General crane safety/ 120+ Quizzes & Ans/ . Terms like:
The horizontal distance from the center of rotation of the crane to the center of the hoist line(s) with load applied is called
A) Boom Length
B) Radius
C) Lift Zone
D) Quadrant
E) Circumference - Answer: B) Radius
General crane safety/ 120+ Quizzes & Ans/
2024-2025.
The horizontal distance from the center of rotation of the crane to the center of
the hoist line(s) with load applied is called
A) Boom Length
B) Radius
C) Lift Zone
D) Quadrant
E) Circumference - Answer: B) Radius
What is two-blocking, and why is two-blocking dangerous?
A) Two-blocking occurs when the hook contacts another block or hook on the
crane. It is dangerous because the hook could damage the crane, causing loss of
load control.
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,B) Two-blocking occurs when the block or hook contacts the ground.
It is dangerous because the wire rope may come off of the drum and drop the
block.
C) Two-blocking occurs when the hook block comes in contact with the upper
sheave block during hoisting of the hook. It is dangerous because it could result in
damage to the crane, parting of the hoist lines, and dropping the load. - Answer:
C) Two-blocking occurs when the hook block comes in contact with the upper
sheave block during hoisting of the hook. It is dangerous because it could result in
damage to the crane, parting of the hoist lines, and dropping the load.
When should a tagline be used during lifting operations?
A) when lifting a load over or near electrical transmission lines
B) to prevent the load from swinging or rotating
C) when the supervisor approves their use
D) only when lifting the load to extreme heights - Answer: B) to prevent the load
from swinging or rotating
What is the weight of a 24 square foot, 2 inch thick aluminum plate with a unit
weight of 15 lbs. per square foot of material per inch of thickness?
A) 348 pounds
B) 720 pounds
C) 6,720 pounds
D) 60 pounds
E) 120 pounds - Answer: B) 720 pounds
The minimum crane team for a mobile crane on outriggers would consist of-
A) The Crane Operator, Rigger Supervisor, and Crane Rigger
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,B) The Crane Operator, Crane Supervisor, Rigger Supervisor, and
Crane Rigger
C) The Crane Operator, Crane Supervisor, and Crane Rigger
D) The Crane Operator and Rigger-in-Charge
E) The Crane Operator, Crane Walker, and Crane Rigger - Answer: C) The Crane
Operator, Crane Supervisor, and Crane Rigger
When operating floating cranes, you must start swinging or rotating quickly and
stop smoothly to prevent excessive barge list.
A) True
B) False - Answer: B) False
Extending a telescoping boom without lowering the hoist may result in "two-
blocking" the crane.
A) True
B) False - Answer: A) True
All of the following require a license to operate EXCEPT a(n)-
A) Cab-operated category 3 bridge crane
B) Mobile hydraulic truck crane
C) Non-cab operated category 3 bridge crane
D) Articulating boom category 4 crane
E) Floor-operated category 2 bridge crane - Answer: C) Non-cab operated category
3 bridge crane
Which of the following lift types would NOT be considered a complex lift?
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, A) Multiple-crane lifts
B) Oxygen/Acetylene bottles in racks designed for lifting
O C) Large geometric shapes
D) Loads with multi-level attachment points
E) Hazardous or explosive materials - Answer: B) Oxygen/Acetylene bottles in
racks designed for lifting
What is the minimum amount of rope that shall be on a grooved drum and a
smooth drum?
A) There is no minimum
B) 4 full wraps, 2 full wraps
C) 2 full wraps, 3 full wraps
D) 6 full wraps, 4 full wraps
E) 1 full wrap, 2 full wraps - Answer: B) 4 full wraps, 2 full wraps
The two expiration dates that are of particular importance to crane operators are-
A) Vehicle registration expiration date
B) Hydraulic oil expiration date
C) CAC card expiration date
D) The certification expiration date of the crane
E) The crane operator's license expiration date - Answer: D) The certification
expiration date of the crane
E) The crane operator's license expiration date
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