Mobile Crane NCCER Study Guide with Complete Solutions
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Course
Nccer mobile crane
Institution
Nccer Mobile Crane
Mobile Crane NCCER Study Guide with Complete SolutionsMobile Crane NCCER Study Guide with Complete SolutionsMobile Crane NCCER Study Guide with Complete SolutionsMobile Crane NCCER Study Guide with Complete Solutions
When determining the "gross load" the best method is: - ANSWER - Get an accurate ...
Mobile Crane NCCER Study Guide
with Complete Solutions
When determining the "gross load" the best method is: - ANSWER - Get an accurate
load weight and add the rigging
By order of strength which is correct - ANSWER - Basket, Vertical, Choker
Primary purpose for a roster sheave or auxiliary boom point sheave is to: - ANSWER
- Separate the hoist line
When the number of layers of rope on a drum increase the : - ANSWER - Allowable
line pull decreases
What is the minimum allowable distance from the crane and power lines under
50kV? - ANSWER - 10'
Eccentric main boom tip reeving casues - ANSWER - twisting of the boom
How many randomly broken wires must there be to remove a running wire rope
from service? - ANSWER - 6
When working near power lines when is a signal person required? - ANSWER - When
crane moves within a booms length of power lines
When operating truck cranes what is the most unstable allowable quadrant of
operation? - ANSWER - Side
Tipping capacities of locomotive cranes are based on what % of tipping? - ANSWER -
85%
, Should the load be applied when determining the proper boom angle? - ANSWER -
YES
When making a multiple crane lift it is important for the operator to understand that
- ANSWER - the weight may increase if the other crane lands the load first
Most crane manufacturers reduce the load capacity for duty-cycle operations
because - ANSWER - side loading forces may occur
The proper way to calibrate a boom angle indicator is: - ANSWER - using a level,
raise the boom to horizontal and set the indicator at 0 degrees
What type of rope is recommended for a tagline around powerlines - ANSWER -
Polypropylene
what does two beeps of the horn indicate to people in the area - ANSWER - forward
Load radius is the distance from the center of gravity of the suspended load to the: -
ANSWER - Center of rotation
What is the purpose of using a boom extension? - ANSWER - Increase height
What do a jib and boom ext. have in common - ANSWER - Increase height
What is the minimum design factor required for a right regular lay main boom or
auxiliary hoist rope?` - ANSWER - 3.5
How does the operator determine if the correct load chart is being used? - ANSWER
- Matching serial numbers
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