Crane operator OA Comprehensive Resource To
Help You Ace 2026-2027 Includes Frequently
Tested Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1) On a long boom mobile cranes, what is the major effect in abruptly stopping
or a rapid swing - Correct Answer: Action may overturn the crane or
collapse the boom
2) On a pick and carry operations, you should - Correct Answer: Keep the
boom as short as possible
3) On a crawler crane, ground bearing pressure is greatest - Correct
Answer: Over the corner
4) Hooks shall be removed from service when the throat opening exceeds
_______ of the original throat opening - Correct Answer: 15%
5) According to B30.5 standard, when working around power lines of more
than 750 KV, how much clearance is required from any part of the crane
and the load - Correct Answer: 45 feet
,6) Lifting from the jib "on rubber" is - Correct Answer: Prohibited by most
manufactures
7) You should determine if a powerline is energized by - Correct Answer:
Asking your supervisor
8) What is the major reason extreme caution must be used when lifting loads
from the water - Correct Answer: The load on a crane may increase as
the object leave the water due to the loss of buoyancy, water held inside
the object, and surface tension(suction)
9) What is the major hazard of extending the boom on a hydraulic crane
without hoisting down - Correct Answer: Two blocking
10) There are three major items necessary to know in order to establish
the safe working load limit of a crane. Any two of these three items can be
used to compute the third. One is a boom length. Another is radius of the
load. The third is - Correct Answer: Boom angle
11) How often should all running ropes in service be visually inspected -
Correct Answer: Once each working day
12) Unless the manufacture state otherwise, Truck cranes generally have
no lifting capacity over which area - Correct Answer: The front
,13) "Working radius" is defined as the distance from the - Correct
Answer: Center of rotation of the crane to the center of gravity of the load
14) Rough terrain Crane capacities are generally greater over the -
Correct Answer: Front
15) What action does a single person attend the operator to inform if he
extends his arm and shoulder height, makes a fist with his hand, and sticks
his thumb down - Correct Answer: Boom down
16) The load line of a crane you were operating comes into contact with
the energize powerline. There is no sign of any other danger, such as fire. In
such situation you should - Correct Answer: Stay in the cab until lines
are de energized
17) When a heavy load is lifted off the ground it will tend to - Correct
Answer: Swing out away from the Crane
18) Which is most common cause of death to Crane operators -
Correct Answer: Crane turnovers
19) And operator should respond to a stop sign from - Correct
Answer: Anyone
20) Truck crane capacities are generally greater over though - Correct
Answer: Rear
, 21) Boom length is measured from the - Correct Answer: The center
of the boom hinge pins to the center of the boom tip sheave
22) Using the preferred method of installing wire rope from a real onto a
hoist drum, the rope runs from the - Correct Answer: Top of the real to
the top of the drum
23) According to B30.5 crack in the windshield of a crane crab is OK as
long as - Correct Answer: It causes no visible distortion that would
interfere with safe operation
24) When lifting personnel, the total weight of the loaded personal
platform must not exceed what percentage of the rated capacity of the
crane - Correct Answer: 50%
25) Sideloading of the crane boom is permitted - Correct Answer:
Only with freely suspended though
26) If the operator makes two audible signals when moving a crane,
he/she intends to - Correct Answer: Go ahead
27) If a cranes load movement indicator (LMI) malfunctions, the operator
should - Correct Answer: Cease crane operations and report the
condition to the supervisor
Help You Ace 2026-2027 Includes Frequently
Tested Questions With ELABORATED 100% Correct
COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!!
Current Update!!
1) On a long boom mobile cranes, what is the major effect in abruptly stopping
or a rapid swing - Correct Answer: Action may overturn the crane or
collapse the boom
2) On a pick and carry operations, you should - Correct Answer: Keep the
boom as short as possible
3) On a crawler crane, ground bearing pressure is greatest - Correct
Answer: Over the corner
4) Hooks shall be removed from service when the throat opening exceeds
_______ of the original throat opening - Correct Answer: 15%
5) According to B30.5 standard, when working around power lines of more
than 750 KV, how much clearance is required from any part of the crane
and the load - Correct Answer: 45 feet
,6) Lifting from the jib "on rubber" is - Correct Answer: Prohibited by most
manufactures
7) You should determine if a powerline is energized by - Correct Answer:
Asking your supervisor
8) What is the major reason extreme caution must be used when lifting loads
from the water - Correct Answer: The load on a crane may increase as
the object leave the water due to the loss of buoyancy, water held inside
the object, and surface tension(suction)
9) What is the major hazard of extending the boom on a hydraulic crane
without hoisting down - Correct Answer: Two blocking
10) There are three major items necessary to know in order to establish
the safe working load limit of a crane. Any two of these three items can be
used to compute the third. One is a boom length. Another is radius of the
load. The third is - Correct Answer: Boom angle
11) How often should all running ropes in service be visually inspected -
Correct Answer: Once each working day
12) Unless the manufacture state otherwise, Truck cranes generally have
no lifting capacity over which area - Correct Answer: The front
,13) "Working radius" is defined as the distance from the - Correct
Answer: Center of rotation of the crane to the center of gravity of the load
14) Rough terrain Crane capacities are generally greater over the -
Correct Answer: Front
15) What action does a single person attend the operator to inform if he
extends his arm and shoulder height, makes a fist with his hand, and sticks
his thumb down - Correct Answer: Boom down
16) The load line of a crane you were operating comes into contact with
the energize powerline. There is no sign of any other danger, such as fire. In
such situation you should - Correct Answer: Stay in the cab until lines
are de energized
17) When a heavy load is lifted off the ground it will tend to - Correct
Answer: Swing out away from the Crane
18) Which is most common cause of death to Crane operators -
Correct Answer: Crane turnovers
19) And operator should respond to a stop sign from - Correct
Answer: Anyone
20) Truck crane capacities are generally greater over though - Correct
Answer: Rear
, 21) Boom length is measured from the - Correct Answer: The center
of the boom hinge pins to the center of the boom tip sheave
22) Using the preferred method of installing wire rope from a real onto a
hoist drum, the rope runs from the - Correct Answer: Top of the real to
the top of the drum
23) According to B30.5 crack in the windshield of a crane crab is OK as
long as - Correct Answer: It causes no visible distortion that would
interfere with safe operation
24) When lifting personnel, the total weight of the loaded personal
platform must not exceed what percentage of the rated capacity of the
crane - Correct Answer: 50%
25) Sideloading of the crane boom is permitted - Correct Answer:
Only with freely suspended though
26) If the operator makes two audible signals when moving a crane,
he/she intends to - Correct Answer: Go ahead
27) If a cranes load movement indicator (LMI) malfunctions, the operator
should - Correct Answer: Cease crane operations and report the
condition to the supervisor
