CDC 3e251 Set B Vol. 2

124 Questions  I  By Johnr21077
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CDC Quizzes & Trivia
This quiz will cover all URE multiple choice questions from Vol. 2 of the B-Set of Pavements and Construction Equipment Operator 5-Level upgrade course. All questions are taken directly from the UREs and the multiple choice options are the same. Correct answers reflect the correct answers from the CDC themselves and not necessarily the correct answers from the CERTest.

  
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Questions and Answers

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  • 1. 
    When properly equipped, a front end loader can perform tasks associated with all of the following operations except...
    • A. 

      Dozer tasks

    • B. 

      Scraper jobs

    • C. 

      Trailer operations

    • D. 

      Clamshell operations


  • 2. 
    What must you do before performing any maintenance action on a front end loader?
    • A. 

      Put the transmission in nuetral

    • B. 

      Remove all fuel from the fuel system

    • C. 

      Disconnect and cap the hydraulic system

    • D. 

      Turn the loader off and set the parking brake


  • 3. 
    When equipped with a multi-purpose bucket, what function can the front end loader NOT perform?
    • A. 

      Dozer

    • B. 

      Scraper

    • C. 

      Dragline

    • D. 

      Clamshell


  • 4. 
    What bucket control is used to raise and lower the bucket on a front end loader?
    • A. 

      Lift control

    • B. 

      Clam control

    • C. 

      Bucket control

    • D. 

      Transmission control


  • 5. 
    To pick up materials from a stockpile with a front end loader, which method should you use?
    • A. 

      Scoop

    • B. 

      Dozer

    • C. 

      Dragline

    • D. 

      Clamshell


  • 6. 
    When loading a dump truck with a front end loader, how can you prevent damaging the sump body of the truck?
    • A. 

      Keep the travel stance short

    • B. 

      Spot the truck to the stockpile

    • C. 

      Dump the first load a little at a time

    • D. 

      Have a spotter positioned on the truck


  • 7. 
    What type of front end loader bucket should you use when scooping sticky material that has a tendency to stick to the bucket?
    • A. 

      Drag

    • B. 

      Scoop

    • C. 

      Hopper

    • D. 

      Clamshell


  • 8. 
    How should a dump truck be positioned near the stockpile?
    • A. 

      At a left angle to the pile

    • B. 

      At a right angle to the pile

    • C. 

      Centered on the pile

    • D. 

      Behind the pile


  • 9. 
    How should you backfill a trench when using a front end loader with a narrow bucket?
    • A. 

      Move the loader straight into the material

    • B. 

      Raise the bucket about two inches off the ground

    • C. 

      Move the loader rapidly into the material

    • D. 

      Backfill the area from an angle


  • 10. 
    On a front end loader, in what position would you place the lift-control lever to backdrag the area?
    • A. 

      Float

    • B. 

      Neutral

    • C. 

      Reverse

    • D. 

      Forward


  • 11. 
    When stockpiliing with a front end loader, what happens when the material is worked too much?
    • A. 

      Segregation takes place

    • B. 

      Larger particles break up

    • C. 

      Excessive tire wear occurs

    • D. 

      The stockpile becomes flat


  • 12. 
    Unlike a regular front end loader, what is the advantage of a skid steer loader?
    • A. 

      It does not need to be hauled to the jobsite

    • B. 

      Machine controls react quicker

    • C. 

      It can operate in a smaller area

    • D. 

      It consumes less fuel


  • 13. 
    Where should you look to determine the type of fluid (hydraulic, oil, etc) required on a front end loader?
    • A. 

      AF Form 1800

    • B. 

      Glove compartment

    • C. 

      Technical Order (TO) or owner's manual

    • D. 

      Passenger side door panel


  • 14. 
    On the skid steer loader, what will happen if you remove your hands and feet from the controls?
    • A. 

      The engine die

    • B. 

      The equipment will stop moving

    • C. 

      The engine will return to an idle speed

    • D. 

      The equipment will automatically resume and forward momentum


  • 15. 
    To ensure a good sweeping pattern and avoid damage to equipment or bystanders, you should have a broom pattern that is only...
    • A. 

      2-3 feet wide

    • B. 

      2-3 yards wide

    • C. 

      3-4 inches wide

    • D. 

      2-3 inches wide


  • 16. 
    When moving pallets with a forklift, why should you make sure the forksd are spaced far enough apart?
    • A. 

      To ensure load stability

    • B. 

      To maximixe the lifting capacity

    • C. 

      To decrease the weight of the load

    • D. 

      To increase your visibility of the forks


  • 17. 
    When operating a forklift, what do you do after you have the forks under the pallet?
    • A. 

      Accelerate quickly and push forward on the lift control lever

    • B. 

      Accelerate quickly and pull back on the lift control lever

    • C. 

      Accelerate slightly and pull back on the lift control lever

    • D. 

      Accelerate slowly and push forward on the lift control lever


  • 18. 
    When operating a front end loader with a forklift attachment, what control is used to adjust the forks forward?
    • A. 

      Clamshell

    • B. 

      Fat

    • C. 

      Hoist

    • D. 

      Tilt


  • 19. 
    What is the efficient operating range of a scraper?
    • A. 

      200 feet

    • B. 

      300 feet

    • C. 

      400 feet

    • D. 

      500 feet


  • 20. 
    What are the four basic cycles in any scraper operation?
    • A. 

      Hauling, spreading, planning, returning

    • B. 

      Spreading, planning, loading, returning

    • C. 

      Loading, hauling, spreading, returning

    • D. 

      Planning, scraping, hauling, returning


  • 21. 
    What is the best reason to perform a downhill pull with a scraper?
    • A. 

      To increase tire life

    • B. 

      To decrease tire spinning

    • C. 

      To decrease gravitational pull

    • D. 

      To add more material per load


  • 22. 
    Which of these loading methods generally achieves maximum productivity?
    • A. 

      Pusher

    • B. 

      Shuttle

    • C. 

      Straddle

    • D. 

      Backtrack


  • 23. 
    Generally, push-loaded scrapers should be loaded within a maximum stance of how many feet?
    • A. 

      50

    • B. 

      75

    • C. 

      100

    • D. 

      150


  • 24. 
    When operating a scraper, at what speed should you enter the loading area?
    • A. 

      Controlled low return speed

    • B. 

      Controlled high return speed

    • C. 

      Same speed as the pusher

    • D. 

      Slower speed than the pusher


  • 25. 
    When the scraper leaves a cut, why should you allow the scraper to travel a few feet before lfiting the bowl to the carrying position?
    • A. 

      To be sure the apron is closed

    • B. 

      To maintain a sense of gravity

    • C. 

      To keep the scraper from bouncing

    • D. 

      To spread loose material piles in front of the bowl


  • 26. 
    Which statement describes the proper procedure to begin loading sand in a scraper?
    • A. 

      Use the forward momentum of the scraper

    • B. 

      Start with the blade in the dirt

    • C. 

      Load of a slight upgrade

    • D. 

      Loosen first with rippers


  • 27. 
    When picking up loose shale with a scraper on level grade, the blade should be positioned to follow...
    • A. 

      Previous cuts

    • B. 

      Spoilage of windrows

    • C. 

      Planes of lamination

    • D. 

      Previously pumped areas


  • 28. 
    When spreading materials with scrapers, why should you route the scrapers so their tracks overlap?
    • A. 

      Maintain pumping

    • B. 

      To promote compaction

    • C. 

      To guarantee faster exit speeds

    • D. 

      Ensure less tearing of the edge


  • 29. 
    When spreading materials with a scraper, why should you make the fill high on the outside edges?
    • A. 

      To assist in proper compaction

    • B. 

      To complete the compaction process

    • C. 

      To have proper drainage in the center of the fill

    • D. 

      To prevent the scraper from sliding over the edge


  • 30. 
    For best results when loading wet or sticky materials, how far should you bring the scraper tailgate forward each time?
    • A. 

      1 foot

    • B. 

      2 feet

    • C. 

      3 feet

    • D. 

      4 feet


  • 31. 
    When using a scraper, what can you do to save valuable time on short radius turns?
    • A. 

      The shuttle method

    • B. 

      Long-radius turns

    • C. 

      A figure-eight cycle

    • D. 

      Circle returns


  • 32. 
    If the haul road on which you are operating the scraper is rough and there is no grader available, you should...
    • A. 

      Travel at a slower return speed

    • B. 

      Travel at a higher return speed

    • C. 

      Lower the scraper bowl on the haul trip to level the road

    • D. 

      Lower the scraper bowl on the return trip to level the road


  • 33. 
    What can you do to eliminate bouncing when traveling with the scraper unit?
    • A. 

      Carry the scraper bowl low to the ground

    • B. 

      Travel along outside edges of the fill

    • C. 

      Use alternate haul roads

    • D. 

      Travel at higher speeds


  • 34. 
    When towing a sheepsfoot roller on a road, you should work the roller in what direction?
    • A. 

      Extreme right to left

    • B. 

      Extreme left to right

    • C. 

      Outside to center

    • D. 

      Center to outside


  • 35. 
    What happens to the 1-2 inches of loose soil left by the sheepsfoot roller?
    • A. 

      It is hauled away

    • B. 

      It is used to absorb moisture

    • C. 

      It acts as a cushion to tehfinal layer

    • D. 

      It assists in bonding successive layers


  • 36. 
    What is the purpose of equipping steel wheel roller with scraper blades?
    • A. 

      Assist in leveling the area

    • B. 

      Break up hardened surface areas

    • C. 

      Keep the drum rolls in proper alignment

    • D. 

      Keep the drum rolls clean and free of debris


  • 37. 
    How can you prevent asphalt from sticking to the drum rolls of a steel-wheel roller?
    • A. 

      By using scraper blades

    • B. 

      By using water from spray bars

    • C. 

      By using chemically treated drum rolls

    • D. 

      By preheating the drum rolls prior to rolling


  • 38. 
    When using the steel wheel roller to roll asphalt, how do you prevent the drive wheel from pushing the asphalt up in front of the drum?
    • A. 

      Drive the roller backwards

    • B. 

      Drive the roller forwards

    • C. 

      Increase the vibrations

    • D. 

      Use plenty of water


  • 39. 
    What can happen if you leave the steel wheel roller standing on a new road surface?
    • A. 

      The heat will warp the drum rolls

    • B. 

      Depressions will be left in the pavement

    • C. 

      Segregation will take place in the asphalt

    • D. 

      Engine oil may leak and deteriorate the asphalt


  • 40. 
    Pneumatic-tired rollers are used when the soil to be compacted requires...
    • A. 

      No vibration

    • B. 

      Less moisture

    • C. 

      Less rolling time

    • D. 

      A kneading action


  • 41. 
    One difference between the self-propelled pnuematic roller, and the 13-wheeled towed rollre is that the self-propelled roller...
    • A. 

      Travels faster

    • B. 

      Has a dozer blade

    • C. 

      Has a watering system

    • D. 

      Can maneuver in smaller areas


  • 42. 
    How can you ensure uniform compaction with the pnuematic tired-roller?
    • A. 

      Maintain even tire pressure

    • B. 

      Overlap each succeeding pass

    • C. 

      Begin rolling on the west side

    • D. 

      Begin rolling on the outside edge of the project


  • 43. 
    What precaution must you take, when using articulated steering, on a grader with the blade positioned at an acute angle?
    • A. 

      Limited blade lift capability

    • B. 

      Limited side shift capability

    • C. 

      Running the blade into the rear tire on turns

    • D. 

      Putting excessive pressure on the lift cylinders


  • 44. 
    What terms do we use to designate a graders moldboard ends?
    • A. 

      Heel and toe

    • B. 

      Cut and spill ends

    • C. 

      Left and right end bits

    • D. 

      Leading and trailing end bits


  • 45. 
    You regulate the depth of your cut with a grader by...
    • A. 

      Leaning the front wheels

    • B. 

      Articulating the grader frame

    • C. 

      Raising or lowering the toe of the moldboard

    • D. 

      Raising or lowering the heel of the moldboard


  • 46. 
    To have the material cut by a grader form a windrow, you must...
    • A. 

      Raise the side draft

    • B. 

      Lowere the side shift

    • C. 

      Raise the heel of the moldboard

    • D. 

      Lower the heel of the moldboard


  • 47. 
    By adjusting the pitch of the grader moldboard, you change the...
    • A. 

      Spillage over the moldboard

    • B. 

      Spread thickness of the material

    • C. 

      Spillage off the heel of the moldboard

    • D. 

      Cutting or dragging action of the cutting edge


  • 48. 
    What type of action occurs when you pitch a grader's scarifier to the rear?
    • A. 

      Planning

    • B. 

      Tearing

    • C. 

      Dragging

    • D. 

      Spreading


  • 49. 
    When removing teeth from a grader's scarifier, which tooth should you take out first?
    • A. 

      Left outside edge

    • B. 

      Right outside edge

    • C. 

      Center of the scarifier

    • D. 

      Side where the cut will be made


  • 50. 
    What happens if you lower the ripper teeth on a grader too much?
    • A. 

      You shear the teeth

    • B. 

      You get a dragging action

    • C. 

      It raises the graders back end

    • D. 

      It causes the grader to go offline


  • 51. 
    After using a scarifier and ripper, what is the next step you perfom with a grader on a road project?
    • A. 

      Build a crown

    • B. 

      Level the surface

    • C. 

      Establish drainage

    • D. 

      Do shoulder pick up


  • 52. 
    The grading operation that spreads material away from the ditching operation and toward the middle of the road we call...
    • A. 

      The shoulder pick up

    • B. 

      The spreading pass

    • C. 

      Crowning

    • D. 

      A ditch cut


  • 53. 
    When cutting the back slope of a ditch with a grader, position the circle and blade to ensure the material flows...
    • A. 

      Inside the right rear tandem tire

    • B. 

      Inside the front right tire

    • C. 

      Outside the right rear tandem tire

    • D. 

      Outside the front right tire


  • 54. 
    How can you avoid leaving an edge when making the final leveling pass with a grader?
    • A. 

      Lower the trailing edge of the blade

    • B. 

      Lower the front edge of the blade

    • C. 

      Lift the trailing edge of the blade

    • D. 

      Raise the front edge of the blade


  • 55. 
    Windrows piled in front of the rear grader tires when leveling affect...
    • A. 

      The grader's power

    • B. 

      The operator's vision

    • C. 

      Traction and accuracy

    • D. 

      Compaction of the material


  • 56. 
    Besides adding to the appearance of a job, what is the benefit of sloping the bank of a ditch?
    • A. 

      Compacts the bank

    • B. 

      Prevents the bank from crumbling

    • C. 

      Prevents the windrows from washing away

    • D. 

      Restricts drainage to the bottom of the ditch


  • 57. 
    Preparing the downward slope from the centerline to the shoulder of the road is...
    • A. 

      The final step in road grading

    • B. 

      Established after the ditch line is cut

    • C. 

      The first established grade on the road

    • D. 

      Done to coincide with the slope of the ditch


  • 58. 
    Before making any grading cuts on a project, what do you examine?
    • A. 

      Hub stakes

    • B. 

      Slope stakes

    • C. 

      Off-set stakes

    • D. 

      Centerline stakes


  • 59. 
    Ideally, we construct road mix pavements during dry weather when the tempuarture is at least...
    • A. 

      20 degrees

    • B. 

      30 degrees

    • C. 

      40 degrees

    • D. 

      50 degrees


  • 60. 
    When mixing bitumen with a grader, turn the material from one side of the road to the other a minimum of...
    • A. 

      Two times

    • B. 

      Three times

    • C. 

      Four times

    • D. 

      Six times


  • 61. 
    Other than on the equipment itself, where can you find lube charts that pertain to a regular piece of equipment?
    • A. 

      Catalogs

    • B. 

      Pamphlets

    • C. 

      Brochures

    • D. 

      Technical Orders (TO)


  • 62. 
    Why should the point of the V tread on the front grader tires meet the ground last?
    • A. 

      To reduce bouncing

    • B. 

      To reduce fuel consumption

    • C. 

      To make the tires last longer

    • D. 

      To aid in sterring when leaning the front wheels


  • 63. 
    Besides the normal up-and-down blade controls, what other control levers may be on some dozers?
    • A. 

      Angle and pitch

    • B. 

      Angle and roll

    • C. 

      Tilt and angle

    • D. 

      Tilt and pitch


  • 64. 
    On the crawler type dozer, why do you allow the engine to idle 3-5 minutes before you shut down?
    • A. 

      Prevent damage to the hydraulic pump

    • B. 

      Prevent damage to the turbo charger

    • C. 

      Increase water pump pressure

    • D. 

      Decrease oil pump cavitation


  • 65. 
    The attachment of a rear-mounted ripper to a dozer does not seriously affect the...
    • A. 

      Dozer's ability to stockpile material

    • B. 

      Maneuverability of the dozer

    • C. 

      Operator's rear vision

    • D. 

      Weight of the dozer


  • 66. 
    What do you do if you are ripping material and your dozer continually lags or stalls?
    • A. 

      Increase the track speed

    • B. 

      Decrease the track sped

    • C. 

      Gradually raise the ripper

    • D. 

      Reduce the number of teeth


  • 67. 
    When pushing material with a dozer, what decreases the response time when using the blade-lift control?
    • A. 

      Hydraulic fluid becomes too hot

    • B. 

      Blade-lift control needs lubrication

    • C. 

      Too much moisture in the soil

    • D. 

      Added weight of material on the dozer blade


  • 68. 
    What can cause a bulldozer to nose up and down, creating an uneven work surface?
    • A. 

      Pushing sand

    • B. 

      Operating too fast

    • C. 

      Operating the dozer on a slope

    • D. 

      Raising and lowering the blade too much


  • 69. 
    Use side-byside-dozing only for hauls of at least...
    • A. 

      50 feet

    • B. 

      75 feet

    • C. 

      100 feet

    • D. 

      150 feet


  • 70. 
    When you use the spillage from the first few passes of a dozer to build windrows that hold the earth in front of the blade, what method of dozing are you using?
    • A. 

      Slot dozing

    • B. 

      Strip dozing

    • C. 

      Angle dozing

    • D. 

      Windrow dozing


  • 71. 
    You are about to remove a medium-sized tree.  For your initial contact with the tree, in what position do you place your dozer blade?
    • A. 

      As high as it will go

    • B. 

      On the surface of the ground

    • C. 

      About one foot above the ground

    • D. 

      Lowered into the ground as far as it takes to cut the roots


  • 72. 
    If your dozer cannot initially push over a large tree, what do you do?
    • A. 

      Get a chain saw and cut the tree down

    • B. 

      Cut the roots with the blade and push the tree over

    • C. 

      Connect a chain between two dozers and pull the tree down

    • D. 

      Back up 30 feet and run into the tree at high speed


  • 73. 
    How do you remove stumps with a dozer?
    • A. 

      Push the stump over with the blade

    • B. 

      Cut the roots of the stump and push it out

    • C. 

      Lower the blade onto the stump and lift out

    • D. 

      Maneuver the dozer around to push the stump from all sides


  • 74. 
    When removing rock with a dozer, if you repeatedly let the corner of the blade dig, what can happen?
    • A. 

      Blade may crack

    • B. 

      Dozer engine will stall

    • C. 

      Hydraulic pump will overheat

    • D. 

      Track will loosen on the side the blade is digging


  • 75. 
    To make a side-hill cut with a dozer, how do you start the cut?
    • A. 

      Straight down the hill

    • B. 

      Parallel with the hill

    • C. 

      Diagonally down the hill

    • D. 

      Working your way up the hill


  • 76. 
    How far from the construction stakes should you line up your dozer when building a V-shaped ditch?
    • A. 

      1 foot

    • B. 

      2 feet

    • C. 

      3 feet

    • D. 

      4 feet


  • 77. 
    At least how many inches of material must be covering a culvert before you can safely cross over it with a dozer?
    • A. 

      4 inches

    • B. 

      12 inches

    • C. 

      18 inches

    • D. 

      24 inches


  • 78. 
    Finishing with a dozer is best done at what speed and capacity?
    • A. 

      Slowest speed with the blade full of material

    • B. 

      Slowest speed with the blade at least half full of material

    • C. 

      Highest speed possible with the blade full of material

    • D. 

      Highest speed possible with the blade at least half full of material


  • 79. 
    When constructing a stockpile with a dozer, why should you gradually raise the blade at the end of the cut?
    • A. 

      To make the cut even

    • B. 

      To allow for drianage

    • C. 

      To avoid creating an abrupt ridge

    • D. 

      To aid the dozer in getting out of a cut


  • 80. 
    What happens if you stockpile aggregate blends of material (coarse and fine particles) in a cone shaped mound?
    • A. 

      Particle separation can occur

    • B. 

      Material will not compact as well

    • C. 

      Materials cannot stockpile as high

    • D. 

      The different materials will become mixed


  • 81. 
    What is the minimum slope ratio for berms?
    • A. 

      1:1

    • B. 

      1:2

    • C. 

      1:3

    • D. 

      1:4


  • 82. 
    What are the two main elements that cause erosion on a berm?
    • A. 

      Snow and ice

    • B. 

      Roots and rocks

    • C. 

      Weather and rodents

    • D. 

      Sunlight and eqipment traffic


  • 83. 
    When using your dozer as a pusher to load a scraper, what happens if you push too hard?
    • A. 

      The scraper will not make a clean cut

    • B. 

      The scraper will leave the cut area too soon

    • C. 

      The scraper can jackknife and cause injury or damage

    • D. 

      Permanent damage can occur to the push block on the dozer balde


  • 84. 
    On a dozer, what type of connection do we use to tow equipment?
    • A. 

      A fifth wheel

    • B. 

      Heavy duty chains

    • C. 

      Tongue and drawbar

    • D. 

      Wire rope and clamps


  • 85. 
     How do you usually rate the power of a winch on a dozer?
    • A. 

      Weight of the dozer

    • B. 

      Displacement of the motor

    • C. 

      Size of the hydraulic pump

    • D. 

      Maximum pull exerted on its line


  • 86. 
    Before using a winch on a dozer that is in a stationary position, you should...
    • A. 

      Oil the wire rope

    • B. 

      Line up the dozer with the pull

    • C. 

      Set the parking brake on the dozer

    • D. 

      Anchor the dozer to another piece of equipment


  • 87. 
    Why do you clean the mud out of the tracks of your dozer?
    • A. 

      To keep the rollers from developing flat spots because they are unable to move

    • B. 

      To keep the rollers from freezing in place

    • C. 

      To find lubrication points

    • D. 

      All of the above


  • 88. 
    Fuel your dozer at the end of the workday in order to...
    • A. 

      Prevent condensation in the fuel tank

    • B. 

      Keep the fuel lines lubricated

    • C. 

      Keep the filters moist

    • D. 

      Prevent vapor lock


  • 89. 
    What happens if you operate your dozer with the tracks too tight?
    • A. 

      Transmission will not shift

    • B. 

      Maneuverability is reduced

    • C. 

      Engine horsepower is reduced

    • D. 

      Flat spots are created on the rollers


  • 90. 
    What is the correct adjustment distance from the bottom of the straightedge to the top of the plate on a dozer track when checking tension?
    • A. 

      1/2 to 1 inch

    • B. 

      3/4 to 1-3/4 inches

    • C. 

      1 to 1-1/2 inches

    • D. 

      1-1/2 to 2-1/2 inches


  • 91. 
    How often do you change the secondary (inner) element of the air cleaner on a dozer?
    • A. 

      Once a year

    • B. 

      When the rubber seals dry out

    • C. 

      When the primary element is changed

    • D. 

      Each time the primary element is washed


  • 92. 
    What is the most important part of changing the cutting edges on a bulldozer?
    • A. 

      Having the proper tools

    • B. 

      Turning the blades in the right direction

    • C. 

      Making sure the cutting edges are blocked

    • D. 

      Ensuring the safety pins are installed in the lifting arms


  • 93. 
    What color do we use to make changes to an as-built drawing?
    • A. 

      Yellow

    • B. 

      Green

    • C. 

      Blue

    • D. 

      Red


  • 94. 
    Which of these jobs would require a thorough inspection, but would not require and AF Form 103, Base Civil Engineer Work Clearance Request?
    • A. 

      Excavating by hand

    • B. 

      Plowing or tilling the soil

    • C. 

      Constructing a V-ditch with a grader

    • D. 

      Using the auger on the back of an industrial tractor


  • 95. 
    What is the purpose of the AF Form 103 before excavating?
    • A. 

      Prevent loss of life

    • B. 

      Prevent disturbance of aircraft

    • C. 

      Prevent unscheduled utility outage

    • D. 

      All of the above


  • 96. 
    When using a trencher, the cuttings can be pulled back away from the ditch by using a...
    • A. 

      Bucket

    • B. 

      Digging chain

    • C. 

      Pair of auger flights

    • D. 

      Front-mounted blade


  • 97. 
    When excavating a ditch, what happens if you move your trencher forward to fast?
    • A. 

      The trencher will stall

    • B. 

      The sides of the ditch will cave in

    • C. 

      The hydraulic pump will overheat

    • D. 

      The chain will slip off the sprocket


  • 98. 
    If you know the location of an obstacle where you are trenching, you should...
    • A. 

      Stay at least a foot away from it

    • B. 

      Place the trencher into a lower gear

    • C. 

      Check the digging permit for the depth of the obstacle

    • D. 

      Raise the digging chain and excavate over the obstacle


  • 99. 
    What limits the digging depth of a backhoe?
    • A. 

      Type of soil

    • B. 

      Horsepower of the engine

    • C. 

      Position of the digging bucket

    • D. 

      Length of the boom and dipper stick


  • 100. 
    On a normal backhoe, from where do the five hydraulic cyclinders that control the swing, boom, dipper stick, and bucket recieve hydraulic pressure?
    • A. 

      Umbilical hydraulic reservoir

    • B. 

      Tractor's pressure regulator

    • C. 

      Secondary Hydraulic system

    • D. 

      Tractor's hydraulic system


  • 101. 
    If you leave the rear tires on the ground when operating a backhoe, what effect can this have?
    • A. 

      Limits the digging depth

    • B. 

      Causes uneven excavating

    • C. 

      Reduces machine stability

    • D. 

      Reduces the power of the machine


  • 102. 
    If the bucket stalls while you are excavating with a backhoe...
    • A. 

      Raise the stabilizers

    • B. 

      Raise the boom slightly

    • C. 

      Increase the engine's rpms

    • D. 

      Change the angle of the bucket


  • 103. 
    If you are operating a backhoe and someone steps in the swing radius of the bucket...
    • A. 

      Slow down the operation

    • B. 

      Keep the person in visual contact

    • C. 

      Notify your supervisor as soon as you can

    • D. 

      Ground the bucket until the person moves out of the area


  • 104. 
    Which is not a safety fctor you must consider when loading materials with a backhoe?
    • A. 

      Ensure the hooks are properly placed

    • B. 

      Do not swing the load too far to one side

    • C. 

      Keep everyone away from the suspended load

    • D. 

      Be sure to have an AF Form 103 in your possesion


  • 105. 
    What makes the rubber-tired excavator a highly mobile piece of equipment?
    • A. 

      The operator's cab rotates 360 degrees

    • B. 

      The transmission has 3 speeds

    • C. 

      It can be loaded onto a trailer quickly

    • D. 

      It operates with self propelled wheel mountings


  • 106. 
    How do you disengage the blade/swing interlock switch on an excavator?
    • A. 

      Lower the blade

    • B. 

      Release the brake

    • C. 

      Place the blade-control lever in float

    • D. 

      Place the excavator propel speed switch in position 1


  • 107. 
    How do you activate the impactor on an excavator?
    • A. 

      Depress the attachment control pedal

    • B. 

      Pull back on the auxiliary controol lever

    • C. 

      Push forward on the auxiliary control lever

    • D. 

      Depress the button on the lift control lever


  • 108. 
    An advantage of using the compactor attachment on an excavator is that it...
    • A. 

      Takes less time to compact the area

    • B. 

      Does not affect the surrounding area

    • C. 

      Breaks up larger particles in the aggregate

    • D. 

      Helps seal the surface against the evaporation of internal moisture


  • 109. 
    While excavating a ditch, which construction stakes should not be disturbed?
    • A. 

      Slope stakes

    • B. 

      Off-set stakes

    • C. 

      Blue top stakes

    • D. 

      Centerline stakes


  • 110. 
    What does a hub-stake indicate on an excavation site?
    • A. 

      Exact position or elevation

    • B. 

      Starting point of the project

    • C. 

      Outsside the boundaries of the project

    • D. 

      Where the windrow should be placed


  • 111. 
    When making a rectangular-shaped excavation, why is it important to plan the digging sequence?
    • A. 

      To ensure that the excavation will be the correct size and depth

    • B. 

      So that the next shift can continue to work without interruption

    • C. 

      So the spoil can be tucked away as it is removed from the excavation

    • D. 

      To prevent working into positions where the machine cannot be repositioned


  • 112. 
    When doing an excavation, where do you lose most of your digging time?
    • A. 

      Excavating basements

    • B. 

      Refueling the machine

    • C. 

      Reading the Off-set stakes

    • D. 

      Repositioning the machine


  • 113. 
    When digging a basement, if the first cut is made on the west line of the project, the starting point should be where the boom and dipper stick reach the...
    • A. 

      Southwest corner

    • B. 

      Northwest corner

    • C. 

      Southeast corner

    • D. 

      Northeast corner


  • 114. 
    What safety precaution prevents cave-ins during excavation?
    • A. 

      Shoring on the sides of the excavation

    • B. 

      Have an AF Form 103 attached to the work order

    • C. 

      Put the material into dump trucks and haul away

    • D. 

      Operate the machine at lower rpm in unstable soil


  • 115. 
    The best way to drain the water out of a trench is to use a...
    • A. 

      Pail

    • B. 

      Pump

    • C. 

      Vacuum

    • D. 

      Sump hole


  • 116. 
    In a diaphragm pump, what type of forces moves liquid from the intake to the discharge valve?
    • A. 

      Rotary motion

    • B. 

      Centrifugal motion

    • C. 

      Reciprocating motion

    • D. 

      Rocking motion of impeller


  • 117. 
    The mud hog and water hog are considered what type of pump?
    • A. 

      Centrifugal

    • B. 

      Diaphragm

    • C. 

      Rotary

    • D. 

      Gear


  • 118. 
    The most convenient way to mount equipment on an industrial tractor is with a...
    • A. 

      Pintle hook

    • B. 

      Three-point hitch

    • C. 

      Floating drawbar

    • D. 

      Swinging drawbar


  • 119. 
    Which statement describes a floating drawbar?
    • A. 

      An independent hitch operated by draft control

    • B. 

      A separate attachment permanently affixed to the tractor

    • C. 

      A crossbar fastened to the upper arms of a three point hitch

    • D. 

      A crossbar fastened to the lower arms of a three point hitch


  • 120. 
    On an industrial tractor outfitted with a Power Take-off, when if ever, should the PTO NOT be engaged?
    • A. 

      If the hydraulic pressure drops below safe limits

    • B. 

      When maintenance personnel are working on the tractor

    • C. 

      When no PTO-driven equipment is mounted to the tractor

    • D. 

      The PTO is always engaged when the tractor is operating


  • 121. 
    What is the approximate diameter of an auger that we use to dig postholes?
    • A. 

      3 inches

    • B. 

      6 inches

    • C. 

      9 inches

    • D. 

      12 inches


  • 122. 
    A front edn load bucket attached to a an industrial tractor is best used for...
    • A. 

      Forming windrows

    • B. 

      Stockpiling material

    • C. 

      Lifitng heavy material

    • D. 

      Excavating light material


  • 123. 
    What are two types of certification required by DoD/AF to operate on a flightline?
    • A. 

      Initial and annual

    • B. 

      Annual and periodic

    • C. 

      Initial and periodic

    • D. 

      Annual and semi-annual


  • 124. 
    What AF Form do we use to document annual certification training?`
    • A. 

      55

    • B. 

      797

    • C. 

      1098

    • D. 

      1806


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