26/11/2024 10:59AM
Machine Design Elements I past board exam
Answers
Device used to measure accurately speed:
a. speedometer
b. dial indicator
c. tachometer
d. dial gauge - Answers✓✓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 - Answers✓✓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 - Answers✓✓D. Conservation of
momentum and Conservation of energy
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26/11/2024 10:59AM
The ability of a metal to be deformed considerably without rupture is called:
a. plasticity
b. all of these
c. ductility
d. malleability - Answers✓✓a. plasticity
Permanent deformation or strain may occur without fracture:
a. malleability
b. elasticity
c. ductility
d. plasticity - Answers✓✓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 - Answers✓✓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 - Answers✓✓b. equilibrium is maintaned
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26/11/2024 10:59AM
Metal that assists lubrication or lubricant in itself
a. zinc
b. antimony
c. babbitt
d. lead - Answers✓✓c. babbit
A mechanism which usually do the indexing in a machine tool
a. universal chuck
b. slotter
c. dividing head
d. indexing - Answers✓✓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 - Answers✓✓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 - Answers✓✓d. percentage reduction of area
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26/11/2024 10:59AM
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 - Answers✓✓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 - Answers✓✓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 - Answers✓✓c. lateral strain to longitudinal
strain
All are associated with the grade of steel except:
a. SAE 43XX
b. SAE 13XX
c. SAE 10XX