Mobile Crane NCCER
Mobile Crane NCCER Study Guide 2025
When determining the "gross load" the best method is: -Correct Answer ✔Get an
accurate load weight and add the rigging
By order of strength which is correct -Correct Answer ✔Basket, Vertical, Choker
Primary purpose for a roster sheave or auxiliary boom point sheave is to: -Correct
Answer ✔Separate the hoist line
When the number of layers of rope on a drum increase the : -Correct Answer
✔Allowable line pull decreases
What is the minimum allowable distance from the crane and power lines under 50kV? -
Correct Answer ✔10'
Eccentric main boom tip reeving casues -Correct Answer ✔twisting of the boom
How many randomly broken wires must there be to remove a running wire rope from
service? -Correct Answer ✔6
When working near power lines when is a signal person required? -Correct Answer
✔When crane moves within a booms length of power lines
When operating truck cranes what is the most unstable allowable quadrant of
operation? -Correct Answer ✔Side
Mobile Crane NCCER
, Mobile Crane NCCER
Tipping capacities of locomotive cranes are based on what % of tipping? -Correct Answer
✔85%
Should the load be applied when determining the proper boom angle? -Correct Answer
✔YES
What type of rope is recommended for a tagline around powerlines -Correct Answer
✔Polypropylene
what does two beeps of the horn indicate to people in the area -Correct Answer
✔forward
Load radius is the distance from the center of gravity of the suspended load to the: -
Correct Answer ✔Center of rotation
What is the purpose of using a boom extension? -Correct Answer ✔Increase height
What do a jib and boom ext. have in common -Correct Answer ✔Increase height
What is the minimum design factor required for a right regular lay main boom or
auxiliary hoist rope?` -Correct Answer ✔3.5
How does the operator determine if the correct load chart is being used? -Correct
Answer ✔Matching serial numbers
If the crane's jib is offset 5 degrees as opposed to an original 15 degrees and the boom
angle remains constant you would expect the load radius to do what? -Correct Answer
✔To be reduced
Mobile Crane NCCER
Mobile Crane NCCER Study Guide 2025
When determining the "gross load" the best method is: -Correct Answer ✔Get an
accurate load weight and add the rigging
By order of strength which is correct -Correct Answer ✔Basket, Vertical, Choker
Primary purpose for a roster sheave or auxiliary boom point sheave is to: -Correct
Answer ✔Separate the hoist line
When the number of layers of rope on a drum increase the : -Correct Answer
✔Allowable line pull decreases
What is the minimum allowable distance from the crane and power lines under 50kV? -
Correct Answer ✔10'
Eccentric main boom tip reeving casues -Correct Answer ✔twisting of the boom
How many randomly broken wires must there be to remove a running wire rope from
service? -Correct Answer ✔6
When working near power lines when is a signal person required? -Correct Answer
✔When crane moves within a booms length of power lines
When operating truck cranes what is the most unstable allowable quadrant of
operation? -Correct Answer ✔Side
Mobile Crane NCCER
, Mobile Crane NCCER
Tipping capacities of locomotive cranes are based on what % of tipping? -Correct Answer
✔85%
Should the load be applied when determining the proper boom angle? -Correct Answer
✔YES
What type of rope is recommended for a tagline around powerlines -Correct Answer
✔Polypropylene
what does two beeps of the horn indicate to people in the area -Correct Answer
✔forward
Load radius is the distance from the center of gravity of the suspended load to the: -
Correct Answer ✔Center of rotation
What is the purpose of using a boom extension? -Correct Answer ✔Increase height
What do a jib and boom ext. have in common -Correct Answer ✔Increase height
What is the minimum design factor required for a right regular lay main boom or
auxiliary hoist rope?` -Correct Answer ✔3.5
How does the operator determine if the correct load chart is being used? -Correct
Answer ✔Matching serial numbers
If the crane's jib is offset 5 degrees as opposed to an original 15 degrees and the boom
angle remains constant you would expect the load radius to do what? -Correct Answer
✔To be reduced
Mobile Crane NCCER
