# Pipe Fitter Star

189 Questions | Total Attempts: 1023  Settings  Star Practice

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• 1.
How many pounds does a cubic foot of water weigh?
• A.

50

• B.

62-1/2

• C.

65.4

• D.

73-1/2

• 2.
• A.

7.48

• B.

144

• C.

231

• D.

1,728

• 3.
One foot of water is equal to what psig reading?
• A.

.0361 psig

• B.

.433 psig

• C.

2.31 psig

• D.

4.33 psig

• 4.
The amount of heat energy required to raise one pound of water one degree Fahrenheit is how many Btu?
• A.

1

• B.

8.3

• C.

12

• D.

144

• 5.
One pound per square inch of water pressure is equal to a column of water _____ feet in height.
• A.

1.5

• B.

2.0

• C.

2.3

• D.

3.0

• 6.
The isometric compass shown in the Figure 15 represents which isometric view?
• A.

North east

• B.

North west

• C.

South east

• D.

South west

• 7.
In the Figure shown here, the distance “X” shall be at least how many inches?
• A.

1

• B.

2

• C.

6

• D.

12

• 8.
The line below represents which of the following?
• A.

180( hot water system)

• B.

Coldwater system

• C.

Condensate line

• D.

Hot water system

• 9.
Which of the following layout rules CANNOT be used to establish a 90 degree angle?
• A.

3-4-5

• B.

4-5-6

• C.

6-8-10

• D.

12-16-20

• 10.
Which of these is the most commonly used scale rule in the piping trades?
• A.

Architects

• B.

Engineers

• C.

Metric

• D.

None of the above

• 11.
On a set of drawings where are the finished grades typically found?
• A.

Electrical plan

• B.

Plumbing plan

• C.

Site plan

• D.

Structural plan

• 12.
Dimension "A" equals _____ inches.
• A.

16.61

• B.

23.5

• C.

26.5

• D.

33.23

• 13.
Dimension "B" equals _____ inches.
• A.

16.61

• B.

23.5

• C.

26.5

• D.

33.23

• 14.
Dimension "C" equals _____ inches.
• A.

9.73

• B.

16.61

• C.

23.5

• D.

26.5

• 15.
Which type of units are used to rate welding machines?
• A.

Duty cycle

• B.

Open circuit voltage

• C.

Voltage output

• D.

Watts per hour

• 16.
The impeller of a centrifugal pump is shown below.  In which direction should it rotate?
• A.

CW

• B.

CCW

• C.

It does not matter.

• D.

Rotates in both directions

• 17.
If it is ever necessary to reduce pump flow
• A.

Install a timer

• B.

Install reducer

• C.

Throttling the discharge

• D.

Throttling the suction line

• 18.
• A.

13lbs

• B.

2891bs

• C.

2541bs

• D.

300lbs

• 19.
Steel pipe 380 feet long is heated from 620 to 1710 how much did the pipe expand? (Coefficient of thermal expansion for steel pipe is .0000067)
• A.

4 1/2”

• B.

3 5/16”

• C.

5 118”

• D.

1 1/2”

• 20.
A machine has a primary pulley of 6 in. and a secondary pulley of 24 in. What is the gear ratio?
• A.

6 to 24

• B.

24 to 1

• C.

4 to 1

• D.

8 to 1

• 21.
6. A pipe stands 126 feet high and is filled with water. What is the pressure at 30 feet above the bottom?
• A.

9.6 psi

• B.

20 psi

• C.

41 psi

• D.

96 psi

• 22.
If a gallon of water occupies .135 cubic feet how many gallons will a tank 5ft.long, 24 inches wide and 4 feet deep hold.
• A.

235

• B.

252

• C.

296

• D.

312

• 23.
Convert .25 feet to an inch measurement.
• A.

1/4”

• B.

2 1/2”

• C.

25”

• D.

3”

• 24.
What is the area of a circle if the diameter is 18 inches?
• A.

254.46 sq in

• B.

211.06 sq in

• C.

184 sq in

• D.

278.71 sq in

• 25.
The change in state from a solid to a liquid is known as
• A.

Vaporization

• B.

Flashing

• C.

Fusion

• D.

Sublimation

• 26.
The treatment of liquids in motion is known as
• A.

Hydro - dynamics

• B.

Hydraulics

• C.

Hydrostatics

• D.

Pneumatics

• 27.
The weight of 1 cubic foot of water is
• A.

8.33lbs

• B.

7.48lbs

• C.

62.4 lbs

• D.

14.7 lbs

• 28.
The specific weight of air and water is.
• A.

2.31

• B.

1

• C.

3.1416

• D.

14.7

• 29.
The density of water is?
• A.

8.33

• B.

7.48

• C.

62.4

• D.

14.7

• 30.
What should an outside attendant do to rescue a worker who shows physiological effects of exposure in a confined space?
• A.

Attendant should rescue immediately.

• B.

Attendant begin rescue after notifying a response team.

• C.

Notify response team and allow them to rescue.

• D.

Get another worker to aid in rescue

• 31.
The treatment of liquids at rest is known as
• A.

Hydro - dynamics

• B.

Hydraulics

• C.

Hydrostatics

• D.

Pneumatics

• 32.
The density of 1 cu in of Mercury is
• A.

8.331bs

• B.

7.481bs

• C.

62.41bs

• D.

.491 Ibs

• 33.
A pipe stands 252 feet high and is filled with water. What is the pressure at 30 feet above the bottom?
• A.

9.6 psi

• B.

20 psi

• C.

41 psi

• D.

96 psi

• 34.
What is the area of a circle if the diameter is 2’?
• A.

254.46 sq in

• B.

3.14SqFt

• C.

184 sq in

• D.

278.71 sq in

• 35.
The change in state from a Liquid to a gas is known as
• A.

Vaporization

• B.

Flashing

• C.

Fusion

• D.

Sublimation

• 36.
The use of air as a power source is known as
• A.

Hydro - dynamics

• B.

Hydraulics

• C.

Hydrostatics

• D.

Pneumatics

• 37.
Exits from a trench 150 foot long and 4 foot deep must be located within how many feet of a worker in the trench?
• A.

75 feet

• B.

10 feet

• C.

100 feet

• D.

25 feet

• 38.
For an extension ladder to be at the correct angle for safe use on a working surface 20 feet high. The ladder must be located how many feet away from the base?
• A.

10

• B.

7

• C.

3

• D.

5

• 39.
When the crane signaler's hand is pointed up with his/her finger moving in a circle, it means to
• A.

Stop

• B.

• C.

• D.

Raise the boom

• 40.
A sling is weakest in which position?
• A.

Choked position

• B.

• C.

Straight pull

• D.

Hitch

• 41.
The best knot to use when lifting pipe vertically is the
• A.

Bowline with a half hitch

• B.

Clove hitch with a half hitch

• C.

Pipe Hitch with a half hitch

• D.

Sheepshank

• 42.
Horizontal steam supply piping should be reduced in size by using
• A.

Concentric reducer

• B.

Reducing bushing

• C.

Eccentric reducer ( flat on top)

• D.

Eccentric reducer ( flat on bottom)

• 43.
A float and thermostatic trap is a
• A.

Thermostatic / thermodynamic trap

• B.

Mechanical/thermodynamic trap

• C.

Float / Bucket Trap

• D.

Mechanical/Thermostatic

• 44.
A vent is not needed on a condensate receiver when
• A.

Gravity return is used

• B.

Vacuum return is used

• C.

Mechanical return is used

• D.

Never

• 45.
Steam supply using parallel flow is
• A.

Critical velocity

• B.

Steam and condensate flowing in opposite directions

• C.

Steam and condensate flowing in the same direction

• D.

Up-feed

• 46.
A Hartford Loop is used for
• A.

• B.

Loop vent

• C.

Protection for loss of water in the boiler

• D.

Expansion loop

• 47.
A bushing is not a good replacement for a reducer because they
• A.

Are stronger

• B.

Are cheaper

• C.

Offer more resistance to flow

• D.

Require less space

• 48.
What is the main reason for the taper on a pipe thread?
• A.

Eliminate use of couplings

• B.

Insure progressively tighter fit

• C.

Allow for tolerance on length

• D.

Simplify assembly

• 49.
The color code for Type K copper tubing is
• A.

Red

• B.

Yellow

• C.

Blue

• D.

Green

• 50.
The best method to ensure that a plastic joint is made properly, you should:
• A.

Insert pipe into fitting and hold

• B.

Insert pipe into fitting and turn 1/4 turn and hold

• C.

Allow glue to set first and then insert I pipe into fitting

• D.

Insert pipe into fitting and then re-glue the outside of pipe and fitting

• 51.
Which of the following types of clamps are used to dampen a pipe's movement?
• A.

Snubber

• B.

Trapeze

• C.

Clevis

• D.

Friction

• 52.
To properly align a flange you must perform what is commonly called a_______ hole:
• A.

One

• B.

Three

• C.

Two

• D.

Four

• 53.
To order a reducing tee you should specify the size by:
• A.

Large end to center to smaller end

• B.

Large end to smaller end to center

• C.

Left to center to right

• D.

Center to right to left

• 54.
The specific Gravity of a liquid can only be measured using the following instrument:
• A.

Scale

• B.

Hydrometer

• C.

Thermometer

• D.

Manometer

• 55.
The symbol ∏, is equivalent to
• A.

1.414

• B.

.414

• C.

3.14

• D.

.707

• 56.
The amount of heat it takes to raise one pound of water one degree Fahrenheit is known as a/an
• A.

Joule

• B.

Calorie

• C.

Watt

• D.

BTU

• 57.
When should a person designated as a attendant (hole watch) attempt to rescue a worker that is trapped?
• A.

As soon as the worker fails to respond.

• B.

As soon as he feels it is safe.

• C.

Never

• D.

As soon as he notifies the rescue team

• 58.
What is the required distance for a crane to maintain from a 50Kv power line?
• A.

15'

• B.

10'

• C.

20'

• D.

0' as long as the power line is insulated.

• 59.
Which rigging configuration has the greatest sling strength?
• A.

Choked

• B.

Straight

• C.

• D.

• 60.
When lifting objects with sharp edges, you should use a:
• A.

Softener

• B.

Shackle

• C.

File

• D.

Round the sharp edge

• 61.
What are the three types of steam traps?
• A.

Thermostatic, Bucket, Float

• B.

Float, Thermodynamic, Bucket

• C.

Thermostatic, Thermodynamic, and Mechanical

• D.

Orifice, Float and Thermostatic, and Bucket

• 62.
What should be done to prepare a flange for the gasket installation?
• A.

Grind the faces

• B.

Lubricate the faces

• C.

Nothing

• D.

Remove any paint or rust.

• 63.
A direct acting thermostat is used to
• A.

Increase the pressure when the temperature increases

• B.

Control a normally open valve

• C.

Control a normally closed valve

• D.

Decrease pressure when the temperature increases

• 64.
What is the purpose of the oxygen and acetylene regulators?
• A.

To protect the cylinders from debris

• B.

To act as a handle to carry the cylinders

• C.

To change the liquid into a usable gas

• D.

To reduce the pressures from the cylinder to safe and workable pressures

• 65.
The ____ is used to protect the weld puddle from contamination in the SMAW process.
• A.

Arc

• B.

Flux

• C.

Slag

• D.

Argon

• 66.
What does the G stand for in 2G, 5G, and 6G weld positions?
• A.

Groove

• B.

Gap

• C.

Gravity

• D.

Gauge

• 67.
What is Hydronics?
• A.

The science of waves

• B.

The science of heat transfer using water

• C.

The science of water flow

• D.

The science of refrigerant flow

• 68.
What effect does the fill pressure (static) have on a closed loop pumping system?
• A.

It makes the pump more efficient

• B.

It makes the pump less efficient

• C.

It causes the pump to overheat

• D.

None

• 69.
What has the largest effect on pump alignment?
• A.

Flange rotation

• B.

Pipe strain

• C.

Pump horse power

• D.

Inertia

• 70.
A cooling tower must have a ___ or be open-site.
• A.

Backflow preventer

• B.

RSP

• C.

Flow Meter

• D.

Valve

• 71.
In a refrigeration system, a condensable gas is
• A.

Ammonia

• B.

Air

• C.

Carbon Dioxide

• D.

Oxygen

• 72.
What causes pressure drop?
• A.

Increase in friction

• B.

Decrease in velocity

• C.

Decrease in friction

• D.

Temperature

• 73.
An up-feed steam heating system has the heating units
• A.

Below the main

• B.

Above the main

• C.

Above the Hartford loop

• D.

Below the Hartford loop

• 74.
How far should a copper tube be inserted into a cup for a brazed joint?
• A.

All the way to the shoulder

• B.

Half way into the cup

• C.

At least equal to the diameter of the tube

• D.

To the shoulder less 1116".

• 75.
Capillary action is used in
• A.

Flair Joints

• B.

Solder Joints

• C.

Compression Joints

• D.

• 76.
Which of the following is sometimes used as a shielding gas in the GTAW process?
• A.

Oxygen

• B.

Acetylene

• C.

Argon

• D.

Compressed Air

• 77.
To sense the temperature remotely from the thermostat location you would use:
• A.

Remote Bulb

• B.

Insertion Bulb

• C.

Capillary Tube

• D.

Immersion Sensor

• 78.
All of the following are process control elements except:
• A.

Controller

• B.

Sensor

• C.

Piping

• D.

Valve

• 79.
What would be the result of an incorrectly installed orifice plate?
• A.

• B.

• C.

Damage to the plate

• D.

• 80.
Where should the high pressure condensate be piped to before entering the receiver?
• A.

Flash Tank

• B.

De-Super heater

• C.

Air Separator

• D.

Vent

• 81.
What is not a requirement to size the steam trap on a heating unit?
• A.

Condensate Pump Size

• B.

• C.

Pressure Differential

• D.

Maximum Pressure

• 82.
A tag line should be used on a crane lift:
• A.

Only if the Load is over 5 Tons

• B.

Always

• C.

Only if the Winds are above 15 MPH

• D.

When a Spreader Bar is not Used

• 83.
To stop all crane movement the __ signal should be used.
• A.

• B.

Hold Tight

• C.

Dog Everything

• D.

Dog Down

• 84.
What goes GFCI stand for?
• A.

Good Fortune Consumes Individuals

• B.

Ground Fault Current Integration

• C.

Ground Fault Circuit Interrupter

• D.

Gross Flow Circuit Interrupter

• 85.
When loosening the bolts on a flange one should
• A.

Loosen the top bolts first

• B.

Loosen the far bolts first

• C.

Loosen the bottom bolts first

• D.

Loosen the near bolts first

• 86.
With a high pressure valve you should never __ under pressure.
• A.

Repack it

• B.

Removing the packing

• C.

Over pack it

• D.

Tighten the packing

• 87.
One pound per square inch of water gauge pressure is equal to
• A.

.433 Ft

• B.

1.414Ft

• C.

2.31 Ft

• D.

.707 Ft

• 88.
A simple example of a lever is
• A.

A chain fall

• B.

A wheel

• C.

A pry bar

• D.

A wedge

• 89.
When a liquid changes immediately to a vapor it is called
• A.

Flashing

• B.

Sub Cooling

• C.

Condensing

• D.

Superheating

• 90.
To determine the travel for a 45 degree rolling offset you would
• A.

Multiply the roll + set by .414

• B.

Multiply the length of the hypotenuse of the roll and the set by .707

• C.

Multiply the length of the hypotenuse of the roll and the set by 1.414

• D.

Multiply the roll and the set and multiply by 1.414

• 91.
Convert 7/16" to a decimal
• A.

.4375

• B.

.414

• C.

.3875

• D.

.707

• 92.
What is the pressure 1/4 the way up from the bottom of a pipe 100' tall filled with water?
• A.

43.30

• B.

32.47

• C.

10.82

• D.

75.00

• 93.
The face to center measurement of any welded angle fitting equals
• A.

• B.

• C.

.625 x Pipe size

• D.

1.5 x Pipe size

• 94.
To determine the set on a 45 deg offset you would multiply the travel by
• A.

1.414

• B.

.707

• C.

.414

• D.

.675

• 95.
To determine the face to center measurement of a long radius 90 degree elbow, multiply the pipe size by:
• A.

1.5

• B.

.675

• C.

2

• D.

1.414

• 96.
• A.

18"

• B.

35 3/8"

• C.

10 1/2”

• D.

22 1/2”

• 97.
When a pipe size is decreased by half, the carrying capacity of the pipe decreases by
• A.

Half

• B.

Quarter

• C.

Third

• D.

One

• 98.
A single line drawing of a piping system represents the
• A.

Top of the pipe

• B.

Bottom of the pipe

• C.

Center of the pipe

• D.

Top of the pipe B. Bottom of the pipe C. Center of the pipe D. Nearest wall of the pipe

• 99.
A Schematic drawing is
• A.

Not to scale

• B.

Does not show locations of equipment

• C.

Shows pipe size and flow

• D.

All of the above

• 100.
What size hole should be cut into a main to saddle in a smaller pipe?
• A.

The same ID as the main

• B.

The same OD as the branch

• C.

The same ID as the branch

• D.

1/8" less than the ID of the branch

• 101.
The pipe size of a pipe changes from the ID to the OD on what size pipe?
• A.

8"

• B.

10"

• C.

12"

• D.

14"

• 102.
What is the best valve for throttling?
• A.

Gate

• B.

Globe

• C.

Butterfly

• D.

Ball

• 103.
When selecting a hanger for a piping system you should consider
• A.

The system temperature

• B.

Thermal and dynamic movement of the pipe

• C.

Vibration of the pipe

• D.

All of the above

• 104.
What is the purpose of the expansion joint in a steam system?
• A.

To provide movement caused from a change in temperature

• B.

To dampen the sound of the steam

• C.

To superheat the steam

• D.

To provide for piping misalignment

• 105.
What is the minimum thickness for threading PVC pipe?
• A.

Sch 20

• B.

Sch80

• C.

Sch40

• D.

Sch 160

• 106.
What does the stamp Oxy-Med stand for on copper tubing?
• A.

The tubing is free from germs

• B.

The tubing has been cleaned for use on refrigeration

• C.

The tubing has been cleaned for oxygen service

• D.

The tubing has plugs in the ends

• 107.
What type of flame should be used to cut carbon steel?
• A.

Neutral

• B.

Carbonizing

• C.

Oxidizing

• D.

Hot

• 108.
When should you ream the end of a pipe?
• A.

After cutting

• B.

• C.

Both A and B

• D.

Only when a burr is felt on the inside of the pipe

• 109.
A rating of 150# refers to a flange's
• A.

Size

• B.

Pressure Rating

• C.

Face finish

• D.

Bolt pattern

• 110.
Oil is used on a pipe machine to
• A.

Cool and lubricate the die

• B.

Clean the chips off the pipe

• C.

Prevent the pipe from rusting

• D.

Soften the pipe

• 111.
What is the maximum pressure for an acetylene hose?
• A.

5 PSI

• B.

8 PSI

• C.

15 PSI

• D.

20 PSI

• 112.
When ordering ACR copper specify the size by
• A.

Nominal size

• B.

ID

• C.

OD

• D.

Wall thickness

• 113.
When brazing for medical gas or refrigeration always
• A.

Remove the carbon from the outside of the fitting

• B.

Polish the brazing alloy

• C.

Purge the line when brazing

• D.

Flush the pipe with water after brazing

• 114.
A dielectric fitting should be used on
• A.

Steel to copper joints

• B.

Steel to Steel joints

• C.

Copper to Copper joints

• D.

Before all valves

• 115.
A vertical line in an isometric drawing represents
• A.

Depending on the view point

• B.

North and South

• C.

Up and down

• D.

Left and right

• 116.
To view the west elevation the viewer's perspective is from the
• A.

East of the building

• B.

West of the building

• C.

North of the building

• D.

Above the building

• 117.
How many cubic feet are in a tank that is 24" by 3' -6" by 4' -8"?
• A.

56448

• B.

32.85

• C.

32.66

• D.

3.92

• 118.
What is the take off of a 4" 45 Deg Ell?
• A.

4"

• B.

2"

• C.

2 1/2”

• D.

2 5/8”

• 119.
How do you figure the area of a circle?
• A.

1/2 the diameter times the circumference

• B.

• C.

Diameter times PI

• D.

Circumference times PI

• 120.
How much water is in a tank that is 2' x 3' x 4'?
• A.

576 Gallons

• B.

180 Gallons

• C.

7.47 Gallons

• D.

3.19 Gallons

• 121.
What is the gear ratio for an 8" primary gear and a 24" secondary gear?
• A.

3 to 1

• B.

8 to 24

• C.

24 to 18

• D.

1 to 3

• 122.
How much does a cubic foot of a substance weigh if its density is 8.4?
• A.

62.78

• B.

8.4

• C.

8.33

• D.

69.72

• 123.
What is the pressure at the bottom of a tank that is 10' long 6' wide and 8' deep filled with water?
• A.

29,868

• B.

3.46

• C.

8.33

• D.

7.47

• 124.
What is the specific gravity of water?
• A.

8.33

• B.

7.47

• C.

1

• D.

1.414

• 125.
How much heat is required to raise 1/2 pound of water 1 degree F?
• A.

1 BTU

• B.

2 BTU

• C.

1/2 BTU

• D.

4 BTU

• 126.
The combining of more than one metal is
• A.

Tempering

• B.

Annealing

• C.

Alloying

• D.

Blending

• 127.
The pressure exerted by a liquid at rest is
• A.

Hydrostatic

• B.

Hydraulic

• C.

Hydrodynamic

• D.

Hydrofluoric

• 128.
The letters MSDS stand for
• A.

Manufacturers Safety Data Sheet

• B.

Material Safety Data Sheets

• C.

Manufacturers System Data Sheet

• D.

Material System Data Sheet

• 129.
How often should the atmosphere be tested in a confined space.
• A.

Before entering

• B.

Once per shift

• C.

After work begins

• D.

Continuously

• 130.
An exit from a trench should be no more than
• A.

10' from any worker

• B.

25' from any worker

• C.

15' from any worker

• D.

50' from 2 or more workers

• 131.
To raise the boom of a crane
• A.

Point the thumb up

• B.

Point the thumb down

• C.

Point thumbs out

• D.

Point thumbs in

• 132.
Steam condensate lines should use
• A.

Sch 40 galvanized pipe

• B.

Sch 80 Steel pipe

• C.

Sch 40 galvanized pipe

• D.

Sch 80 PVC

• 133.
Steam condensate lines should be installed on
• A.

Trapeze hangers

• B.

Clevis hangers

• C.

Roller hangers

• D.

Friction clamps

• 134.
What is installed after the isolation valve and before the trap union on a standard trap assembly?
• A.

Pigtail

• B.

Strainer

• C.

Air vent

• D.

Vacuum breaker

• 135.
A rating of 300# refers to a flange's
• A.

Size

• B.

Pressure Rating

• C.

Face finish

• D.

Bolt pattern

• 136.
A mixing valve has ____ inlets and _____outlets.
• A.

2 and 1

• B.

1 and 2

• C.

1 and 1

• D.

3 and 1

• 137.
What instrument is best for measuring vacuum?
• A.

Velometer

• B.

Anemometer

• C.

Manometer

• D.

RTD

• 138.
Why can the flux be omitted in a brazed joint?
• A.

This is not a true statement; flux must always be used.

• B.

• C.

The flux is in the filler material

• D.

The heat eliminates the need for flux

• 139.
What do the first two digits mean in E7018 electrodes?
• A.

The tensile strength of the rod in PSI times 1000

• B.

The welding positions for the rod

• C.

The material that the flux is made from

• D.

The amount of metal in the rod

• 140.
What are the main differences between soldering and brazing?
• A.

None

• B.

Solder joints have to be very clean

• C.

Solder joints have higher working pressures because they are not annealed

• D.

The temperature that the joints are made, the flux, and temperatures of the system

• 141.
What temperature does water boil at sea level
• A.

1000* F

• B.

212* F

• C.

212* C

• D.

98.6*C

• 142.
What is on the low side of the vapor compression cycle?
• A.

The evaporator

• B.

The compressor

• C.

The condenser

• D.

The hot gas line

• 143.
What type of copper is recommended for refrigeration?
• A.

Type K

• B.

Type L

• C.

Type M

• D.

DWV

• 144.
What is the expansion and compression of water vapor in a pump?
• A.

NPSH

• B.

Vortexing

• C.

Cavitation

• D.

Surging

• 145.
Why is it necessary to use flux on a soldered joint?
• A.

To lubricate the joint

• B.

Form a seal in the joint

• C.

To hold the joint together

• D.

To chemically prepare the pieces for soldering

• 146.
Annealing copper
• A.

Softens it

• B.

Hardens it

• C.

Turns it black

• D.

Turns it green

• 147.
What is capillary action?
• A.

A small tube used in refrigeration

• B.

The melting of solder

• C.

The flow of a liquid into a small space

• D.

The wetting or tinning in a soldered joint

• 148.
Which of the following is not a confined space?
• A.

A 5000 Gallon tank

• B.

A Valve vault

• C.

A shaft

• D.

A service tunnel connecting two buildings

• 149.
Before attaching regulators to an oxygen cylinder
• A.

Blow the valves for a moment

• B.

• C.

Do nothing

• D.

• 150.
What should be done first when preparing a copper joint?
• A.

Preheat the joint

• B.

Clean all surfaces

• C.

Apply the flux

• D.

Clean the solder

• 151.
When a fluxed joint is overheated it will not
• A.

Oxidize

• B.

Corrode

• C.

Swell

• D.

Fuse

• 152.
Guides are used near
• A.

Anchors

• B.

Expansion joints

• C.

Roller hangers

• D.

Snubbers

• 153.
What is used to soften PVC and remove the gloss
• A.

Primer

• B.

Glue

• C.

Sand cloth

• D.

Acetone

• 154.
A device that mechanically attaches to the side of a flange on a beam is called
• A.

Fignre 66

• B.

Beam clamp

• C.

Friction Clamp

• D.

Yolk and roll

• 155.
Why is it necessary to use roller hangers?
• A.

To make the installation of the pipe easier

• B.

To allow for thermal movement

• C.

To restrict movement to horizontal

• D.

To keep the hanger from damaging the insulation

• 156.
What type of hanger uses a spring that splits the rod?
• A.

Snubber

• B.

Spring

• C.

Isolation

• D.

• 157.
What type of expansion joint does not utilize mechanical movement?
• A.

Expansion loop

• B.

Ball joint

• C.

Bellows joint

• D.

Packed joint

• 158.
What type of valve should be used to bypass a control valve?
• A.

Gate valve

• B.

Check valve

• C.

Globe valve

• D.

Ball valve

• 159.
To assemble a 4 bolt flange
• A.

Set up opposite bolts fairly tight, then tighten all bolts

• B.

Tighten all bolts firmly in order

• C.

Start all nuts, then tighten the bolts firm in counter clockwise order

• D.

Tighten the top bolt firmly, followed by the side bolts

• 160.
What is the purpose for a weep hole in a saddle pad?
• A.

Pressure release

• B.

Allow moisture to escape

• C.

For inspection

• D.

For Drilling

• 161.
To fabricate a 60 degree elbow from a 90 you would
• A.

Trim a 90 until a protractor reads 60 Degrees

• B.

Stand the 90 on one end and hold protractor blade on 60 degrees, mark and cut.

• C.

Measure 113 of end to center dimension, mark and cut.

• D.

Level the 90 in horizontal position determine inside arc, backside arc and face to center dimensions for 60 degree ell, mark and cut.

• 162.
What is the sum of all of the angles in a triangle?
• A.

45

• B.

90

• C.

180

• D.

360

• 163.
• A.

113.07

• B.

288

• C.

709.5

• D.

37.5

• 164.
One foot of water exerts
• A.

2.31 PSI

• B.

27.5 PSI

• C.

.433 PSI

• D.

.414 PSI

• 165.
Where is a bourdon tube found?
• A.

In a level

• B.

In a Manometer

• C.

In a pressure gauge

• D.

In a flow meter

• 166.
A gallon of water at 60 Degrees Fahrenheit weighs
• A.

8.33

• B.

7.47

• C.

2.31

• D.

62.2

• 167.
Convert -40 degrees Fahrenheit into Celsius
• A.

32

• B.

40

• C.

-40

• D.

0

• 168.
How high must you extend a ladder above the roof or deck?
• A.

30"

• B.

36"

• C.

42"

• D.

48"

• 169.
The proper way to extinguish a fire is to
• A.

Point the extinguisher at the floor around the fire

• B.

Spray the top of the flames with the extinguisher

• C.

Sweep back aud forth across the flames

• D.

Point at the base and sweep the base with the extinguisher

• 170.
The most that a crane should be loaded is:
• A.

80 % of the rated capacity

• B.

90% of the rated capacity

• C.

100% of the rated capacity

• D.

110% of the rated capacity

• 171.
What does the crane signal with the index finger pointed forward in a swirling motion signal?
• A.

Lower the boom

• B.

• C.

None

• D.

Lower the boom B. Raise the load C. None D. Raise the boom

• 172.
• A.

Arrange a wire rope clamp so that the dead end has the saddle

• B.

Arrange a wire rope clamp so that the dead end has the u bolt

• C.

Arrange a wire rope clamp so that the dead end has both saddles and u bolts

• D.

Arrange a wire rope clamp so that the dead end is cut short.

• 173.
What causes water hammer?
• A.

Insufficient condensate drainage

• B.

Incorrect supply pipe size

• C.

Cold spots in the line

• D.

Incorrect valve operation

• 174.
Condensate lines should be pitched
• A.

In the direction of flow

• B.

Opposite the direction of flow

• C.

Level

• D.

Up or down depending on if the return is flooded or not.

• 175.
A condensate receiver is used when
• A.

When it is impractical to pipe the condensate directly to the boiler

• B.

When it is impractical to pipe the condensate directly to the boiler

• C.

When the boiler is high pressure

• D.

When large volumes of condensate are generated

• 176.
Which way should the bevel face on an orifice plate?
• A.

Upstream

• B.

Down Stream

• C.

Either up stream or down stream

• D.

It depends if it is water or steam

• 177.
What is the best gasket to use on a flanged joint on medium pressure steam?
• A.

Garlock

• B.

Spiral Wound

• C.

Neoprene

• D.

Teflon

• 178.
What is the standard pressure range for a pneumatic signal?
• A.

4-20 PSI

• B.

1-5 PSI

• C.

0-10 PSI

• D.

3-15 PSI

• 179.
Which one of the following is typically a final control element?
• A.

Transmitter

• B.

Valve

• C.

Controller

• D.

Sensor

• 180.
Which one of the following measures and takes action?
• A.

Transmitter

• B.

Valve

• C.

Controller

• D.

Sensor

• 181.
What type of sensor is directly in the process stream?
• A.

Immersion

• B.

Insertion

• C.

Bulb

• D.

Averaging

• 182.
The 6G welding position is
• A.

With the weld horizontal

• B.

With the weld vertical

• C.

With the weld flat

• D.

With the weld at a 45 degree angle

• 183.
Soldered joints should never be used on systems above
• A.

150 Degrees

• B.

200 Degrees

• C.

250 Degrees

• D.

300 Degrees

• 184.
When a soldered joint is overheated
• A.

The flux burns and the joint becomes ineffective

• B.

The solder melts easier and fills the joint

• C.

Nothing

• D.

Use a higher temperature solder

• 185.
In a Hydronic heating system, units at the top of the system not heating are likely to be
• A.

Water logged

• B.

Airbound

• C.

Undersized

• D.

Overpressure

• 186.
A fan coil uses __ to distribute heating or cooling to the space
• A.

• B.

Conduction

• C.

Convection

• D.

Forced convection

• 187.
A system in which the refrigerant is in the shell and cools the fluid in the tubes is
• A.

Flooded

• B.

Reciprocating

• C.

Dry expansion

• D.

Centrifugal

• 188.
On a centrifugal pump what is rotated by the motor?
• A.

The volute

• B.

The clutch

• C.

The impeller

• D.

The bearing assembly

• 189.
What causes water to move in a Hydronic system?
• A.

The pump sucks the fluid and pushes it in the system

• B.

The pump creates a differential in pressure that moves the water

• C.

The pump lowers the suction pressure and creates movement

• D.

The pump raises the discharge pressure and creates movement