Mobile Cranes Exam Questions With
Complete Solutions
A crane that "goes Light" is not yet overloaded ,
and can be safely returned to normal by rapid load
lowering Correct Answers false
A rough terrain crane is commonly referred to as;
Correct Answers cherry picker
All wire rope on a crane(hoist lines, boom hoist
lines, pendant lines) have a standdardizied design
safety factor of; Correct Answers will vary
depending on the crane and application
An outrigger float should be approximately how
much larger that the outrigger pad? Correct
Answers 3 times
Boom angle is the measured angle
between______and the cnterline of the boom?
Correct Answers horizontal
Crane stability is based of Correct Answers lever
principle
Direction of the boom and pendant stretch will
increase/ Correct Answers load radius
, From the previous question, what chart radius
value would be used to calculate capacity? Correct
Answers 80 Ft
How much out of level, in inches, is a crane with a
48in rotation ring that is 1% off level? Correct
Answers almost 1.5 inches
If the boom swing lever is pushed forward, the
boom will; Correct Answers could be either,
depending on boom and control position
If the measured radius between crane rotation
point and load center is 57 ft , and the load chart
only shows values at 55 ft and 60 ft, which value
would be used? Correct Answers 60ft
Jib forestay and backstay pendant lines should be;
Correct Answers of equal length or the backstay
pendant lines should be longer
On load charts with the upper and the lower
numbers divided, the upper numbers are in the
range that mean the crane will do what if it is
overloaded? Correct Answers structurally fail
Specific details on calculating the weight of a crane
components to set up for a safe lift are found in
Correct Answers load chart data
Complete Solutions
A crane that "goes Light" is not yet overloaded ,
and can be safely returned to normal by rapid load
lowering Correct Answers false
A rough terrain crane is commonly referred to as;
Correct Answers cherry picker
All wire rope on a crane(hoist lines, boom hoist
lines, pendant lines) have a standdardizied design
safety factor of; Correct Answers will vary
depending on the crane and application
An outrigger float should be approximately how
much larger that the outrigger pad? Correct
Answers 3 times
Boom angle is the measured angle
between______and the cnterline of the boom?
Correct Answers horizontal
Crane stability is based of Correct Answers lever
principle
Direction of the boom and pendant stretch will
increase/ Correct Answers load radius
, From the previous question, what chart radius
value would be used to calculate capacity? Correct
Answers 80 Ft
How much out of level, in inches, is a crane with a
48in rotation ring that is 1% off level? Correct
Answers almost 1.5 inches
If the boom swing lever is pushed forward, the
boom will; Correct Answers could be either,
depending on boom and control position
If the measured radius between crane rotation
point and load center is 57 ft , and the load chart
only shows values at 55 ft and 60 ft, which value
would be used? Correct Answers 60ft
Jib forestay and backstay pendant lines should be;
Correct Answers of equal length or the backstay
pendant lines should be longer
On load charts with the upper and the lower
numbers divided, the upper numbers are in the
range that mean the crane will do what if it is
overloaded? Correct Answers structurally fail
Specific details on calculating the weight of a crane
components to set up for a safe lift are found in
Correct Answers load chart data
