Exam (elaborations)
Mobile Crane NCCER Study Guide QUESTIONS AND ANSWERS (2024/2025) (VERIFIED ANSWERS)
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Mobile Crane NCCER Study Guide QUESTIONS AND ANSWERS (2024/2025) (VERIFIED ANSWERS)
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Mobile Crane NCCER Study Guide1.When determining the "gross load" the best method is:: Get an accurate
load weight and add the rigging
2.By order of strength which is correct: Basket, Vertical, Choker
3.Primary purpose for a roster sheave or auxiliary boom point sheave
is to:: Separate the hoist line
4.When the number of layers of rope on a drum increase the :: Allowable
line pull decreases
5.What is the minimum allowable distance from the crane and power
lines under 50kV?: 10'
6.Eccentric main boom tip reeving casues: twisting of the boom
7.How many randomly broken wires must there be to remove a running
wire rope from service?: 6
8.When working near power lines when is a signal person required?:
1/
8
, When crane moves within a booms length of power lines
9.When operating truck cranes what is the most unstable allowable
quadrant of operation?: Side
10.Tipping capacities of locomotive cranes are based on what % of tipping?-
: 85%
11.Should the load be applied when determining the proper boom angle?: -
YES
12.What type of rope is recommended for a tagline around powerlines: -
Polypropylene
13.what does two beeps of the horn indicate to people in the area: forward
14.Load radius is the distance from the center of gravity of the
suspended load to the:: Center of rotation
15.What is the purpose of using a boom extension?: Increase height
16.What do a jib and boom ext. have in common: Increase height
17.What is the minimum design factor required for a right regular lay
2/
8
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