parallel to its axis ?
A. circular cam
B. reciprocating cam
C. cylindrical cam
D. oscillating cam
C
Which of the following cams where the follower reciprocates or oscillates in a plane parallel to the axis of rotation?
A. cam curves
B. radial cam
C. cylindrical cam
D. tangential cam
C
Which of the following cams where the follower reciprocates or oscillates in a plane perpendicular its axis of rotation?
A. tangential cam
B. cam curves
C. radial cam
D. cylindrical cam
C
Through how many degrees must an involute cam turn in order to raise its follower 3 inches if the diameter of the base circle is 5 inches.
A. 58.7 degrees
B. 180 degrees
C. 64.4 degrees
D. 68.79 degrees
B
The frustums of two cones are used in a manner to permit a variation of velocity ratio between two parallel shafts.
A. evans friction cones
B. bevel cones
C. spherical cones
D. friction gearing
A
The follower reciprocates or oscillates in a plane perpendicular to the axis of rotation of the cam.
A. radial cam
B. cylindrical cam
C. cam curves
D. tangential cam
A
The cam in which the follower reciprocates or oscillates in a plane parallel to the axis of the rotation.
A. cam curves
B. cylindrical cam
C. tangential cam
D. radial cam
B
The first derivative of kinetic energy with respect to velocity is___
A. power
B. acceleration
C. momentum
D. none of these
C
