Pipe Fitter Star

189 Questions | Total Attempts: 1023

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Pipe Fitter Star

Star Practice


Questions and Answers
  • 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. 

      Lower the load

    • C. 

      Raise the load

    • D. 

      Raise the boom

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

      Choked position

    • B. 

      Basket position

    • 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. 

      Down feed radiation

    • 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. 

      Basket

    • D. 

      Casket

  • 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. 

      Threaded Joints

  • 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. 

      High Readings

    • B. 

      Low Readings

    • C. 

      Damage to the plate

    • D. 

      Erratic Readings

  • 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. 

      Condensate Load

    • 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. 

      Hold the Load

    • 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. 

      Tangent 1/2 angle x radius

    • B. 

      Tangent angle x radius

    • 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. 

      After threading

    • 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. 

      Radius squared times PI

    • 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. 

      The flux is already present

    • 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. 

      Clean the threads

    • C. 

      Do nothing

    • D. 

      Adjust the regulator to maximum

  • 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. 

      Adjustable

  • 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. 

      Raise the load

    • C. 

      None

    • D. 

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

  • 172. 
    What does the term never saddle a dead horse mean?
    • 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. 

      Radiation

    • 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