CM 2113 Test 1 - Chao Wang Questions and
Answers Latest
Question 1
Dozer is good for applications of less than 300ft short haul, and scraper is good for
applications of up to 3,000ft medium haul.
Correct Answer
True
Question 2
An advantage of a crawler dozer as compared with a wheel-type dozer is higher
speed.
Correct Answer
False
Question 3
Which of the following work tasks can be performed by a dozer?
Correct Answer
Spreading, Striping and Backfilling
Question 4
The ________________ is very effective for side-casting material, particularly for
backfilling or making sidehill cuts.
Correct Answer
Angle Blade
Page 1 of 8
, Question 5
__________ is a technique whereby the blade end spillage from the first pass or the
sidewalls from previous cuts are used to hold the material in front of the dozer blade
on subsequent passes.
Correct Answer
Slot dozing
Question 6
Which of the following factors need to be considered when selecting a proper scraper
for your project?
Correct Answer
Scraper configuration, volume of material and job size
Question 7
Articulated trucks consist of two individual frames joined by pin, and can be easily
operated over soft ground.
Correct Answer
True
Question 8
A contractor wants to investigate the production and cost differences of using a 4S
blade on a crawler-type dozer (D4H-4S). The material is dry clay and is to be moved a
distance of 150 ft from the beginning of the cut. The dozing is uphill on a 20% grade.
The operator will have average skill. The site conditions will be dark for visibility. The
material weighs 108 pcf in the bank state. Job efficiency is assumed to be equivalent
to a 50-min hour. What is the operator correction factor?
Correct Answer
.75
Page 2 of 8
Answers Latest
Question 1
Dozer is good for applications of less than 300ft short haul, and scraper is good for
applications of up to 3,000ft medium haul.
Correct Answer
True
Question 2
An advantage of a crawler dozer as compared with a wheel-type dozer is higher
speed.
Correct Answer
False
Question 3
Which of the following work tasks can be performed by a dozer?
Correct Answer
Spreading, Striping and Backfilling
Question 4
The ________________ is very effective for side-casting material, particularly for
backfilling or making sidehill cuts.
Correct Answer
Angle Blade
Page 1 of 8
, Question 5
__________ is a technique whereby the blade end spillage from the first pass or the
sidewalls from previous cuts are used to hold the material in front of the dozer blade
on subsequent passes.
Correct Answer
Slot dozing
Question 6
Which of the following factors need to be considered when selecting a proper scraper
for your project?
Correct Answer
Scraper configuration, volume of material and job size
Question 7
Articulated trucks consist of two individual frames joined by pin, and can be easily
operated over soft ground.
Correct Answer
True
Question 8
A contractor wants to investigate the production and cost differences of using a 4S
blade on a crawler-type dozer (D4H-4S). The material is dry clay and is to be moved a
distance of 150 ft from the beginning of the cut. The dozing is uphill on a 20% grade.
The operator will have average skill. The site conditions will be dark for visibility. The
material weighs 108 pcf in the bank state. Job efficiency is assumed to be equivalent
to a 50-min hour. What is the operator correction factor?
Correct Answer
.75
Page 2 of 8
