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HVAC Tools Exam > Pre-read/Pre-test questions > Flashcards

Pre-read/Pre-test questions Flashcards

1
Q

Emery cloth, which is a type of ______, is used to clean and smooth surfaces

A

Abrasive

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2
Q

When cutting holes for air registers and vents, it is best to use a ____.

A

reciprocating saw

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3
Q

When installing parts that must be straight, plumb, or perfectly horizontal, use a ____.

A

level

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4
Q

A twist drill bit has ____ to remove chips from the hole as it is being drilled.

A

flutes

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5
Q

A ____ wrench is used to measure and regulate the amount of tightness applied to a fastener.

A

torque

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6
Q

Which of the following grades of emery cloth is the finest grade?

A) 1/2
B) 1
C) 00
D) 0000

A

0000

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7
Q 
A \_\_\_\_ punch is used to drive out keys and to line up holes in mating parts.
A) prick
B) pin
C) drift
D) center
A

drift

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8
Q 
When dipped in a bath of ice and water, a thermometer should read within 1°F of \_\_\_\_.
A) 0°F
B) 20°F
C) 32°F
D) 212°F
A

32 degrees F

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9
Q 
Which type of fastener could be used to hold together pieces that must be dismantled frequently?
A) Machine screws.
B) Bolts.
C) Cap screws.
D) All of the above.
A

All of the above

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10
Q 
A \_\_\_\_ punch is used to mark the location of a hole that needs to be drilled.
A) center
B) drift
C) pin
D) prick
A

center

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11
Q

A manometer is typically used to measure pressure values that are hundreds of psi greater than atmospheric pressure.

A

False

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12
Q

A multimeter can measure the voltage, resistance, and current of a circuit.

A

True

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13
Q

When parts are disassembled, gaskets are used to clean the parts before they are reassembled.

A

False

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14
Q

Alcohol is an acceptable cleaning solvent for refrigeration system components.

A

True

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15
Q

Service technicians will typically have to supply some of their own hand tools to perform HVACR repair.

A

True

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16
Q

In the whole number system for identifying drill bit sizes, a No. 50 drill bit has a larger diameter than a No. 20 drill bit.

A

False

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17
Q

Describe a box-end wrench

A

Enclosed grips on each side to safely grip the nut or bolt

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18
Q

Describe an open-end wrench

A

Open grips on each side with a different size head

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19
Q

Describe a combonation wrench

A

Has the same size open end head and box end head on each side

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20
Q

Adjustable wrenches are for _______ torque only

A

medium

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21
Q

Describe a flare nut wrench

A

Similar to an open end wrench only with a smaller opening in the gripping head. Used for flare nuts with SAE fittings.

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22
Q

How many points do hex keys (Allen keys) have?

A

six

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23
Q

What end of a service valve wrench must be used for cracking service valves?

A

The fixed (locked) end.

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24
Q

Why is a torque wrench important?

A

To provide proper amount of tightness and avoid warping or damaging parts.

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25
Q

Two common types of hammers used by HVACR Technicians?

A

Ball peen and Standard straight claw hammer

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26
Q

What should be used when putting tube in a vice?

A

Brass jaw caps

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27
Q

What is a shank?

A

Part of the bit that clamps onto the chuck

28
Q

A tap drill should be slightly _____ than the inside diameter of the threads for which the hole is being drilled

A

larger

29
Q

A pin punch is used for

A

driving pins in or out

30
Q

Prick punch (Scratch Awl) is used for

A

layout work

31
Q

A hacksaw blade should not be stroked faster than

A

60 strokes per minute

32
Q

Hacksaw blades are _______

A

directional

33
Q

Use a ______ drill to make holes in masonry

A

hammer

34
Q

How would you check a thermometers accuracy?

A

ice water bath

35
Q

A manometer with a pitot tube is used for measuring ______ in ductwork

A

velocity

36
Q

A manometer is a type of pressure gauge that measures values around atmospheric pressure.

A

True

37
Q

What are gaskets for?

A

To make a leak-proof joint

38
Q

Keep files clean by using a ______

A

file card

39
Q

trade name of a regular adjustable wrench?

A

crescent or craftsmen wrench

40
Q

Another name for a close-quarter tube cutter?

A

Imp cutter

41
Q

Tube cutters can cut _______ and ________ tubing

A

copper and aluminum

42
Q

Most important part of using a tube cutter is to make sure:

A

Make sure you tighten the cutting wheel 1/4 at a time ensuring a full turn.

43
Q

What is an inner/outer reamer used for?

A

removing burrs from the inside and outside of tubing

44
Q

Swaging tools are used to join two pipes of the same size together

A

True

45
Q

Tube benders are available in ________ , ________ and the _______ type

A

spring, lever, gear

46
Q

What are tube brushes used for?

A

To remove oxidization from copper tubing, pipe, and fittings in preparation for soldering or brazing

47
Q

Pinch off tool (vice-grips, locking pliers) is used to

A

seal off copper tubing

48
Q

What is a vacuum pump for?

A

for servicing air conditioning and refrigeration systems by removing air and non-condensable gases from the system.

49
Q

What is a fin straightener for?

A

straightening condenser and evaporator coil fins 8,9,10,12,14 and 15 fins per inch

50
Q

Why are heat guns needed?

A

To warm refrigerant and melt ice

51
Q

What is a soldering gun primarily used for?

A

To solder electrical connections

52
Q

A flaring tool is used to

A

put a flare on the end of copper tubing

53
Q

What is a sling psychrometer used for?

A

to obtain relative humidity readings quickly using the wet-bulb/dry-bulb principle

54
Q

two types of refrigerant leak detectors are?

A
  • electronic leak detector
  • high-intensity ultraviolet lamp leak detector
  • ultrasound leak detector
55
Q

list the components usually associated with a gauge manifold unit?

A
  • compound gauge (low pressure and vacuum)
  • high pressure gauge
  • manifold
  • valves
  • hoses
56
Q

list three types of thermometers

A

glass stem, digital, dial indicator

57
Q

What is the purpose of a draft gauge?

A

check the pressure of the flue gas in gas and oil furnaces to ensure that the flue gases are moving up the flue at a satisfactory speed

58
Q

When are air velocity measurement instruments used?

A

for balancing duct systems, checking fan and blower characteristics, and making static pressure measurements

59
Q

The three types of nails are

A
  1. common nail
  2. finishing nail
  3. masonry nail
60
Q

The term _____ is used to indicate the size of a common nail

A

penny

61
Q

An outward clinch tacker is used to

A

spread the ends of a staple outwards

62
Q

wood screws generally have a

A

flat, round, or an oval head

63
Q

List and describe three methods of securing an object to a wall made of gypsum board

A
  1. Wall anchors
  2. Toggle bolts
  3. Plastic toggle drywall anchors
64
Q

What are masonry nails made from?

A

hardened steel

65
Q

hollow rivets are assembled in a pin that is often called:

A

a mandrel

66
Q

ensure wrenches are the proper size and type because many fasteners and HVACR system parts are ______ or ______ which are soft metals

A

copper or brass

HVAC Tools Exam (4 decks)

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