Unit 5

Question 1

The tool used to create pipe threads on the outside of a pipe is called a

Answer 1

pipe threader or die

Question 2

After brazing a joint in a very tight location, the technician would use an ____________ to determine if the joint is properly brazed.

Answer 2

inspection mirror

Question 3

The dial-type meter used to measure the pressure in a heating unit flue pipe is called ______________.

Answer 3

draft gauge

Question 4

When required to drill holes on a roof that has no power supply, the best drill for the job would be a ____________.

Answer 4

cordless battery powered drill

Question 5

A _____________ is used to measure the amount of O2 in flue products.

Answer 5

oxygen meter

Question 6

A vacuum pump removes ____________ and air from a refrigeration system.

Answer 6

non condensables

Question 7

The tool used to create internal threads is called a ___________.

Answer 7

tap

Question 8

A ______________ is used to measure the percentage of CO in flue products.

Answer 8

carbon monoxide meter

Question 9

Evacuating a system is accomplished with a _____________ and helps to remove air and non-condensables gases from a system.

Answer 9

vacuum pump

Question 10

an instrument that can be used to determine the relative humidity of air is the _____________.

Answer 10

sling psychrometer

Question 11

Short Answer
For what is a soldering gun usually used?

Answer 11

To tin wires. Tin wires can be helpful when screwing down wires at connecting points. Can also repair wires, sensors and boards.

Question 12

What is the major advantage of a clamp-on anmeter?

Answer 12

You can check the amperage of a single wire without breaking the circuit.

Question 13

What does a VOM meter measure?

Answer 13

Voltage, Ohms and Miliamps

Question 14

T/F
The odd shape of the Torx type screw driver is the square shaft used to tighten or loosen set screws

Answer 14

false

Question 15

T/F
Variable speed reversible electric drills can be used to drill holes as well as tighten and loosen screws

Answer 15

true

Question 16

T/F
A programable charging scale measures the VOLUME of refrigerant flow into a refrigeration system

Answer 16

False, it measures weight

Question 17

T/F
An instrument called a clamp-on anmeter is so called because the tongs can be clamped around a single wire

Answer 17

true

Question 18

Name tools used to cut sheet metal duct
a) ___________
b) ___________
c) ___________

Answer 18

tin snips, nibler, electric shears

Question 19

Most common tools used to line up hols on covers and motor mounts
a) ___________
b) ___________
c) ___________
d) ____________

Answer 19

screw driver, scratch awl, punch, round file

Question 20

Name a tool used to close off copper tubing before it is sealed by solder

Answer 20

locking vise grip pliers

Question 21

An electronic leak detector is used to check what 4 types of refrigerants?

Answer 21

CFC, HCFC, HFC, HFO

Question 22

Name 5 types of thermometes

Answer 22

infrared laser, digital, thermo couple, pocket, glass tube

Question 23

Used to measure wet-bulb/dry bulb readings ________.

Answer 23

sling psychrometer

Question 24

I am used in retro fitting mineral oil with poe lubricant and can accurately gauge remaining mineral oil in a system down to one percent.

Answer 24

refractometer

Question 25

you can use me to check static pressure...what am I?

Answer 25

manometer

Question 26

I am used to lube a pillow block bearing, what am I?

Answer 26

grease gun

Question 27

Techs use me to check cfm from exhaust and supply grills a) ____________ b) ____________ c) _____________

Answer 27

flow hood, air balance meter, vein anemometer

Question 28

I have a valve stem with a sharp needle to pierce tubing for charging, testing or purging a) _____________ b) _____________

Answer 28

piercing valve, line tap

Question 29

Tool used to blow holes through 6 in concrete to rough in pipe.

Answer 29

concrete coring tool

Question 30

You can use me to check cubic ft. in a space a) _____________ b) _____________

Answer 30

tape measure, laser tape measure

Question 31

What tools are needed to check subcooling and superheat? a) ___________ b) ___________ c) ____________

Answer 31

manifold gauges, thermocouples, PT chart

Question 32

Responding to a trouble call, the customer says the power went out and just cam back on but ac is not working. What tools would I bring with me to check the AC unit? a) ____________ b) ____________ c) _____________

Answer 32

clamp on multimeter, screw drivers, nut driver and gun

Question 33

You are sent to hang a fcu, what tool do you need to set your unit to mark the anchors location?

Answer 33

4 way laser line, tape measure and marker

Question 34

I can be used to cut threaded rod and unistrut quickly and with little effort.

Answer 34

Band saw or metal circular saw (cold)

Question 35

Tool used to remove fan blades and bearings

Answer 35

puller

Question 36

I can be used to hold sheet metal flanges on ductwork together

Answer 36

vise grip pliers

Question 37

What is used to demo ductwork and threaded rod

Answer 37

reciprocating saw

Question 38

What tool can you use to make clean 1/2" or 3/4" penetrations on electrical disconnect switches without leaving a lot of metal shavings behind?

Answer 38

knock out set or slug buster

Question 39

What tool is used to make a whole in a sheet metal and its not a hole saw?

Answer 39

Drill, unibit or punch

Question 40

What tool would you use to check if an evap is plugged?

Answer 40

manometer

Question 41

What tool can be used to check for air leakage and warm air intrusion?

Answer 41

thermal energy camera

Question 42

Which saw or tool is used to cut free form shapes with tight turns?

Answer 42

jig saw

Question 43

Which tool is used to cut through dry wall to pull tstat wire?

Answer 43

jab saw or key hole saw

Question 44

Duct pressure is measured in what?

Answer 44

inches of water column

Question 45

A smoke test is used to?

Answer 45

Check the amount of leakage and soot in a flue system.

Question 46

What tool is used to cut stainless steel flashing and cut bolts?

Answer 46

grinder

Question 47

Tool used to cut 2x4 and 4x8 sheets of 3/4 ply.

Answer 47

circular saw