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ITEC 271 > ITEC 271 Final Exam > Flashcards

ITEC 271 Final Exam Flashcards

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

A

True

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

A

False

24
Q

True or False: Increasing temperatures will cause viscosity to increase

A

False

25
Q

True or False: Primary filter, is always going to be on the pressure side

A

False

26
Q

A type of polymer or synthetic origin, long curing time, ideal for woodworking or other applications that require unhurried and careful assembly

A

Resins

27
Q

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

A

Hot melt

28
Q

Bond different items temporarily and permanently, can be used on uneven and porous surfaces, is waterproof and transparent, environment friendly, does not stain

A

Contact spray

29
Q

Require time to set and dry, two different components, mixed together, used in construction, used for bonding, sealing and protection

A

Acrylic

30
Q

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.

A

Anaerobic adhesive

31
Q

Used in construction and industries that need to avoid electrostatic discharges. Can improve heat dissipation because they form thermoconductive layers between products and components

A

Conductive

32
Q

Used in automotive and aircraft industries cure fast and bonds concrete surfaces as well. Used in the manufacturing of plywood

A

Epoxy

33
Q

Requires pressure to bond (Tapes)

A

Pressure adhesive

34
Q

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

A

Welding

35
Q

What are the 4 different types of welding?

A
  • Shielded Metal Arc Welding (SMAW)
  • Gas Metal Arc Welding (GMAW/MIG)
  • Flux Cored Arc Welding (FCAW)
  • Gas Tungsten Arc Gas Welding (GTAW/TIG)
36
Q

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

A

Arc Welding

37
Q

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.

A

Arc Shielding

38
Q

A substance, such as oil or grease, used for minimizing friction especially in an engine or component

A

Lubricants

39
Q

Types of lubricants

A

Oils, greases, penetrating lubricants and dry lubricants

40
Q

Is a thin liquid made with additives for extra properties. These additives reduce corrosion, reduce oxidization, and keeps deposits from forming

A

Oil

41
Q

How is oil classified?

A

Rated based on it’s viscosity (thickness or weight)

42
Q

What does the “W” in a grade (rating) of oil stand for?

A

Stands for weight, or how viscous (thick) your oil is at cold temperature. The lower the number is, the less thick it is

43
Q

The measurement of the oil’s resistance to shear or flow

A

Viscosity

44
Q

What is pour point?

A

The lowest temperature at which an oil will flow

45
Q

What is flash point?

A

The highest temperature a lubricant can be heated before its vaporized

46
Q

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

A

Dry lubricant

47
Q

Advantages of dry lubricants

A

Protection against corrosion, good lubrication in high humidity, high temp stability, excellent adhesion, excellent conductor of electricity

48
Q

Disadvantages of dry lubricants

A

Poor self healing properties, easily washed away

49
Q

Advantages of grease

A

Adhesion, less frequent application, seals, water resistant, reduces noise and vibrations, better mechanical lubrication

50
Q

Disadvantages of grease

A

Poor dissipation of heat, no filtration so retains contaminants

51
Q

Disadvantages of fasteners

A

Loses strength under high temperatures, corrodes easily (rusts)

ITEC 271 (4 decks)

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