Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

2nd 6 Month Final > Lubrication TPC > Flashcards

Lubrication TPC Flashcards

1
Q

A thin layer of lubricant between 2 surfaces enables 1 surface to _______ another.

A

Slide over

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

By separating 2 surfaces slightly, a lubricant helps reduce _______.

A

Wear

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

An oil cooler radiates heat into the air, usually through:

A

Metal fins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

At normal room temperature, grease is (a):

A

Semisolid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the 4 physical forms of lubricants?

A

Liquid, solid, gas, and semisolid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The most important property of a lubrication oil is its:

A

Viscosity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Viscosity of an industrial lubrication oil is measured in:

A

Saybolt Universal Seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Grease is used where liquid lubricant would leak or where frequent lubrication is not:

A

Possible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

When water enters a system and gets churned up with oil, it creates a(n):

A

Emulsion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Grease is most commonly a __________ that has been thickened with _____.

A

Mineral oil; soap

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Oil additives that react with metal to form a sulfide or chloride coating are called:

A

Extreme-pressure additives

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

In full-film lubrication, the moving surfaces are:

A

Completely separated from each other

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Detergent dispersant additives are ______________ containing metallic elements

A

Organic Salts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which type of additive is used to help a lubricant adhere better to metal surfaces?

A

Tackiness Agent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

A major advantage of using grease as a bearing lubricant is that grease…

A

Acts as a seal for the bearing housing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Animal fat is sometimes included in ________________ oil to help it stick to the surface being lubricated.

A

Steam cylinder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

The 4 basic conditions that determine lubricant choice are load, temp, speed, and _________.

A

Environment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What are the 2 most common additives used in general purpose oils?

A

Anti-oxidants and Rust preventitives

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Paraffin-base oils have a ______ viscosity and a ______ pour point.

A

High; high

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Naphthene-base oils are especially good lubricants for _________ because they contain little to no wax.

A

Refrigeration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

The function of soap in the grease is to:

A

Hold the oil

22
Q

Calcium-soap greases begin to ________ if the temp rises above 180 degrees

A

Dry-out

23
Q

Non-soap bases for greases include:

A

Clay minerals, gels, and organic complexes

24
Q

Most greases contain from ______ to ______% oil.

A

70-90%

25
Q

Greases are classified by their:

A

Type of thickener

26
Q

The ability of an EP grease to overcome short-cycle, high load conditions depends on the ________ of the ______.

A

Film strength; oil

27
Q

The primary charateristic of calcium-soap greases is their resistance to ______.

A

water

28
Q

The particles of “lamellar” additives are _________ in shape.

A

Thin and flat

29
Q

What is the most common additive used to give multi-purpose grease EP characteristics?

A

Sulfurized oil

30
Q

Which type of binding agent works best with dry film lubricants at temps over 600degrees F?

A

Ceramic

31
Q

One of the operating requirements of a lubricating device is its ability to:

A

Regulate lubricant flow

32
Q

Drip feeding oiling depends of ______ for its operation

A

Gravity

33
Q

The sump for a splash or ring-type natural lubrication system is:

A

Part of the machine housing

34
Q

Mist lubrication systems are similar in operation to air line lubrication, but they handle _____ lubricant at ______ pressure

A

More; lower

35
Q

Drip-feed greaser is _____ a method of manual grease lubrication.

True or False?

A

NOT; true

36
Q

In a 2-line header lubrication system, the control valve:

A

Reverses the lubricant flow

37
Q

The tapered tube sight-glass can show the lubricant:

A

Flow AND flow rate

38
Q

The parallel tube sight-glass can show the lubricant:

A

FLOW ONLY

39
Q

In a single-line header lubrication system, lubricant is supplied to the metering device by the _____.

A

Pump

40
Q

In a progressive metering system, additional outlets can be added ______ at a time.

A

2

41
Q

Used lubricating oils can be made suitable for re-use by purification or :

A

Reclamation

42
Q

Final filtering of fluids can be accomplished by using:

A

Sintered material

43
Q

Lubricants stored outside during cold weather must be ____________ before use.

A

Brought inside for several days

44
Q

To purify lubricants, a centrifuge uses _______ to separate the water and oil.

A

Disks

45
Q

What is the difference between a centrifugal purifier and clarifier?

A

Clarifier does not remove water

46
Q

The main purpose of using route sheets for all lubricators is to:

A

Make sure all lubrication is performed

47
Q

One of the best ways to prevent lubricators from using wrong lubricant is to provide:

A

Color-coded fittings on the equipment

48
Q

The first step in computerizing a plant’s lubrication program is to:

A

Survey all lubrication requirements

49
Q

On a lubrication survey form, the _____________ tells the order in which machines appear on a route.

A

Sequence number

50
Q

A lubrication program change notice alerts the maintenance department that the:

A

Required oil change is due

2nd 6 Month Final (11 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions