©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
Mobile Cranes Exam Questions And
Answers 2025 Update.
T or F
As crane signaling is only a basic function and the signal person knows where the loads will be
positioned, training or testing of the signal person should not be required - Answer✔False
When using hand signals to direct a crane operator, an extended arm with the thumb vertical
and the fingers opening and closing into a fist indicates: - Answer✔raise boom and lower the
load
Two closed fists with both thumbs pointing toward each other is the signal for: -
Answer✔retract hydraulic boom
Which of the following is not a permitted use of an "operational aid"? - Answer✔used to test
weigh a load prior to hoisting
T or F
Any crane component can be used on any other crane made by the same company -
Answer✔false
A rough terrain crane is commonly referred to as; - Answer✔cherry picker
Which of these conditions could be dangerous when operating a crane around a newly
constructed building? - Answer✔uncompacted soil
When hoisting on outriggers with a permitted 360 degree swing, which position is the most
hazardous in most conditions? - Answer✔over corner
T or F
The ground pressure under the outriggers is higher than it is under a crawler track because of
the smaller bearing surface - Answer✔True
An outrigger float should be approximately how much larger that the outrigger pad? -
Answer✔3 times
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
When setting a a crawler crane for use on a new site, which of the following is not required
prior to use? - Answer✔name of the person that will operate the crane
Where should the slings be attached when lifting lattice boom sections? - Answer✔use the end
connections
T or F
During crane assembly, the counterweight is mounted after the installation of the complete
boom - Answer✔false
When assembling lattice boom sections, which set of pins are installed first? - Answer✔both
upper
When installing the boom pins, the pin should be pointing; - Answer✔out away from boom
center
When dismantling a lattice boom, which boom pins should be removed first? - Answer✔both
lower
T or F
It is safe to climb under a boom to knock out the boom pins if the crane has tension on the
pendant lines - Answer✔false
What important step must be followed when welding a damaged crane boom? -
Answer✔follow manufactures welding procedure,have a welder certified to the correct welding
procedure, use correct welding rods and heat treatment
All of above
What position should the gantry of a crane be in when lifting a load? - Answer✔highest position
Jib forestay and backstay pendant lines should be; - Answer✔of equal length or the backstay
pendant lines should be longer
t or F
Jib capactiy "increases" as the angle to ground decreases. - Answer✔False
T or F
On most cranes the jib hoist and boom hoist can be safely operated simultaneously -
Answer✔false
Which of the following is an auxillary boom, or extension of the main boom? - Answer✔jib
All wire rope on a crane(hoist lines, boom hoist lines, pendant lines) have a standdardizied
design safety factor of; - Answer✔will vary depending on the crane and application
To avoid torosional loading, the boom tip sheaves should be reeved: - Answer✔symmetrical
2
Mobile Cranes Exam Questions And
Answers 2025 Update.
T or F
As crane signaling is only a basic function and the signal person knows where the loads will be
positioned, training or testing of the signal person should not be required - Answer✔False
When using hand signals to direct a crane operator, an extended arm with the thumb vertical
and the fingers opening and closing into a fist indicates: - Answer✔raise boom and lower the
load
Two closed fists with both thumbs pointing toward each other is the signal for: -
Answer✔retract hydraulic boom
Which of the following is not a permitted use of an "operational aid"? - Answer✔used to test
weigh a load prior to hoisting
T or F
Any crane component can be used on any other crane made by the same company -
Answer✔false
A rough terrain crane is commonly referred to as; - Answer✔cherry picker
Which of these conditions could be dangerous when operating a crane around a newly
constructed building? - Answer✔uncompacted soil
When hoisting on outriggers with a permitted 360 degree swing, which position is the most
hazardous in most conditions? - Answer✔over corner
T or F
The ground pressure under the outriggers is higher than it is under a crawler track because of
the smaller bearing surface - Answer✔True
An outrigger float should be approximately how much larger that the outrigger pad? -
Answer✔3 times
1
, ©THESTAR 2024/2025 ALL RIGHTS RESERVED 12:54PM.
When setting a a crawler crane for use on a new site, which of the following is not required
prior to use? - Answer✔name of the person that will operate the crane
Where should the slings be attached when lifting lattice boom sections? - Answer✔use the end
connections
T or F
During crane assembly, the counterweight is mounted after the installation of the complete
boom - Answer✔false
When assembling lattice boom sections, which set of pins are installed first? - Answer✔both
upper
When installing the boom pins, the pin should be pointing; - Answer✔out away from boom
center
When dismantling a lattice boom, which boom pins should be removed first? - Answer✔both
lower
T or F
It is safe to climb under a boom to knock out the boom pins if the crane has tension on the
pendant lines - Answer✔false
What important step must be followed when welding a damaged crane boom? -
Answer✔follow manufactures welding procedure,have a welder certified to the correct welding
procedure, use correct welding rods and heat treatment
All of above
What position should the gantry of a crane be in when lifting a load? - Answer✔highest position
Jib forestay and backstay pendant lines should be; - Answer✔of equal length or the backstay
pendant lines should be longer
t or F
Jib capactiy "increases" as the angle to ground decreases. - Answer✔False
T or F
On most cranes the jib hoist and boom hoist can be safely operated simultaneously -
Answer✔false
Which of the following is an auxillary boom, or extension of the main boom? - Answer✔jib
All wire rope on a crane(hoist lines, boom hoist lines, pendant lines) have a standdardizied
design safety factor of; - Answer✔will vary depending on the crane and application
To avoid torosional loading, the boom tip sheaves should be reeved: - Answer✔symmetrical
2
