Level 3 Final Study Guide
Puller misalignment when removing a bearing can result in a _____.
damaged shaft
To make both inside and outside measurements, _____ calipers are used.
dial
A problem that can cause fluting to occur on a bearing is _____.
electric arcing
The most accurate type of level is the _____ level.
electronic
The bearing defect that is caused by vibration between the rollers in the bearing raceway is _____.
false brinelling
Use a(n) _____ to measure bearing clearance when installing a spherical roller bearing.
feeler gauge
When minor misalignment exists between two shafts, a _____ coupling is required.
flexible
The type of coupling that has an impeller and a runner is the _____ coupling.
fluid
Precision measuring tools are calibrated using _____.
gauge blocks
Surface plates are usually large blocks of precision-ground and polished steel or _____.
granite
Pumping fluid between the coupling and the shaft to expand the coupling and push it off the shaft is called the _____ removal method.
hydraulic
The method of bearing removal that can cause the bearing to pop off the shaft with considerable force is the _____ method.
hydraulic removal
The method of bearing removal that requires the shaft to be prepared in advance is the _____ method.
hydraulic removal
The side opposite the 90-degree angle of a right triangle is the _____.
hypotenuse
Angular-contact ball bearings are most often mounted in pairs _____ each other.
in opposition to
On dial calipers, the _____ value is read from the scale.
inch
When removing bearings using a puller, pressure should only be applied to the _____.
inner race
Calculating an unknown value between two known values is called _____.
interpolation
The formula for finding the inside-arc and outside-arc cut lengths for odd-angle elbows is _____.
length of arc = 2πr × (degree of bend/360)
When the bubble is centered between the lines on a vial, the surface is _____.
level
Gibs or dowels on a pillow block housing are there for the purpose of _____.
matching the cap and base
Inside micrometers have the _____ on opposite ends.
measuring faces
Slider, gear, chain and grid are types of _____ couplings.
mechanical flexible
The bearing failure that is evidenced by a rolling element track in the raceway is _____.
misalignment
A number expressed in one unit of measurement can be converted to another unit of measurement using _____.
multiplication or division
A micrometer is used to take precise measurements of _____.
nonmoving parts
Spalling seen on a failed bearing is an indication that it has failed due to _____.
normal fatigue
When a bearing wears out, it is called _____ failure.
normal fatigue
The set is the distance, center to center, that the pipeline is to be _____.
offset
The level that has a telescopic sight with a sensitive spirit level is the _____ level.
optical
When removing a bearing from a housing, position the bearing so that pressure is only exerted on the _____.
outer race
The most commonly used micrometers are _____.
outside micrometers
A blue-colored bearing can indicate _____ of the bearing.
overheating
On a dial indicator, any movement of the _____ moves the pointer on the dial.
plunger
An example of a driven machine is a(n) _____.
pump
An instrument used to accurately measure temperatures in the higher ranges is a _____.
pyrometer
The V-groove on the flat surface of a mechanic's level is used for settings on _____.
round pieces
A coupling that depends on centrifugal force to provide turning power is the _____ coupling.
shot
The coupling that depends on centrifugal force to provide its turning power is the _____.
shot
The ratio for the tangent trig function is _____.
side opposite/side adjacent
The height at which a 24-foot ladder strikes a wall is found by the formula _____.
sin angle = side opposite/hypotenuse
In applications that require smooth, even starts, it is best to use a _____ coupling.
soft-start
When installing a spherical roller bearing, the locknut is tightened using a(n) _____.
spanner wrench
The coupling whose halves are interchangeable with other halves and inserts is the _____.
spider
The part of a micrometer that is adjusted to touch the opposite edge of the surface to be measured is the _____.
spindle
Height gauges are used for measuring and marking vertical distance from a _____.
surface plate
A measurement expressed in one type of unit can be quickly read as another type of unit by using a(n) _____.
table of equivalents
A level should remain in place long enough to reach _____.
the same temperature as the object being measured
Master levels generally have _____ vials to measure cross-level and precision level.
three
The most important factor when installing interference fit bearings by heating them is _____.
timing
The most common tool for heating a bearing for removal is a(n) _____.
torch
The formula for the relationship of the travel to the run is _____.
travel = run ÷ cosine
Four types of calipers are inside, outside, _____.
vernier, and dial
Before they can be used together, gauge blocks must be _____.
wrung
The thousandths of an inch scale lines on the thimble of a zero-to-one micrometer are graduated in _____ increments.
0.001
The vernier scale on a vernier caliper reads accurately to _____ inch.
0.001
The number on the line of the vernier scale that lines up with the beam is the _____ value.
0.001 inch
The mechanic's level is accurate to _____ inch.
0.005
The cosine of an angle that has an adjacent side of 10 inches and a hypotenuse of 14 inches is _____.
0.7143
Find the numerical value of sin 46.5 degrees. (Refer to Table 1.)
0.7254
A mechanical tachometer is used on machinery that rotates at less than _____ rpms.
10,000
The travel of a piping offset that has a set of 4 inches and an angle of 22-1/2 degrees is _____ inches.
10-1/2
The run of a piping offset that has a travel of 12 inches and an angle of 22-1/2 degrees is _____ inches.
11.1
If a 45-degree offset has a run of 8 inches, the travel is _____ inches.
11.3
The takeout of a 14-inch, 60-degree long-radius welding elbow is _____ inches.
12.12
The sum of all the angles of any triangle is _____ degrees.
180
The travel of a piping offset that has a run of 15 inches and an angle of 45 degrees is _____ inches.
21.2
The set of a piping offset that has a run of 22 inches and an angle of 45 degrees is _____ inches.
22
The angle of an offset that has a run of 14 inches and a set of 6 inches is _____ degrees.
23
A pyrometer is capable of reading temperatures up to _____.
3,000°C
The run of a piping offset that has a set of 6 inches and an angle of 60 degrees is _____ inches.
3-1/2
The most common way to remove bearings is to use _____.
a bearing puller
A pillow block bearing failure that is caused by an undersized shaft is _____.
a broken cam
The most common cause of brinelling is _____.
a mounting error
A damaged bearing seal is likely to cause _____ of the bearing.
contamination
A pipeline is to be laid in a trench where it will have to pass around a concrete caisson. The set is 20 feet; the run is 34 feet 8 inches; the angle is _____ degrees.
30
The angle of a piping offset that has a set of 5 inches and a travel of 10 inches is _____ degrees.
30
A cast iron blind flange is 3 inches thick and has a 24-inch outside diameter. Cast iron weighs 450 pounds per cubic foot. Ignoring the bolt holes, the flange weighs _____ pounds. (Round to nearest tenth.)
353.4
The length of pipe needed for an offset, if the set is 20 feet, the run is 34 feet 8 inches, ignoring the fittings, must be _____.
40 feet
The angle of a piping offset that has a run of 9 inches and a travel of 12 inches is _____ degrees.
41
The reference angle in a right triangle that has an opposite side that is 8 inches and an adjacent side that is 9 inches is _____ degrees. (Refer to Table 1).
42
A pipeline is to be tied into another line already in existence. The set and the run are both 48 inches. The angle is _____ degrees.
45
The vernier caliper is made in standard lengths up to _____ inches.
48
The angle of a piping offset with a run of 9-1/2 inches and a set of 11 inches is _____
49
The set of a piping offset that has a travel of 10 inches and an angle of 30 degrees is _____ inch(es). (Refer to Table 1).
5
Angle A in triangle ABC, when the hypotenuse is 17 inches and the side opposite is 13 inches, is _____ degrees.
50
Laboratory master gauge blocks are classified as Grade _____.
AA
Which of the following statements applies when heating a bearing with a torch during the removal process?
Do not reuse a bearing removed this way.
A grid coupling is also called a _____.
Falk
Face-to-face mounted angular-contact ball bearings are used in applications that _____.
allow for small amounts of misalignment
A mechanical tachometer is used to measure rpms or _____.
angular velocity
The two causes of thrust failure are improper installation and improper _____.
application
Shafts can be removed from a bearing using a hydraulic press or a(n) _____.
arbor press
Thrust bearings are typically applied to a shaft using a(n) _____.
arbor press or hydraulic press
A cutting torch is used to remove bearings _____.
as a last resort
Shaft damage can be reduced when a bearing is cut off with a torch by using a _____.
bent cutting tip
In perfectly aligned applications, the load is evenly distributed _____ of the gear coupling.
between all the teeth
Master levels must be handled carefully to prevent _____ from affecting readings.
body heat
A shock load to the bearing can cause _____.
brinelling
Slip-fit bearings are often installed _____.
by hand
