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MD Elements 10

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Type of bolt commonly used in the

construction that is threaded in both ends

a. Acme thread bolts


b. Hex bolt
c. Square bolt
d. Stud bolt
The resultant of a pair of equal forces but
opposite in direction called _____

a. Concurrent
b. Couple
c. Non-concurrent
d. Resultant
What is the recommended coefficient of
fluctuation of flywheels for punching,
shearing, pressing machine is:

a. 0.005 – 0.1
b. 0.002 – 0.07
c. 0.03 – 0.05
d. 0.01 – 0.03
A bolt for general application that posses a
stronger thread is a type of _____ screw

a. BUN
b. UNC
c. UNEF
d. WOOD
The stress that causes the material to shorten

a. Bearing
b. Compressive
c. Shear
d. Tensile
The reciprocal of a diametral pitch or the ratio
of the pitch diameter to the number of teeth

a. clearance
b. involute
c. lead
d. module
All stainless steel type is SAE designation
except:

a. 92XX
b. 300XX
c. 304XX
d. 515XX
What do impact test determine?

a. Creep strength
b. Hardness
c. Toughness
d. Yield strength
Cutting lubricants used in drilling, reaming
and tapping for hard sports in cast iron

a. Dry
b. Kerosene
c. Soda water
d. Turpentine
Which of the following welds have been
considered as resistance weld which is usually
round in the same dorm as the electrodes
that press the sheets together
a. Edge joints
b. Spot welds
c. CIG welds
d. TIG welds
SAE 51XXX belongs to the _____ steel family

a. Carbon
b. Chromium
c. Manganese
d. Nickel
It is a steel with SAE specification 13XX

a. Chromium
b. Manganese
c. Molybdenum
d. Nickel
Which of the following is nit recommended
for use in a driving speed exceeding 2000
ft/min

a. Flat leather belt


b. Herrinbone gear
c. Silent sprocket
d. V-belt
Property, which enables a material to be
drawn into a wire

a. Ductility
b. Elasticity
c. Plasticity
d. Utility
It is friction of wheel inclination from the
vertical position

a. Camber
b. Toe-in
c. Caster
d. King pin inclination
A kind of braking system such that if the band
wraps partly around the brake drum, and the
braking action is obtained by pulling the band
tight into the wheel
a. Block brake
b. Clutch
c. Band brake
d. Centrifugal brake
The general accepted limit of diamond wheel
speed should be in the range of _____ fpm

a. 1000/2000
b. 2500/3500
c. 3000/4000
d. 5000/6000
It is a chromium steel tape in AISI-SAE
designation

a. 10XX
b. 25XX
c. 50XX
d. 40XX
The lateral strain in axial tension members
can be calculated by:

a. Deformation
b. Hooke’s law
c. Poission’s ratio
d. Willan’s line
Too much _____ in a flat belt operation tend
to cause excessive wear slippage and may
burn the belt

a. Play
b. Slack
c. stiffness
d. Tightness
What device on a lathe machine used for
carrying the revolving spindle?

a. Head stock
b. Header
c. Head suction
d. None of these
The force that can be combined or called
_____ component forces

a. Different
b. Helical
c. Opposite
d. Parallel
Gears are manufactured usually in the
following processes: milling, generating,
shaving, grinding and:

a. Blanking
b. Drinking
c. Heat treatment
d. Molding
Which of the following bolts provided with a
hole at one end instead of usual head

a. Stud bolt
b. Eye bolt
c. Machine bolt
d. Stove bolt
It is while metal with good oxidation and
corrosion resistance. This has also good
electrical magnetic properties

a. Aluminum
b. Copper
c. Nickel
d. Titanium
A type of chisel used in cutting of keyways,
square corners or slots

a. Cape
b. Diamond head
c. Flat
d. Round
Which of the following is a machine which
takes large quantities of raw or finished
materials and binds them with a rope or
metal straps or wires into a large package
a. Bacher
b. Bending machine
c. Baler
d. Automatic screw machine
Which of the following ropes is galvanized
and consists of 6 strands, 7 wires each, and a
hemp core?

a. Reverse lay rope


b. Guy rope
c. Lang lay rope
d. Regular rope
How do you call the forces not lie on the
same plane?

a. Component
b. Composition of forces
c. Non-coplanar
d. Resolution
It is a molybdenum steel-type in AISI-SAE
designation

a. 44 XX
b. 45 XX
c. 50 XX
d. 51 XX
The ratio of lateral strain to longitudinal strain

a. Deformation
b. Modulus of elasticity
c. Poission’s ratio
d. Willan’s line
Which of the following gasket material which
should avoid hot liquid/steam applications?

a. Asbestos fiber
b. Nylon fiber
c. Rubberized
d. Wool
The kinetics chain in which one link is
considered fixed for purpose of analysis but
motion is possible on other links

a. Belting
b. Frame
c. Mechanism
d. Sprocket chain
It is the grasping of an outside workpiece in a
chunk or a jawed device in a lathe

a. clucking
b. clamping
c. chucking
d. clamshelling
The most known lubricants being utilized in
whatever category of load and speed are oil,
air, grease and dry lubricants like:

a. Bronze
b. Graphite
c. Lead
d. Silicon
It imparts the ductility, toughness, and
plasticity of steel

a. Annealing
b. Materializing
c. Quenching
d. Tempering
Which of the following types of wood is
usually used in making wood pattern in the
foundry?

a. Dried sap wood


b. Hard wood
c. Kiln dried wood
d. Scrap wood
It is the process used to form shallow, round,
raised recessed troughs of uniform width in a
straight curved or circular form

a. Hemming
b. Beading
c. Embossing
d. Buldging
In a _____ design, the lead of a single thread
is equal to the pitch

a. Bevel gear
b. Bolt
c. Helical gear
d. Hypoid gear
Which of the following is a mechanical linkage
or mechanism that can turn about a center or
rotation

a. Oscillation
b. Crank
c. Coupler
d. Drag link
The arc is covered with a welding
composition, and bare electrode wire is fed
automatically

a. Resistance welding
b. Induction welding
c. Submerged welding
d. Spot welding
Which of the following clutches that has a
disadvantage of heavier rotating masses

a. Multiple disc clutch


b. Cone clutch
c. Disc clutch
d. Twin clutching
Find the polar section modulus of a steel
shafting with “D” as the diameter

a. ∏D3/16
b. ∏D3/32
c. ∏D3/32
d. ∏D3/16
What is the carbon content range of SAE 4140
chrome-moly steel after heat treatment?

a. 0.30/0.45
b. 0.38/0.43
c. 0.38/0.45
d. 0.30/0.50
Cutting lubricant used in drilling reaming, and
tapping for brass and bronze

a. Dry
b. Soda water
c. Soluble oil
d. Turpentine
The maximum recommended ideal number of
teeth to use for bigger sprocket is:

a. 120
b. 127
c. 132
d. 143
The _____ is one of the rigid members /
bodies joined together to form a kinetic chain

a. coplanar
b. frame
c. link
d. machine
What is the special bearing used with high
deflection?

a. Babbit
b. Ball
c. Roller
d. Self aligning
For mass production of casting it is generally
cheaper to use _____ pattern for longer life

a. Aluminum
b. Brass
c. Metal
d. Wooden
It is abundantly used worldwide as coating on
top of the plate of automobiles

a. Babbit
b. Lead
c. Manganese
d. Tin
The brake capacity to absorb energy is known
as:

a. Energy
b. Power
c. Resistance brake
d. Braking torque
What type of compound screw which
produces a motion equal to the difference in
motion between the two component screws

a. Machine screw
b. Tandem screw
c. Differential screw
d. Variable screw
It is a low cost bearing used world wide for
automobile or low horsepower motor
application. It is made of thin coating of over
flat metal strip
a. Babbitt
b. Cadmium brass
c. Lead
d. Thin
All forces in the same plane are called

a. coplanar
b. couple
c. parallel
d. resultant
A welding which consists of short lengths (2 –
3 in. long) of welds with space between as 6
inches on centers

a. Intermittent weld
b. Spot weld
c. MIG weld
d. TIG weld
Sound travels fastest in:

a. Air at 0oF and 1 atmosphere


b. Air at 70oF and 1 atmosphere
c. Air at 78oF and 0 lbf / in2
d. Steel at 70oF
This is an alloy in bronze casting that assists
lubrication and in itself a lubricant

a. Lead
b. Manganese
c. Phosphorus
d. Tin
A pair of equal and opposite ( not collinear)
forces that tend to cause a rotation of a body

a. centroids
b. couple
c. equilibrium
d. vector
Stress that resist being pulled apart

a. Compressive
b. Shear
c. Tensile
d. Torsional
Prepared tool bit will now consists of face,
nose and:

a. Cutting tool
b. Shank
c. Sharp tool
d. Tool edge
The yield strength of common yellow brass
( 70% Cu, 30% Zn) can be increased by:

a. Annealing
b. Chill casting
c. Cold working
d. Heat treatment
Plane of rotation is defined as plane
perpendicular to a

a. Gear axis
b. Gear ratio
c. Normal plane
d. Pitch diameter
Which of the following can be a concurrent?

a. Collinear
b. Couple
c. Parallel
d. All of these
The most common useful tools to measure
diameter in machine shop operation but
normally and always used with steel scale for
measurement
a. Caliper
b. Micrometer
c. Protractor
d. Vernier
It is gear commonly used in parallel shaft
transmission especially when a smooth
continuous action is essential as in high speed
drives up to 12,000 fpm
a. Bevel gear
b. Helical gear
c. Herringbone ear
d. Spur gear
The distance between the center of
oscillation and the point of suspension is
called:

a. Fix axis
b. Center of gravity
c. Center of percussion
d. Radius of oscillation
The effective face width of a helical gear
divided by the axial pitch. This is sometimes
called face overlap

a. Angle overlap
b. Axial overlap
c. Contact overlap
d. Helical overlap
The process of removing excess metal from
the edge of a strip to make it suitable for
drawing without wrinkling or to obtain final
complicated shape which was not directly
possible by blanking
a. Lancing
b. Slugging
c. Notching
d. Trimming
It is a plane between mating teeth of the
amount of which a tooth space exceed the
thickness of an engaging tooth is called:

a. backlash
b. clearance
c. pitting
d. space
For longer sprocket chain life the speed range
of _____ fpm is recommended

a. 1200-1400
b. 1500-1600
c. 1800-2000
d. 2000-2100
As a rule the center to center distance
between sprocket should not be less than
____ times the diameter of the bigger
sprocket and not less than 30 times the pitch
nor more than about 50 times to pitch

a. 1.5
b. 2
c. 2.5
d. 3
The part of machine that absorbs the energy
delivered by a sharp force a blow

a. Spring
b. Anvil
c. Brakes
d. Flywheel
The progressive change in position of _____ is
called motion

a. Component
b. Couple
c. Link
d. Mass
The total frictional energy that is stored in the
brake parts principally in the drum or disk is
approximately:

a. 56% up
b. 90% up
c. 86% up
d. 75% up
It is a large lathe used for turning and boring
cannons

a. Gun lathe
b. Engine lathe
c. Cannon lathe
d. Turret lathe
Maximum moment formula for beam simply
supported at both ends and subject to a load
uniformly distributed over is length

a. wL/2
b. wL2/8
c. wL2/16
d. wL/12
Forces that meet at a common point are
called

a. Co-linear
b. Concurrent
c. Coplanar
d. Couple
Composition of forces is at the _____ of two
or more forces

a. combination
b. opposition
c. resultant
d. summary
What tool(s) will be used in making wood
pattern in the foundry shop?

a. Band saw
b. Drill machine
c. Hammer
d. Saw and chisel
Stiffness is the material’s ability to _____
deformation under stress

a. Non-planar
b. Planar
c. Resist
d. Stafer
Strain or _____ is a change in geometry /
shape of the body due to action of a force on
it

a. Bending stress
b. Deformation
c. Shear stress
d. Stress
What operation generally carried out to
divide the parent coiled sheet into narrower
coils?

a. Slotting
b. Squeezing
c. Squaring
d. Slitting
Which of the following bearing is used for low
load and less expensive production

a. Babbit
b. Ball bearing
c. Roller bearing
d. Self aligning
Which of the following is the process of
removing coarse scratches or tool marks?

a. Polishing
b. Buffing
c. Honing
d. Lapping
Ability of a material to absorb strain energy
and will return to its original state

a. Creep
b. Fatigue strength
c. Hardness
d. Resilience
What is other term applied to dynamic seals?

a. Gasket
b. Packing
c. Seal
d. Shield
Arc produced by two tungsten electrodes into
which a jet of hydrogen is directed.

a. Atomic hydrogen welding


b. Electro-beam welding
c. Hydrogen bomb
d. Hydrogen lancing
The resultant cross-sectional area of the
tensile test specimen divided by the
specimen original area is called:

a. Charpy test
b. % elongation
c. Impact test
d. Izod test
Which of the following that describes the
same material properties all over / direction
and at any particular point is a structural
member?
a. Heterogenous
b. Homogenous
c. Isentropic
d. Isotropic
Flat belt that is too tight will induce strain on
the bearing and belt _____

a. Life will be shortened


b. Result to uneconomical operation
c. Suffer/shatter
d. Will be sheared/cut
Circular pitch is measured along the ______
in the circular gear

a. Circle
b. Line of action
c. Pitch center
d. Pitch diameter
The recommend means of supporting the
chunk during the mounting procedure to the
lathe spindle is to use:

a. Crane
b. Jack
c. Overhead
d. Ratchet
The helical and herringbone gear teeth cut
after heat treatment should have a hardness
in the range of 210/300BHN. The pinion gear
teeth hardness on the other hand,
ideally/normally should be at _____ BHN

a. 250/320
b. 350/380
c. 400/345
d. 340/350
A welding operation that use hot flame and
metal rod

a. Gas welding
b. Arc welding
c. Resistance welding
d. Automatic welding
In impact force introduced to cause the metal
to flow in a shaped mold according to the
shape to dies made

a. Hardness
b. Spinning
c. Swaging
d. Toughness
Basic size is the same as design size if there is
no:

a. allowance
b. clearance
c. limits
d. tolerance
Forces of equal in magnitude but opposite in
direction are parallel called:

a. Acceleration
b. Coplanar
c. Couple
d. Non-coplanar
Which type of hardening will work to some
extent in all metals?

a. Annealing
b. Austenitizing
c. Martempering
d. Work hardening
If the velocity is variable and
regularly/constantly increasing the rate of
change is called:

a. Acceleration
b. Constant work
c. Moment
d. Motion
A liquid metal at room temperature

a. Aluminum
b. Mercury
c. Zinc
d. Zirconium

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