ITEC 271 Final Exam Flashcards

(51 cards)

1
Q

Contaminants can be

A

Ingested, built-in, created

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2
Q

We need filters because

A

They protect our system

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3
Q

Performance is measured by

A

Efficiency and capacity

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4
Q

True or False: Efficiency - amount of impurities that the filter can hold before it reaches maximum restriction

A

False

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5
Q

True or False: Capacity is measured as a percentage

A

False

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6
Q

2 threaded components are assembled together using a bolt and nut

A

Bolt

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7
Q

They cannot be involved in bolted joint making due to the presence of at least one thread

A

Screw

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8
Q

True or False: Capacity is the filter’s ability to remove contaminants

A

False

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9
Q

TPI stands for

A

Threads per inch

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10
Q

Poor self healing properties, easily washed away

A

Dry lubricant

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11
Q

True or False: Filters can be interchangeable, as long as they have the same dimensions

A

False

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12
Q

Advantages of fasteners

A

Inexpensive, versatile, lightweight, recyclable

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13
Q

True or False: Adhesive is a substance that is capable of holding materials together

A

True

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14
Q

Most common industrial adhesives are

A

Resins, hot melt, contact spray, acrylic, anaerobic adhesive, conductive, epoxy adhesives, pressure adhesives

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15
Q

True or False: Media, is the part of the filter that does all the filtration

A

True

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16
Q

True or False: Welding is a fabrication process that joins material, woods and metals, or thermoplastics, by using heat to melt

A

False

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17
Q

Some methods to remove water from fuel during filtration are

A

Absorption, coalescing, stripping

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18
Q

True or False: Contact spray allows to bond different items both temporarily and permanently

A

True

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19
Q

True or False: Grease is widely used for its great capacity to dissipate heat

A

False

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20
Q

True or False: Oils are great lubricants to be used in applications with high centrifugal force

A

False

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21
Q

True or False: Arc shielding prevents molten metal from getting in contact with oxygen

22
Q

Some of the functions of oil are

A

Sealing, cleaning, lubrication

23
Q

True or False: Oil is a thin liquid with additives that enhances corrosion, oxidation, and keeps deposits from forming

24
Q

True or False: Increasing temperatures will cause viscosity to increase

25
True or False: Primary filter, is always going to be on the pressure side
False
26
A type of polymer or synthetic origin, long curing time, ideal for woodworking or other applications that require unhurried and careful assembly
Resins
27
Can be used and re-used by applying heat or cold, whenever the user wants, excellent bonding quality, easy to rectify if mistakes have been made
Hot melt
28
Bond different items temporarily and permanently, can be used on uneven and porous surfaces, is waterproof and transparent, environment friendly, does not stain
Contact spray
29
Require time to set and dry, two different components, mixed together, used in construction, used for bonding, sealing and protection
Acrylic
30
Can set without using oxygen or air, good for use when needing to form tight seals without the use of heat, oxygen or light. Can bond different types of materials.
Anaerobic adhesive
31
Used in construction and industries that need to avoid electrostatic discharges. Can improve heat dissipation because they form thermoconductive layers between products and components
Conductive
32
Used in automotive and aircraft industries cure fast and bonds concrete surfaces as well. Used in the manufacturing of plywood
Epoxy
33
Requires pressure to bond (Tapes)
Pressure adhesive
34
A fabrication or sculptural process that joins materials, usually metals or thermoplastics, by using high heat to melt the parts together and allowing them to cool causing fusion
Welding
35
What are the 4 different types of welding?
- Shielded Metal Arc Welding (SMAW) - Gas Metal Arc Welding (GMAW/MIG) - Flux Cored Arc Welding (FCAW) - Gas Tungsten Arc Gas Welding (GTAW/TIG)
36
Is used to join metal to metal by using electricity to create enough heat to melt metal, and the melted metals when cool result in a binding of the metals. AC or DC power source needed. Arc produces temp. of about 6500F steel melts at 2500F
Arc Welding
37
Metals react with elements in the air(oxygen and nitrogen), molten metal comes in contact with the air, oxides and nitrides form, destroying strength and toughness of the weld joint. Arc-weld provides covering.
Arc Shielding
38
A substance, such as oil or grease, used for minimizing friction especially in an engine or component
Lubricants
39
Types of lubricants
Oils, greases, penetrating lubricants and dry lubricants
40
Is a thin liquid made with additives for extra properties. These additives reduce corrosion, reduce oxidization, and keeps deposits from forming
Oil
41
How is oil classified?
Rated based on it’s viscosity (thickness or weight)
42
What does the "W" in a grade (rating) of oil stand for?
Stands for weight, or how viscous (thick) your oil is at cold temperature. The lower the number is, the less thick it is
43
The measurement of the oil’s resistance to shear or flow
Viscosity
44
What is pour point?
The lowest temperature at which an oil will flow
45
What is flash point?
The highest temperature a lubricant can be heated before its vaporized
46
Made out of particles, found in a spray form and mixed with water, alcohol or another solvent that will evaporate after application and leave behind only a thin film
Dry lubricant
47
Advantages of dry lubricants
Protection against corrosion, good lubrication in high humidity, high temp stability, excellent adhesion, excellent conductor of electricity
48
Disadvantages of dry lubricants
Poor self healing properties, easily washed away
49
Advantages of grease
Adhesion, less frequent application, seals, water resistant, reduces noise and vibrations, better mechanical lubrication
50
Disadvantages of grease
Poor dissipation of heat, no filtration so retains contaminants
51
Disadvantages of fasteners
Loses strength under high temperatures, corrodes easily (rusts)