Level 3 Final Study Guide

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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


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