MACHINE DESIGN ELEMENTS TEST BANK PAST BOARD EXAM
SOLVED #14
Device used to measure accurately speed:
A. Speedometer
B. Dial indicator
C. Tachometer
D. Dial gauge - correct answer c. Tachometer
When the hole is smaller than the shaft, it will take pressure to put the parts together.
The allowance is said to be negative and is termed:
A. Negative tolerance
B. Negative allowance
C. Negative fits
D. Interference of metal - correct answer d. Interference of metal
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
C. Conservation of energy
D. Conservation of momentum and Conservation of energy - correct answer D.
Conservation of momentum and Conservation of energy
The ability of a metal to be deformed considerably without rupture is called:
A. Plasticity
B. All of these
C. Ductility
D. Malleability - correct answer a. Plasticity
Permanent deformation or strain may occur without fracture:
A. Malleability
B. Elasticity
C. Ductility
D. Plasticity - correct answer c. Ductility
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 - correct answer a. Kinematics
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 destroyed
B. Equilibrium is maintaned
,C. None of these is true
D. An unbalanced of moment exist - correct answer b. Equilibrium is maintaned
Metal that assists lubrication or lubricant in itself
A. Zinc
B. Antimony
C. Babbitt
D. Lead - correct answer c. Babbit
A mechanism which usually do the indexing in a machine tool
A. Universal chuck
B. Slotter
C. Dividing head
D. Indexing - correct answer c. Dividing head
It equalizes the energy exerted and the work done thus preventing excessive or sudden
changes of speed
A. Flywheel
B. Balance of wheel
C. All of these
D. Flywheel pulley - correct answer c. All of these
The smallest area at the point of rupture of a tensile specimen divided by the original
area is called
A. Percentage elongation
B. Izod test
C. Charpy test
D. Percentage reduction of area - correct answer d. Percentage reduction of area
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 - correct answer c. Linear impulse
Which of the following is not a structural class of steel?
A. Low carbon steel
B. Tool and die steel
C. High chrome alloy steel
D. High strength low alloy steel - correct answer b. Tool and die steel
Poison'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 - correct answer c. Lateral strain to longitudinal
Strain
All are associated with the grade of steel except:
A. SAE 43XX
B. SAE 13XX
C. SAE 10XX
D. SAE 74XX - correct answer d. SAE 74XX
A property of material which relates the lateral strain to the longitudinal strain:
A. Stress
B. Strain
C. Poison's ratio
D. Strength - correct answer c. Poison's ratio
The maximum stress to which a material may be subjected before failure occurs
A. Ultimate strength
B. Ultimate stress
C. Endurance limit
D. Tensile stress - correct answer b. Ultimate stress
Hypoid gear is a special type of gear like
A. Worm gear
B. Spur gear
C. Herringbone gear
D. Bevel gear - correct answer d. Bevel gear
Considered a maximum safe center distance of sprockets should be _______ pitches.
Very long center distance cause catenary tension in the chain.
A. 70
B. 80
C. 60
D. 50 - correct answer b. 80
Cold working of steel plates make the metal
A. Tougher
B. More ductile
C. Harder
D. More malleable - correct answer c. Harder
Recommended best cutting angle of drill for work on steel or cast iron is _____degrees.
A. 48
B. 63
C. 59
D. 50 - correct answer c. 59
, In shear pin or breaking pin design, we may use the data experienced by link belt from
1/8 inch to 1 inch pins and the breaking stress is _____ksi.
A. 40
B.55
C. 60
D. 48 - correct answer c. 50
Deals only with the motion of bodies without reference to the forces that cause them
A. Dynamics
B. Kinetics
C. Static
D. Kinematics - correct answer d. Kinematics
The property that characterizes a material ability to be drawn into a wire
A. Ductility
B. Thermal conductivity
C. Tensile strength
D. Endurance limit - correct answer a. Ductility
One of the causes of spur gear tooth breakage is the unbalanced load on one end of
the tooth that results in higher stresses than when the load is evenly distributed. To
minimize this problem, the face width "b" should not be greater than the thickness or
pitch of the tooth. In the absence of test values, the follwing can be a guide
A. 2.5Pc < b < 4Pc
B. 2.0 < b < 4 Pd
C. 2.5 < b < 4 Pd
D. 2.0 < b < 4 Pc - correct answer a. 2.5Pc < b < 4Pc
The three moment of equation may be used to analyze:
A. Tapered column
B. Continuous beam
C. Composite beam
D. Axially end loaded beam - correct answer b. Continuous beam
What is the common shop practice to prevent sokdee from running away from surface
to be joined.
A. All of these
B. Surround the work with clay
C. Introduce around the work roled
Wet cloth
D. Put asbestos sheeting around
The work - correct answer a. All of these
SOLVED #14
Device used to measure accurately speed:
A. Speedometer
B. Dial indicator
C. Tachometer
D. Dial gauge - correct answer c. Tachometer
When the hole is smaller than the shaft, it will take pressure to put the parts together.
The allowance is said to be negative and is termed:
A. Negative tolerance
B. Negative allowance
C. Negative fits
D. Interference of metal - correct answer d. Interference of metal
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
C. Conservation of energy
D. Conservation of momentum and Conservation of energy - correct answer D.
Conservation of momentum and Conservation of energy
The ability of a metal to be deformed considerably without rupture is called:
A. Plasticity
B. All of these
C. Ductility
D. Malleability - correct answer a. Plasticity
Permanent deformation or strain may occur without fracture:
A. Malleability
B. Elasticity
C. Ductility
D. Plasticity - correct answer c. Ductility
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 - correct answer a. Kinematics
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 destroyed
B. Equilibrium is maintaned
,C. None of these is true
D. An unbalanced of moment exist - correct answer b. Equilibrium is maintaned
Metal that assists lubrication or lubricant in itself
A. Zinc
B. Antimony
C. Babbitt
D. Lead - correct answer c. Babbit
A mechanism which usually do the indexing in a machine tool
A. Universal chuck
B. Slotter
C. Dividing head
D. Indexing - correct answer c. Dividing head
It equalizes the energy exerted and the work done thus preventing excessive or sudden
changes of speed
A. Flywheel
B. Balance of wheel
C. All of these
D. Flywheel pulley - correct answer c. All of these
The smallest area at the point of rupture of a tensile specimen divided by the original
area is called
A. Percentage elongation
B. Izod test
C. Charpy test
D. Percentage reduction of area - correct answer d. Percentage reduction of area
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 - correct answer c. Linear impulse
Which of the following is not a structural class of steel?
A. Low carbon steel
B. Tool and die steel
C. High chrome alloy steel
D. High strength low alloy steel - correct answer b. Tool and die steel
Poison'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 - correct answer c. Lateral strain to longitudinal
Strain
All are associated with the grade of steel except:
A. SAE 43XX
B. SAE 13XX
C. SAE 10XX
D. SAE 74XX - correct answer d. SAE 74XX
A property of material which relates the lateral strain to the longitudinal strain:
A. Stress
B. Strain
C. Poison's ratio
D. Strength - correct answer c. Poison's ratio
The maximum stress to which a material may be subjected before failure occurs
A. Ultimate strength
B. Ultimate stress
C. Endurance limit
D. Tensile stress - correct answer b. Ultimate stress
Hypoid gear is a special type of gear like
A. Worm gear
B. Spur gear
C. Herringbone gear
D. Bevel gear - correct answer d. Bevel gear
Considered a maximum safe center distance of sprockets should be _______ pitches.
Very long center distance cause catenary tension in the chain.
A. 70
B. 80
C. 60
D. 50 - correct answer b. 80
Cold working of steel plates make the metal
A. Tougher
B. More ductile
C. Harder
D. More malleable - correct answer c. Harder
Recommended best cutting angle of drill for work on steel or cast iron is _____degrees.
A. 48
B. 63
C. 59
D. 50 - correct answer c. 59
, In shear pin or breaking pin design, we may use the data experienced by link belt from
1/8 inch to 1 inch pins and the breaking stress is _____ksi.
A. 40
B.55
C. 60
D. 48 - correct answer c. 50
Deals only with the motion of bodies without reference to the forces that cause them
A. Dynamics
B. Kinetics
C. Static
D. Kinematics - correct answer d. Kinematics
The property that characterizes a material ability to be drawn into a wire
A. Ductility
B. Thermal conductivity
C. Tensile strength
D. Endurance limit - correct answer a. Ductility
One of the causes of spur gear tooth breakage is the unbalanced load on one end of
the tooth that results in higher stresses than when the load is evenly distributed. To
minimize this problem, the face width "b" should not be greater than the thickness or
pitch of the tooth. In the absence of test values, the follwing can be a guide
A. 2.5Pc < b < 4Pc
B. 2.0 < b < 4 Pd
C. 2.5 < b < 4 Pd
D. 2.0 < b < 4 Pc - correct answer a. 2.5Pc < b < 4Pc
The three moment of equation may be used to analyze:
A. Tapered column
B. Continuous beam
C. Composite beam
D. Axially end loaded beam - correct answer b. Continuous beam
What is the common shop practice to prevent sokdee from running away from surface
to be joined.
A. All of these
B. Surround the work with clay
C. Introduce around the work roled
Wet cloth
D. Put asbestos sheeting around
The work - correct answer a. All of these
