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Test Review > Instalation, Leveling and Alignment > Flashcards

Instalation, Leveling and Alignment Flashcards

1
Q

Machine units that do not share a common baseplate and require alignment to
other units should not be mounted directly onto a foundation. They are set and
fastened to.
A) Bedplates C) Foundation plates
B) Soleplates D) Grout

A

B: Soleplates

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2
Q

Machine units must be installed in a particular order to ensure satisfactory
operation of the equipment. Select the proper order below.
A) Primary equipment, prime mover, transmission unit.
B) Prime mover, primary equipment, transmission unit.
C) Primary equipment, transmission unit, prime mover.
D) Prime mover, transmission unit, primary equipment.

A

C Primary equipment, Transmission unit, Prime mover

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3
Q

Which one of the following steps is not important when installing machines?
A) Leveling C) Alignment
B) Torquing D) Testing

A

B Torquing

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4
Q

If attachments to machine units (piping, ducts, etc.) cause misalignment from
the specified tolerances, the attachments should be.
A) Connected with flexible hose C) Installed with baffles
B) Adjusted to eliminate forces D) Isolated from vibration

A

B; adjusted to eliminate forces

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5
Q

Various methods are employed to mount and secure machines in place. The
method used must support the machine without distorting it as well as…
A) Eliminate soft foot C) Avoid grout pockets
B) Absorb eddy currents D) Absorb vibration

A

D: Absorb Vibrations

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6
Q

In modern manufacturing facilities, mobility of equipment is very important.
How is this accomplished when installing machines?
A) Self-leveling mounts C) Vibration isolators
B) Adjustable foundations D) Adjustable mounts

A

D: Adjustable mounts

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7
Q

To prevent the amplification of internal stresses which cause misalignment and
wear of machine elements as well as absorbing vibration these devices are
installed.
A) Self-leveling mounts C) Vibration isolators
B) Adjustable foundations D) Adjustable mounts

A

C: Vibration Isolators

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8
Q

This procedure in foundation work eliminates concern about foundation
shrinkage as well as providing space for shimming to elevation.
A) Pouring to minus elevation C) Pouring with additives
B) Pouring grout with concrete D) Pre-installing anchor bolts

A

A: Pouring to a minus elevation

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9
Q

The primary purpose of this component is to secure machine units to the
baseplate, soleplates, or structural steel foundation.
A) Anchor bolt C) Hold-down bolt
B) Hold-down screw D) All of the above

A

C: Hold down bolt

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10
Q

Straight anchor bolts without deformed ends should be set into the foundation
concrete to a depth of.
A) 4 times their diameter C) 10 times their diameter
B) 8 times their diameter D) 25 times their diameter

A

D: 25 times the Diameter

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11
Q

When anchor bolts have deformed ends, the length of the bent leg should be?
A) 4 times their diameter C) 10 times their diameter
B) 8 times their diameter D) 25 times their diameter

A

A: 4 times the diameter

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12
Q

This type of anchor bolt is preferred to fixed anchor bolts as they allow the bolt
to be moved slightly in case of an error in hole layout.
A) Tube anchor bolt C) Grout anchor bolt
B) Flexible anchor bolt D) Canned anchor bolt

A

A: Tube anchor bolt

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13
Q

Some hold-down bolts are subject to severe vibration and are liable to break at
the thread section. What type of anchor bolt is used in these cases?
A) Extra thick anchor bolts C) Pipe anchor bolts
B) Tube anchor bolts D) Boxed anchor bolts

A

D: Boxed anchor bolt

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14
Q

Where anchor bolts need to be installed in existing concrete this style of anchor
bolt is most often used.
A) Resin anchor bolt C) Mechanical expansion anchor
B) Hydraulic expansion anchor D) Cementitious anchor

A

C: Mechanical expansion anchor

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15
Q

This component assists in locating, setting and holding anchor bolts in place
while the cement cures.
A) Baseplate C) Soleplate
B) Bedplate D) Template

A

D: Template

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16
Q

These lines are established on the machine base or baseplate for both the length
and the width of the machine base and are used to establish the exact position of
the machine.
A) Bench lines C) Permanent lines
B) Center lines D) Foundation lines

A

B: Center Lines

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17
Q

These lines are used to establish a machine’s elevation and horizontal position.
A) Benchmarks C) Center lines
B) Foundation lines D) Piano lines

A

A: Benchmarks

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18
Q

This component placed under each leveling screw or bolt prevents the end from
digging into the foundation and stops the machine from moving out of position
(walking) when it is tightened down?
A) Leveling washers C) Leveling isolators
B) Leveling wedges D) Leveling shims

A

A: Leveling washers

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19
Q

This component supports the weight of the machine that is set directly to the
floor and not grouted in place. It screws into threaded holes provided in the
machine base.
A) Anchor bolt C) Leveling bolt
B) Hold-down bolt D) Leveling screw

A

D: Leveling screw

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20
Q

This component is often used to raise machine units so that shims may be
inserted or removed when aligning and leveling units vertically.
A) Jacking screws C) Leveling screws
B) Leveling bolts D) Elevator bolts

A

A: Jacking screws

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21
Q

Flat metal plates that provide a permanent firm adjustable support at points
where weight will be concentrated (anchor bolt locations) are known as !!!
A) Wedges C) Leveling washers
B) Shims D) Bench plates

A

B: Shims

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22
Q

A structural filler that is the critical connection that links the bed or soleplate to
the concrete foundation is known as !!!!
A) Resin C) Grout
B) Epoxy D) Concrete

A

C: Grout

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23
Q

The major advantage that polymeric structural filler has over other types is.
A) Moisture resistant C) Corrosion resistant
B) Vibration resistant D) All of the above

A

D: All of the above

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24
Q

During the installation of transmission, primary and prime mover units it is
sometimes necessary to ensure permanent alignment. This is accomplished by
using???
A) Epoxy resins C) Rigid couplings
B) Grout D) Taper dowel pins

A

D: Taper doewl Pins

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25
Q

Why is concrete mix not used to grout anchor bolts in machine foundations?
A) It is too rough when cured C) It cures too slowly
B) It can’t withstand compression D) It shrinks when cured

A

D: It shrinks when it cures

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26
Q

Normal cement concrete reaches 100% of its compressive strength within how
many days?
A) 28 days C) 10 days
B) 17 days D) 3 days

A

A: 28 Days

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27
Q

Normal cement concrete reaches its desired working strength in how many
days?
A) 28 days C) 7 days
B) 18 days D) 3 days

A

C: 7 Days

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28
Q

Air-entrained concrete should be used where the hardened concrete will be
subjected to….
A) Vibration C) Excessive moisture
B) Freezing & thawing D) Shock loading

A

B: Freezing and thawing

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29
Q

What type of concrete is easier to pour and place and requires less working to
assume the shape of the form?
A) Wet consistency C) Stiff consistency
B) Dry consistency D) Medium consistency

A

A: Wet consistency

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30
Q

The foundation of a machine which is subjected to critical alignment is poured
with the concrete level at a minus elevation. What is that minus elevation?
A) ½” to ¾” C) 7/8” to 1 9/16”
B) ¾” to 1 ½” D) 1” to 1 5/8”

A

B: 3/4” to 1 1/2” 19mm - 38mm

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31
Q

What type of misalignment is always corrected first?
A) Horizontal parallel (offset) misalignment
B) Horizontal angular misalignment
C) Vertical parallel (offset) misalignment
D) Vertical angular misalignment

A

D: Vertical angular misalignment

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32
Q

If during normal operation the driven machine expands due to thermal
conductivity, the drive unit must first be aligned in what manner?
A) Within normal limits C) Higher than the driven unit
B) Lower than the driven unit D) In the horizontal plane

A

C: Higher than the driven unit

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33
Q

The condition within machinery that causes reduced bearing life, coupling
damage, high vibration levels and reduced seal life is referred to as?
A) Resonance C) Critical speed
B) Soft foot D) Misalignment

A

D: Misalignment

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34
Q

These items (usually placed in packs) are placed under the mounting feet of the
drive unit to align it in the vertical plane?
A) Wedges C) Feeler gages
B) Shims D) Pack gages

A

B: Shims

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35
Q

The devices used to push the equipment from side to side on the horizontal plane
to correct alignment are called?
A) Jacking bolts C) Leveling screws
B) Alignment screws D) Elevator bolts

A

B: Alignment screws

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36
Q

Sometimes machining errors cause coupling runout. When the coupling bore is
machined at an angle to its axis it is called?
A) Angular runout C) Eccentric runout
B) Wobble D) Total runout

A

A: Angular runout

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37
Q

The misalignment condition that occurs in the vertical plane can be identified by
measuring the gap between the coupling faces, and is identified as.
A) Offset misalignment C) Parallel misalignment
B) Angular misalignment D) Face misalignment

A

B: Angular misalignment

38
Q

The misalignment condition that occurs in the vertical plane can be identified by
measuring the gap at the top of the coupling with a straight edge and feeler
gage.
A) Rim misalignment C) Parallel misalignment
B) Angular misalignment D) Face misalignment

A

C: Parallel misalignment

39
Q

To successfully align the shafts in a misalignment condition it must be corrected
in two planes, what are they?
A) Angular & offset C) Parallel & offset
B) Horizontal & vertical D) Vertical & Parallel

A

B: Horizontal & Vertical

40
Q

This misalignment condition occurs when the centerlines of the two shafts are
not parallel.
A) Parallel misalignment C) Offset misalignment
B) Angular misalignment D) Vertical misalignment

A

B: Angular Misalignment

41
Q

This misalignment condition occurs when the centerlines of the two shafts are
parallel but not in line.
A) Horizontal misalignment C) Offset misalignment
B) Angular misalignment D) Vertical misalignment

A

C: offset misalignment

42
Q

Vertical offset misalignment is corrected with equal amounts of shims under
what locations of the drive unit?
A) All four feet C) Left side only
B) Front feet only D) Back feet only

A

A: All four feet

43
Q

Vertical angular misalignment is corrected with equal amounts of shims under
what locations of the drive unit?
A) All four feet C) Left side only
B) Back or front D) Right side only

A

B: Back or front

44
Q

In most situations when you approach a machine, weather it is the alignment of
the primary unit, transmission unit, or the drive unit the type of misalignment
condition you will encounter is.
A) Parallel misalignment C) Offset misalignment
B) Angular misalignment D) Combination misalignment

A

D: Combination misalignment

45
Q

When all the supporting feet of a machine do not equally support the weight of
the machine, the condition is called?
A) Parallel misalignment C) Softfoot
B) Angular misalignment D) Combination misalignment

A

C: Soft foot

46
Q

When using a steam turbine as a prime mover, and considering the fact that it
encounters considerable thermal growth during operation, where would you set
the shaft in relation to the primary unit?
A) Lower C) Higher
B) Parallel D) Dynamically parallel

A

A: Lower

47
Q

It is generally accepted that this type of machinery alignment check produces
unreliable results and therefore is not used very often.
A) Hot check C) Ambient check
B) Cold check D) NSF check

A

A: Hotcheck

48
Q

Choosing the coupling alignment procedure for a particular situation depends
on a number of factors. Which one of the following is NOT a consideration?
A) Speed of the equipment C) Available tools
B) Ambient temperature D) Alignment specifications

A

B: Ambient temperatures

49
Q

To lessen the springing effect caused by shims being stacked, always use the
least number of shims to give the correct stack thickness. What is the maximum
number to be used.
A) Three C) Five
B) Four D) Six

A

B: Four but least amount as possible

50
Q

When reading a dial indicator the difference in reading from top to bottom is
known as.
A) Face reading C) Total indicator reading
B) Total rim reading D) Rim reading

A

C: total indicator reading

51
Q

Dial indicator readings taken on the face of the coupling by rotating through
180 deg. indicate what type of misalignment?
A) Angular C) Parallel
B) Combination D) Offset

A

A: Angular

52
Q

Dial indicator readings taken on the rim of the coupling by rotating through
180 deg. indicate what type of misalignment?
A) Angular C) Parallel
B) Combination D) Axial

A

C; parallel

53
Q

The component on the dial indicator that must be zeroed out before any
readings can be taken is called.
A) Face C) Plunger
B) Bezel D) Indicator

A

B: Bezel

54
Q

While taking dial indicator readings to determine the amount of misalignment,
it is critical that the coupling halves be rotated in what manner?
A) Clockwise C) Independently
B) Counter-clockwise D) Together

A

D: Together

55
Q

What misalignment condition should be corrected first.
A) Angular misalignment C) Parallel misalignment
B) Offset misalignment D) Softfoot

A

A: Angular

56
Q

Most prime movers run at relatively low rim speeds. Couplings must be aligned
very carefully if they are running at or above ________ SFM.
A) 1,000 C) 3,600
B) 1,600 D) 5,000

A

C: 3,600

57
Q

While taking readings with a dial indicator or feeler gages to determine if there
is any misalignment present, the prime mover hold down bolts must be.
A) Tight C) Doesn’t matter
B) Loose D) Removed

A

A: Tight

58
Q

What type of shim is NOT recommended for making minor adjustments to
correct misalignment conditions?
A) Solid shims C) Strip shims
B) Slotted shims D) Brass shims

A

C: Strip shims

59
Q

When reading a dial indicator for shaft misalignment, the dial reading is
+ .014”. The actual total (rim) misalignment present is?
A) + .007” C) + .028”
B) + .014” D) - .007”

A

A: +.007”

60
Q

When angular softfoot is present in machinery it is usually corrected by using
what type of shim?
A) Brass shim C) Stainless steel shim
B) Laminated shim D) Cedar shim

A

B: Laminated Shim

61
Q

The weight of dials, clamps, brackets and other accessories may cause bending
of supporting attachments while taking readings with the indicators. This is
called.
A) Indicator sag C) Bracket bend
B) Indicator error D) Attachment sag

A

A: Indicator sag

62
Q

The corrections in dial settings for the problem mentioned in the question above
only apply when you are taking what type of readings.
A) Rim readings C) Combination readings
B) Face readings D) Palm readings

A

A: rim readings

63
Q

To correct for the amount of deflection in the dial indicator setup when the
weight of the dial and attachments creates bending in the brackets which affects
the readings, how is the dial indicator set to compensate for this?
A) Position @ 12 o’clock C) Position @ 6 o’clock
bezel to + equal to sag bezel to + equal to sag
B) Position @ 12 o’clock D) Position @ 9 o’clock
bezel to - equal to sag bezel to + equal to sag

A

A: Position @ 12 oclock Bezal + bar sag

64
Q

Setting a dial indicator to a fixed base and the plunger on the coupling half then
rotating the coupling through a full 360 deg. sweep will help determine.
A) Angular misalignment C) Offset misalignment
B) Runout D) Softfoot

A

B: Runout

65
Q

During the alignment routine there are two very important procedures to
follow in order to get consistent readings on the dial indicator.
A) Softfoot & torque C) Runout & softfoot
B) Torque & sequence D) Sag & sequence

A

B: torque and sequence

66
Q

Rim and face alignment is used where the alignment specifications are more
critical than in rough alignment. This method can be used if there is no….
A) Softfoot C) Eccentricity
B) End float D) Sag

A

B: End float

67
Q

When setting up dial indicators, one of the advantages of this method is that it is
geometrically accurate when used on large diameter couplings with short
spans.
A) Cross dialing C) Face dialing
B) Rim & face dialing D) Rim dialing

A

B: Rim and Face alignment

68
Q

When setting up dial indicators, the indicator plunger should be set up to read
the face of which coupling half?
A) Primary unit C) Drive
B) Prime mover D) None of the above

A

A: Primary unit

69
Q

When taking readings on a coupling, sometimes space limitation requires the
use of an attachment to enable face readings to be taken. What is the
attachment?
A) Spacer C) Face attachment
B) Wiggler D) Edger

A

B: Wiggler

70
Q

When taking a rim reading the dial indicates a (+) result. To correct the
misalignment you would?
A) Insert shims C) Check for runout
B) Remove shims D) None of the above

A

B: Remove shims

71
Q

When aligning couplings with this method, high degrees of accuracy can be
obtained without the concern of dial indicator bracket sag.
A) Feeler gage C) Rim & face
B) Reverse dial D) Laser

A

D: Laser

72
Q

To ensure that shaft alignment is maintained when the machine is in operation
it is advisable to secure the position of both machine units with.
A) Jacking screws C) Leveling screws
B) Doweling D) Vise grips

A

B: Dowling

73
Q

Calculate the following misalignment conditions to determine the correct shim
pack to insert.
Coupling Diameter 10”
Total Indicator Reading on the coupling rim, + .018”
Coupling face & front hold down bolt 8”
Coupling face & back hold down bolt 16”
A) .005” shim pack C) .009” shim pack
B) .006” shim pack D) .018” shim pack

A

C: .009” shim pack

74
Q

A pump heats up under operating conditions. How will you align the unit?
Ambient temperature 75 deg.
Pump operating temperature 280 deg.
Coefficient of expansion for steel .000006”
Shaft center height 18”
A) Pump @ - .012” C) Motor @ - .018”
B) Pump @ + .022” D) Motor @ + .022”

A

D: Motor at +.022”

205 x 18 x .000006 = .022

75
Q

Determine the shim pack required under the front and back feet in the following
misalignment situation.
Coupling diameter 8”
Feeler calculation (gap difference) .037”
Coupling face & front hold down bolt 10”
Coupling face & back hold down bolt 22”
A) Front .046”, back .101” C) Front .055”, back .104”
B) Front .034”, back .133” D) Front .062”, back .022”

A

A) Front .046”, back .101”

76
Q

What class of laser is used in shaft alignment equipment?
A) Class I C) Class III
B) Class II D) Class IIII

A

A: Class 1

77
Q

On a single reflected beam laser unit, where would you mount the
laser/detector unit?
A) On the stationary machine C) On either machine
B) On the prime mover D) On the intermediate machine

A

A: On the stationary machine

78
Q

What part of the laser system performs misalignment calculations?
A) Laser transmitter C) Laser/detector
B) Control unit D) Prism

A

B: Control unit

79
Q

How do you ensure consistent and correct readings at the clock locations?
A) Use a shaft clock chart C) Use a shaft precision level
B) Use an inclinometer D) Use a shaft clock graph

A

B: Use an inclinometer

80
Q

Why should laser alignment systems be shielded from strong heat sources?
A) Extreme heat can cause laser head distortion
B) The prism becomes unstable at high temperatures
C) The beam wanders in elevated temperatures
D) The control unit becomes unstable in heat

A

C: The beam wanders in elevated temperatures

81
Q

What instrument has the ability to measure angles down to minutes or even
seconds, depending on the accuracy of the instrument?
A) Theodolite C) Optical square
B) Tilting level D) Optical level

A

A: Theodolite

82
Q

What instrument is normally used for precision leveling the tilting level?
A) The auto-collimator C) The plum bob
B) The coincidence level D) The optical micrometer

A

B: A coincidence level

83
Q

Why misalign a set of machines at the coupling when performing an alignment?
A) To be within coupling specifications
B) To account for coupling wear
C) To offset for thermal growth
D) To correct for seasonal foundation movements

A

C: to offset for thermal growth

84
Q

What is the value of the information collected when you perform a hot
alignment check?
A) Determines machine foundation integrity
B) Indicates soft foot conditions
C) Reveals improper coupling spacing
D) Reveals relative shaft positions

A

D: reveals relative shaft positions

85
Q

When shafts are not aligned with each other in the vertical and horizontal
planes when running, what is the most common result or symptom?
A) Bearings develop rotational oil whirl
B) Bearings wear until they align themselves
C) Machine vibration levels increase
D) Shaft alignment measurements change

A

C: machine vibration levels increase

86
Q

After locking out a breaker at the M.C.C. and placing the information tag on the
lockout device, what should you do at the machine before commencing with a
coupling alignment?
A) Check to make sure that all tools are available
B) Remove the coupling guard
C) Secure the entire work area
D) Try the local command station

A

D: try the local command station

87
Q

When aligning an electric motor to a hydraulic pump the system including the
accumulators should be bled off and then isolated because.
A) An increase in temperature could cause the pressure safety to open
B) High-pressure trapped oil could backflow through the pump
C) Other components in the system might be energized
D) No system pressure is required

A

B: High pressure oil could back flow through the pump

88
Q

A high-accuracy, short distance laser has an accuracy of:
A) 1 inch in 30 feet C) 0.001 inch in 10 meters
B) 0.010 inch in 100 feet D) 0.0001 inch in 30 feet

A

C: .001” in ten meters

89
Q

What is the purpose of a millwright racking out a breaker within the local
M.C.C. before performing an alignment?
A) To prevent machine shaft rotational drift
B) To prevent machine shaft rotation
C) To prevent accidental starts/stops
D) To prevent breaker contact arcing

A

C: To prevent accidental start/stops

90
Q

Lasers can cause serious eye injury due to:
A) Direct viewing C) Indirect viewing
B) Amplification through targets D) Flashes caused by dust particles

A

A: Direct viewing

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