NCCCO DIGGER DERRICK OPERATOR EXAM
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF
1. Before starting a digger derrick, the operator should:
A. Turn on the engine and begin work immediately
B. Perform a pre-operation inspection
C. Only check the hydraulic fluid
D. Test the boom under full load
A pre-operation inspection ensures the machine is safe and fully
functional before use.
2. What is the purpose of outriggers on a digger derrick?
A. To lift heavier loads
B. To stabilize the machine during operations
C. To increase digging speed
D. To extend the reach of the boom
Outriggers provide lateral stability, preventing tipping when lifting
or digging.
3. Which personal protective equipment (PPE) is required when
operating a digger derrick?
A. Gloves only
B. Safety glasses only
C. Hard hat, gloves, safety glasses, and steel-toed boots
D. Earplugs only
, Comprehensive PPE protects the operator from falling objects,
hydraulic hazards, and mechanical injuries.
4. What should you do if the boom contact with a power line is
unavoidable?
A. Attempt to move it quickly
B. Stay in the cab and call the utility company
C. Touch the line with a non-conductive tool
D. Step off the machine and move away
Contact with energized lines is extremely dangerous; the operator
should remain in the cab if it is insulated and call for professional
assistance.
5. When setting up the digger derrick, the ground must be:
A. Soft enough to allow settling
B. Firm, level, and capable of supporting the load
C. Sloped slightly for drainage
D. Uneven, to test stability
Firm, level ground is essential to prevent tipping and ensure safe
operation.
6. The maximum rated capacity of the digger derrick:
A. Can be exceeded briefly if necessary
B. Must never be exceeded
C. Applies only to horizontal lifts
D. Only applies when the boom is fully extended
Exceeding rated capacity can cause structural failure or tip-over
hazards.
7. The digger derrick’s digger auger is used primarily for:
A. Lifting personnel
, B. Drilling holes for poles or foundations
C. Pushing soil sideways
D. Supporting the boom
The auger is specifically designed to drill vertical or angled holes
for utility poles and other applications.
8. Hydraulic oil leaks:
A. Are normal and safe to ignore
B. Only occur during lifting operations
C. Should be addressed immediately
D. Only affect performance minimally
Hydraulic leaks can lead to equipment failure or fire hazards and
must be corrected promptly.
9. How often should the operator check the machine’s fluid levels?
A. Monthly
B. Yearly
C. Before each operation
D. Only after heavy lifting
Checking fluid levels before each operation ensures proper
function and safety.
10. If the digger derrick begins to tip while lifting a load, the
operator should:
A. Release the load immediately
B. Stop operation and lower the boom carefully
C. Speed up the lift to compensate
D. Move the machine quickly to balance
Stopping and lowering the boom safely prevents accidents and
further instability.
QUESTIONS AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF
1. Before starting a digger derrick, the operator should:
A. Turn on the engine and begin work immediately
B. Perform a pre-operation inspection
C. Only check the hydraulic fluid
D. Test the boom under full load
A pre-operation inspection ensures the machine is safe and fully
functional before use.
2. What is the purpose of outriggers on a digger derrick?
A. To lift heavier loads
B. To stabilize the machine during operations
C. To increase digging speed
D. To extend the reach of the boom
Outriggers provide lateral stability, preventing tipping when lifting
or digging.
3. Which personal protective equipment (PPE) is required when
operating a digger derrick?
A. Gloves only
B. Safety glasses only
C. Hard hat, gloves, safety glasses, and steel-toed boots
D. Earplugs only
, Comprehensive PPE protects the operator from falling objects,
hydraulic hazards, and mechanical injuries.
4. What should you do if the boom contact with a power line is
unavoidable?
A. Attempt to move it quickly
B. Stay in the cab and call the utility company
C. Touch the line with a non-conductive tool
D. Step off the machine and move away
Contact with energized lines is extremely dangerous; the operator
should remain in the cab if it is insulated and call for professional
assistance.
5. When setting up the digger derrick, the ground must be:
A. Soft enough to allow settling
B. Firm, level, and capable of supporting the load
C. Sloped slightly for drainage
D. Uneven, to test stability
Firm, level ground is essential to prevent tipping and ensure safe
operation.
6. The maximum rated capacity of the digger derrick:
A. Can be exceeded briefly if necessary
B. Must never be exceeded
C. Applies only to horizontal lifts
D. Only applies when the boom is fully extended
Exceeding rated capacity can cause structural failure or tip-over
hazards.
7. The digger derrick’s digger auger is used primarily for:
A. Lifting personnel
, B. Drilling holes for poles or foundations
C. Pushing soil sideways
D. Supporting the boom
The auger is specifically designed to drill vertical or angled holes
for utility poles and other applications.
8. Hydraulic oil leaks:
A. Are normal and safe to ignore
B. Only occur during lifting operations
C. Should be addressed immediately
D. Only affect performance minimally
Hydraulic leaks can lead to equipment failure or fire hazards and
must be corrected promptly.
9. How often should the operator check the machine’s fluid levels?
A. Monthly
B. Yearly
C. Before each operation
D. Only after heavy lifting
Checking fluid levels before each operation ensures proper
function and safety.
10. If the digger derrick begins to tip while lifting a load, the
operator should:
A. Release the load immediately
B. Stop operation and lower the boom carefully
C. Speed up the lift to compensate
D. Move the machine quickly to balance
Stopping and lowering the boom safely prevents accidents and
further instability.
