Mobile Crane Exam Prep (2023/ 2024 Update) Questions
and Verified Answers| 100% Correct
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
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
T or F
When determining whether a crane is level, percentage of grade and degree
measuurement is the same: - ANSWER False
How much out of level, in inches, is a crane with a 48in rotation ring that is 1% off
level? - ANSWER almost 1.5 inches
T or F
and Verified Answers| 100% Correct
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
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
T or F
When determining whether a crane is level, percentage of grade and degree
measuurement is the same: - ANSWER False
How much out of level, in inches, is a crane with a 48in rotation ring that is 1% off
level? - ANSWER almost 1.5 inches
T or F
