NCCCO Digger Derrick Pre-Operational
Inspection Practice Exam Fall 2026|
250 Most Tested Questions Collection
& Verified Detailed Answers With
Rationales| Tutor Verified Success
Exam) Graded A+
General Pre-Operational Inspection
1. What is the primary purpose of a pre-operational inspection on a
digger derrick?
A. To increase production speed
B. To identify defects or unsafe conditions before operation
C. To determine the operator's pay rate
D. To eliminate the need for maintenance
Answer: B. To identify defects or unsafe conditions before
operation
Rationale: A pre-operational inspection is intended to detect
conditions that could affect safe operation before the machine is
placed into service.
2. When should a digger derrick generally be inspected?
A. Only after an accident
B. Only once a month
C. Before use as required by applicable rules and procedures
D. Only when the machine makes unusual noises
,Answer: C. Before use as required by applicable rules and
procedures
Rationale: Required inspections must be performed at the
appropriate intervals, including before operation when specified.
3. Who is primarily responsible for performing the operator's pre-
operational inspection?
A. Any pedestrian nearby
B. The operator or another qualified person as required by the
employer's procedures
C. The customer
D. The equipment manufacturer
Answer: B. The operator or another qualified person as required by
the employer's procedures
Rationale: The inspection must be performed by a person who is
competent and authorized to conduct the required inspection.
4. What should an operator do if a critical safety defect is
discovered during the inspection?
A. Operate slowly
B. Ignore it if the machine starts
C. Remove the equipment from service and report the defect
according to procedure
D. Increase the load rating
Answer: C. Remove the equipment from service and report the
defect according to procedure
Rationale: Safety-related defects must be addressed before the
equipment is used.
,5. Which document is especially important when determining
manufacturer-specific inspection requirements?
A. Operator's manual
B. Fuel receipt
C. Delivery ticket
D. Employee handbook
Answer: A. Operator's manual
Rationale: The manufacturer's manual contains machine-specific
inspection, operating, maintenance, and safety requirements.
6. What is a good practice when beginning a walk-around
inspection?
A. Start the engine immediately
B. Establish a systematic inspection route
C. Climb directly onto the boom
D. Begin with the maximum rated load
Answer: B. Establish a systematic inspection route
Rationale: A consistent inspection route reduces the likelihood of
overlooking components.
7. Why should an operator inspect the machine before starting it?
A. Some defects can be identified without operating the machine
B. It makes the engine warmer
C. It increases hydraulic pressure
D. It changes the load chart
Answer: A. Some defects can be identified without operating the
machine
, Rationale: Visual inspection can reveal leaks, structural damage,
missing components, and other hazards before startup.
8. What should be done with inspection findings that require
correction?
A. Hide them from the next operator
B. Document and report them according to established procedures
C. Erase them after the shift
D. Correct the load chart
Answer: B. Document and report them according to established
procedures
Rationale: Proper documentation helps ensure that defects are
tracked and corrected.
9. Which condition should immediately receive attention during a
walk-around inspection?
A. Clean paint
B. A cracked structural component
C. A full fuel tank
D. A clean windshield
Answer: B. A cracked structural component
Rationale: Structural cracking can compromise equipment integrity
and may create a serious safety hazard.
10. Why is a systematic inspection preferable to an informal glance
at the machine?
A. It takes less time regardless of circumstances
B. It reduces the chance of missing important components
Inspection Practice Exam Fall 2026|
250 Most Tested Questions Collection
& Verified Detailed Answers With
Rationales| Tutor Verified Success
Exam) Graded A+
General Pre-Operational Inspection
1. What is the primary purpose of a pre-operational inspection on a
digger derrick?
A. To increase production speed
B. To identify defects or unsafe conditions before operation
C. To determine the operator's pay rate
D. To eliminate the need for maintenance
Answer: B. To identify defects or unsafe conditions before
operation
Rationale: A pre-operational inspection is intended to detect
conditions that could affect safe operation before the machine is
placed into service.
2. When should a digger derrick generally be inspected?
A. Only after an accident
B. Only once a month
C. Before use as required by applicable rules and procedures
D. Only when the machine makes unusual noises
,Answer: C. Before use as required by applicable rules and
procedures
Rationale: Required inspections must be performed at the
appropriate intervals, including before operation when specified.
3. Who is primarily responsible for performing the operator's pre-
operational inspection?
A. Any pedestrian nearby
B. The operator or another qualified person as required by the
employer's procedures
C. The customer
D. The equipment manufacturer
Answer: B. The operator or another qualified person as required by
the employer's procedures
Rationale: The inspection must be performed by a person who is
competent and authorized to conduct the required inspection.
4. What should an operator do if a critical safety defect is
discovered during the inspection?
A. Operate slowly
B. Ignore it if the machine starts
C. Remove the equipment from service and report the defect
according to procedure
D. Increase the load rating
Answer: C. Remove the equipment from service and report the
defect according to procedure
Rationale: Safety-related defects must be addressed before the
equipment is used.
,5. Which document is especially important when determining
manufacturer-specific inspection requirements?
A. Operator's manual
B. Fuel receipt
C. Delivery ticket
D. Employee handbook
Answer: A. Operator's manual
Rationale: The manufacturer's manual contains machine-specific
inspection, operating, maintenance, and safety requirements.
6. What is a good practice when beginning a walk-around
inspection?
A. Start the engine immediately
B. Establish a systematic inspection route
C. Climb directly onto the boom
D. Begin with the maximum rated load
Answer: B. Establish a systematic inspection route
Rationale: A consistent inspection route reduces the likelihood of
overlooking components.
7. Why should an operator inspect the machine before starting it?
A. Some defects can be identified without operating the machine
B. It makes the engine warmer
C. It increases hydraulic pressure
D. It changes the load chart
Answer: A. Some defects can be identified without operating the
machine
, Rationale: Visual inspection can reveal leaks, structural damage,
missing components, and other hazards before startup.
8. What should be done with inspection findings that require
correction?
A. Hide them from the next operator
B. Document and report them according to established procedures
C. Erase them after the shift
D. Correct the load chart
Answer: B. Document and report them according to established
procedures
Rationale: Proper documentation helps ensure that defects are
tracked and corrected.
9. Which condition should immediately receive attention during a
walk-around inspection?
A. Clean paint
B. A cracked structural component
C. A full fuel tank
D. A clean windshield
Answer: B. A cracked structural component
Rationale: Structural cracking can compromise equipment integrity
and may create a serious safety hazard.
10. Why is a systematic inspection preferable to an informal glance
at the machine?
A. It takes less time regardless of circumstances
B. It reduces the chance of missing important components
