Mobile Cranes Test Questions | 100% Correct
Answers | Verified | Latest 2024 Version
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 - ✔✔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: - ✔✔raise boom and lower the load
Two closed fists with both thumbs pointing toward each other is the signal for: - ✔✔retract hydraulic
boom
Which of the following is not a permitted use of an "operational aid"? - ✔✔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 - ✔✔false
A rough terrain crane is commonly referred to as; - ✔✔cherry picker
Which of these conditions could be dangerous when operating a crane around a newly constructed
building? - ✔✔uncompacted soil
When hoisting on outriggers with a permitted 360 degree swing, which position is the most hazardous in
most conditions? - ✔✔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 - ✔✔True
An outrigger float should be approximately how much larger that the outrigger pad? - ✔✔3 times
, When setting a a crawler crane for use on a new site, which of the following is not required prior to use?
- ✔✔name of the person that will operate the crane
Where should the slings be attached when lifting lattice boom sections? - ✔✔use the end connections
T or F
During crane assembly, the counterweight is mounted after the installation of the complete boom -
✔✔false
When assembling lattice boom sections, which set of pins are installed first? - ✔✔both upper
When installing the boom pins, the pin should be pointing; - ✔✔out away from boom center
When dismantling a lattice boom, which boom pins should be removed first? - ✔✔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
- ✔✔false
What important step must be followed when welding a damaged crane boom? - ✔✔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? - ✔✔highest position
Jib forestay and backstay pendant lines should be; - ✔✔of equal length or the backstay pendant lines
should be longer
t or F
Jib capactiy "increases" as the angle to ground decreases. - ✔✔False
Answers | Verified | Latest 2024 Version
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 - ✔✔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: - ✔✔raise boom and lower the load
Two closed fists with both thumbs pointing toward each other is the signal for: - ✔✔retract hydraulic
boom
Which of the following is not a permitted use of an "operational aid"? - ✔✔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 - ✔✔false
A rough terrain crane is commonly referred to as; - ✔✔cherry picker
Which of these conditions could be dangerous when operating a crane around a newly constructed
building? - ✔✔uncompacted soil
When hoisting on outriggers with a permitted 360 degree swing, which position is the most hazardous in
most conditions? - ✔✔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 - ✔✔True
An outrigger float should be approximately how much larger that the outrigger pad? - ✔✔3 times
, When setting a a crawler crane for use on a new site, which of the following is not required prior to use?
- ✔✔name of the person that will operate the crane
Where should the slings be attached when lifting lattice boom sections? - ✔✔use the end connections
T or F
During crane assembly, the counterweight is mounted after the installation of the complete boom -
✔✔false
When assembling lattice boom sections, which set of pins are installed first? - ✔✔both upper
When installing the boom pins, the pin should be pointing; - ✔✔out away from boom center
When dismantling a lattice boom, which boom pins should be removed first? - ✔✔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
- ✔✔false
What important step must be followed when welding a damaged crane boom? - ✔✔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? - ✔✔highest position
Jib forestay and backstay pendant lines should be; - ✔✔of equal length or the backstay pendant lines
should be longer
t or F
Jib capactiy "increases" as the angle to ground decreases. - ✔✔False
