100 QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (VERIFIED
ANSWERS)
,The minimum crane team for a mobile crane on outriggers would consist of-
A) The Crane Operator, Rigger Supervisor, and Crane Rigger
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?
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 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.