CDC 3E251 - Volume 2 Exam Questions and Answers Solved Correctly
If you choose to spread materials in layers, you should stop the truck where you want to start the
spread, position the dump control levers, and - Answers Raise the bed enough to break the material free
When properly equipped, a front-end loader can perform tasks associated with each operation task
EXCEPT - Answers Trailer operations
What defect are you looking for when inspecting loader buckets without teeth? - Answers Wear of the
cutting edges and end bits
What function can the front-end loader NOT perform when equipped with a multipurpose bucket? -
Answers Dragline
What front-end loader bucket control is used to raise and lower the bucket? - Answers Lift control lever
Which front-end loader control regulates the transmission speed? - Answers Range control lever
How should you backfill a trench when using a front-end loader with a narrow bucket? - Answers Backfill
the area from an angle
What must you do before performing any maintenance action on a front-end loader? - Answers Turn the
loader off and set the parking brake
What advantage does a compact track loader (CTL) have over a standard front-end loader? - Answers
Can operate in a smaller area
How do you spin a compact track loader (CTL) around within its own body length? - Answers Move the
travel controls in opposite directions
If you release the skid-steer loader travel controls levers, - Answers Equipment will stop moving
You ensure good sweeping action and avoid bystanders or damaging equipment when using the skid-
steer loader with the sweeper attachment by using a broom pattern - Answers Two to three inches wide
How are MOST attachments controlled once the auxiliary hydraulics are activated in the compact track
loader (CTL)? - Answers Toggle switches on the travel controls
What distance in feet is the efficient operating range of a scraper? - Answers 300
What four phases of operation make up the work cycle in any scraper operation? - Answers Loading,
hauling, spreading, and returning
Generally, push-loaded scrapers should be loaded within a MAXIMUM distance of how many feet? -
Answers 100
When operating a scraper, at what speed should you enter the loading area? - Answers Controlled high-
return speed
, When spreading material with scrapers, why should you route the scrapers so their tracks overlap? -
Answers To promote compaction
When spreading materials with a scraper, you should make the fill high on the outside edges to -
Answers Prevent the scraper from sliding over the edge
When using a scraper, you can save valuable time on short-radius turns by using - Answers A figure-eight
cycle
If the haul road on which you are operating a scraper is rough and no grader is available, you should -
Answers Lower the scraper bowl on the return trip to level the road
Why do you allow the crawler-type dozer engine to idle three to five minutes before shutdown? -
Answers Prevent damage to the turbo charger
The attachment of a rear-mounted ripper to a dozer does NOT seriously affect the - Answers
Maneuverability of the dozer
What do you do if you are ripping material and your dozer continually lags or stalls? - Answers Reduce
the number of teeth
You would use the side-by-side dozing method only for hauls of AT LEAST - Answers 50
What dozing method are you performing 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? - Answers Slot
When removing a medium-sized tree with a dozer, what position do you place your dozer blade for
initial contact with the tree? - Answers As high as it will go
What must you do if your dozer CANNOT initially push over a large tree? - Answers Cut the roots with
the blade and push the tree over
How far from the construction stakes do you line up your dozer when building a V-shaped ditch? -
Answers Two feet
You gradually raise the blade at the end of the cut when constructing a stockpile with a dozer to -
Answers Avoid creating an abrupt ridge
What ration is the minimum side slope ratio for berms? - Answers 1:1
What two main elements cause erosion on a berm? - Answers Weather and rodents
How do you usually rate the power of a winch on a dozer? - Answers Maximum pull exerted on its line
Why do you clean the mud out of the tracks of your dozer? - Answers To keep the rollers from
developing flat spots because they are unable to move
If you choose to spread materials in layers, you should stop the truck where you want to start the
spread, position the dump control levers, and - Answers Raise the bed enough to break the material free
When properly equipped, a front-end loader can perform tasks associated with each operation task
EXCEPT - Answers Trailer operations
What defect are you looking for when inspecting loader buckets without teeth? - Answers Wear of the
cutting edges and end bits
What function can the front-end loader NOT perform when equipped with a multipurpose bucket? -
Answers Dragline
What front-end loader bucket control is used to raise and lower the bucket? - Answers Lift control lever
Which front-end loader control regulates the transmission speed? - Answers Range control lever
How should you backfill a trench when using a front-end loader with a narrow bucket? - Answers Backfill
the area from an angle
What must you do before performing any maintenance action on a front-end loader? - Answers Turn the
loader off and set the parking brake
What advantage does a compact track loader (CTL) have over a standard front-end loader? - Answers
Can operate in a smaller area
How do you spin a compact track loader (CTL) around within its own body length? - Answers Move the
travel controls in opposite directions
If you release the skid-steer loader travel controls levers, - Answers Equipment will stop moving
You ensure good sweeping action and avoid bystanders or damaging equipment when using the skid-
steer loader with the sweeper attachment by using a broom pattern - Answers Two to three inches wide
How are MOST attachments controlled once the auxiliary hydraulics are activated in the compact track
loader (CTL)? - Answers Toggle switches on the travel controls
What distance in feet is the efficient operating range of a scraper? - Answers 300
What four phases of operation make up the work cycle in any scraper operation? - Answers Loading,
hauling, spreading, and returning
Generally, push-loaded scrapers should be loaded within a MAXIMUM distance of how many feet? -
Answers 100
When operating a scraper, at what speed should you enter the loading area? - Answers Controlled high-
return speed
, When spreading material with scrapers, why should you route the scrapers so their tracks overlap? -
Answers To promote compaction
When spreading materials with a scraper, you should make the fill high on the outside edges to -
Answers Prevent the scraper from sliding over the edge
When using a scraper, you can save valuable time on short-radius turns by using - Answers A figure-eight
cycle
If the haul road on which you are operating a scraper is rough and no grader is available, you should -
Answers Lower the scraper bowl on the return trip to level the road
Why do you allow the crawler-type dozer engine to idle three to five minutes before shutdown? -
Answers Prevent damage to the turbo charger
The attachment of a rear-mounted ripper to a dozer does NOT seriously affect the - Answers
Maneuverability of the dozer
What do you do if you are ripping material and your dozer continually lags or stalls? - Answers Reduce
the number of teeth
You would use the side-by-side dozing method only for hauls of AT LEAST - Answers 50
What dozing method are you performing 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? - Answers Slot
When removing a medium-sized tree with a dozer, what position do you place your dozer blade for
initial contact with the tree? - Answers As high as it will go
What must you do if your dozer CANNOT initially push over a large tree? - Answers Cut the roots with
the blade and push the tree over
How far from the construction stakes do you line up your dozer when building a V-shaped ditch? -
Answers Two feet
You gradually raise the blade at the end of the cut when constructing a stockpile with a dozer to -
Answers Avoid creating an abrupt ridge
What ration is the minimum side slope ratio for berms? - Answers 1:1
What two main elements cause erosion on a berm? - Answers Weather and rodents
How do you usually rate the power of a winch on a dozer? - Answers Maximum pull exerted on its line
Why do you clean the mud out of the tracks of your dozer? - Answers To keep the rollers from
developing flat spots because they are unable to move
