Rigger Level I Certification practice exam 1
Questions and correct Answers (Verified Answers)
with Rationales 2025
(based on NCCCO and industry standards)
1. What is the primary role of a Rigger Level I?
A. To supervise all crane lifts
B. To perform rigging tasks under the direction of a qualified person
C. To operate mobile cranes
D. To engineer lift plans
Rationale: A Rigger Level I is qualified to perform basic rigging tasks under
supervision, not to operate cranes or supervise lifts.
2. Which of the following is NOT a basic responsibility of a Rigger Level I?
A. Inspect rigging hardware
B. Identify rigging hazards
C. Determine complex center of gravity for off-center loads
D. Select appropriate slings for a routine lift
Rationale: Determining the center of gravity for complex, off-center loads
exceeds the Rigger Level I scope and is for more advanced riggers.
,3. When inspecting a wire rope sling, which of the following is cause for removal
from service?
A. Slight discoloration
B. Ten randomly distributed broken wires in one rope lay
C. A missing tag
D. Light surface rust
Rationale: Ten or more broken wires in one lay is grounds for removal as per
OSHA standards (29 CFR 1910.184).
4. What is the D/d ratio?
A. The difference between diameter and depth
B. The ratio of the diameter of the load to the diameter of the sling
C. The number of drops to diameter
D. Distance between drifts
Rationale: The D/d ratio compares the diameter of the load (D) to the diameter of
the sling (d), affecting sling efficiency.
5. What effect does a sling angle less than 90° have on the sling tension?
A. Reduces it
B. Increases it
C. Has no effect
D. Equalizes tension
, Rationale: As sling angle decreases, tension increases. At 30°, tension can double
compared to a vertical lift.
6. Which type of hitch is best for lifting loose or irregularly shaped loads?
A. Vertical hitch
B. Choker hitch
C. Basket hitch
D. Double basket hitch
Rationale: Choker hitches help secure loose or irregular loads and provide better
grip.
7. A vertical hitch using one sling is rated at 1,000 lbs. What is the capacity if the
same sling is used in a basket hitch?
A. 750 lbs
B. 1,000 lbs
C. 2,000 lbs
D. 1,500 lbs
Rationale: A basket hitch doubles the load capacity of a single vertical hitch,
assuming proper rigging and angles.
8. What information must be included on a sling identification tag?
A. Serial number only
B. Color code
Questions and correct Answers (Verified Answers)
with Rationales 2025
(based on NCCCO and industry standards)
1. What is the primary role of a Rigger Level I?
A. To supervise all crane lifts
B. To perform rigging tasks under the direction of a qualified person
C. To operate mobile cranes
D. To engineer lift plans
Rationale: A Rigger Level I is qualified to perform basic rigging tasks under
supervision, not to operate cranes or supervise lifts.
2. Which of the following is NOT a basic responsibility of a Rigger Level I?
A. Inspect rigging hardware
B. Identify rigging hazards
C. Determine complex center of gravity for off-center loads
D. Select appropriate slings for a routine lift
Rationale: Determining the center of gravity for complex, off-center loads
exceeds the Rigger Level I scope and is for more advanced riggers.
,3. When inspecting a wire rope sling, which of the following is cause for removal
from service?
A. Slight discoloration
B. Ten randomly distributed broken wires in one rope lay
C. A missing tag
D. Light surface rust
Rationale: Ten or more broken wires in one lay is grounds for removal as per
OSHA standards (29 CFR 1910.184).
4. What is the D/d ratio?
A. The difference between diameter and depth
B. The ratio of the diameter of the load to the diameter of the sling
C. The number of drops to diameter
D. Distance between drifts
Rationale: The D/d ratio compares the diameter of the load (D) to the diameter of
the sling (d), affecting sling efficiency.
5. What effect does a sling angle less than 90° have on the sling tension?
A. Reduces it
B. Increases it
C. Has no effect
D. Equalizes tension
, Rationale: As sling angle decreases, tension increases. At 30°, tension can double
compared to a vertical lift.
6. Which type of hitch is best for lifting loose or irregularly shaped loads?
A. Vertical hitch
B. Choker hitch
C. Basket hitch
D. Double basket hitch
Rationale: Choker hitches help secure loose or irregular loads and provide better
grip.
7. A vertical hitch using one sling is rated at 1,000 lbs. What is the capacity if the
same sling is used in a basket hitch?
A. 750 lbs
B. 1,000 lbs
C. 2,000 lbs
D. 1,500 lbs
Rationale: A basket hitch doubles the load capacity of a single vertical hitch,
assuming proper rigging and angles.
8. What information must be included on a sling identification tag?
A. Serial number only
B. Color code
